Instruction Manual
6" ETX-LS ACF and 6" ETX-LS SC Telescopes
with AutoStar III Hand Controller
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CONTENTS
Introduction
Advanced ETX-LS Features
The most sophisticated and easiest
to use telescope ever . . . . . . . . . . . . . . . . . . . . . . . .3
Two Star Alt Az Alignment. . . . . . . . . . . . . . . . . . . .29
One Star Alt Az Alignment. . . . . . . . . . . . . . . . . . . .30
Finding objects not in the database . . . . . . . . . . . .30
Landmarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Observing Satellites . . . . . . . . . . . . . . . . . . . . . . . .31
Terrestrial Observing. . . . . . . . . . . . . . . . . . . . . . . .32
Getting Started
Assembling the Telescope and using LightSwitch
Assembling the tripod . . . . . . . . . . . . . . . . . . . . . . . .5
Mounting the tripod . . . . . . . . . . . . . . . . . . . . . . . . . .6
Installing the batteries. . . . . . . . . . . . . . . . . . . . . . . .6
Using an AC Adapter or DC Power Cord . . . . . . . . .6
Attaching Accessories. . . . . . . . . . . . . . . . . . . . . . . .7
Telescope is now Fully Assembled . . . . . . . . . . . . . .7
Powering up the Telescope - LightSwitch
Maintenance
Basic Maintenance . . . . . . . . . . . . . . . . . . . . . . . . .33
Collimation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Inspecting the Optics. . . . . . . . . . . . . . . . . . . . . . . .35
Gauging the Movement of the Telescope . . . . . . . .35
Updating Your ETX-LS Firmware . . . . . . . . . . . . . .35
SD Card for Updates and Image Storage. . . . . . . .36
Technology™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
AutoStar III Handbox – Basic Usage
Meade Customer Service
Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Navigating the Menus . . . . . . . . . . . . . . . . . . . . . . . .9
Changing Modes. . . . . . . . . . . . . . . . . . . . . . . . . . .10
Menu Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Scope Info Mode. . . . . . . . . . . . . . . . . . . . . . . . . . .10
Sky Map Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Shortcuts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
How to get in contact. . . . . . . . . . . . . . . . . . . . . . . .36
Appendix A:
Training the Drive . . . . . . . . . . . . . . . . . . . . . . . . . .37
Appendix B:
Creating User Objects. . . . . . . . . . . . . . . . . . . . . . .38
ETX-LS Key Features
Appendix C:
Telescope
Basic Astronomy . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Key Features identified on the Telescope . . . . . . . . 11
Key Features Explained . . . . . . . . . . . . . . . . . . . . .13
Using the Red-Dot Finder . . . . . . . . . . . . . . . . . . . .15
Adjusting the Red-Dot Finder . . . . . . . . . . . . . . . . .15
Specifications
ETX-LS ACF 6”: . . . . . . . . . . . . . . . . . . . . . . . . . . .41
ETX-LS SC 6”: . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Optional MEADE® Accessories
Choosing Eyepieces . . . . . . . . . . . . . . . . . . . . . . . .16
Meade Series 4000 Super Plossl Eyepieces . . . . .16
Meade Series 5000 Premium Eyepieces . . . . . . . .17
Power Supplies. . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Imagers and related Accessories . . . . . . . . . . . . . .18
Meade Warranty
One Year Limited Warranty. . . . . . . . . . . Back Cover
BATTERY SAFETY INSTRUCTIONS:
• Always purchase the correct size and grade of battery:
8 x “C-type” Alkaline batteries (ANSI 14A, 14AC/
IEC LR14).
• Always replace the whole set of batteries at one time,
taking care not to mix old and new ones, or batteries of
different types.
• Clean the battery contacts and also those of the device
prior to battery installation.
• Ensure the batteries are installed correctly with regard to
polarity (+ and -).
AutoStar III Handbox
Buttons, Display and their functions . . . . . . . . . . . .19
Menu Tree. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Guided Tour Menu. . . . . . . . . . . . . . . . . . . . . . . . . .24
Object Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Event Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Take Picture Menu . . . . . . . . . . . . . . . . . . . . . . . . .25
Utilities Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Setup Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
• Remove batteries from equipment which is not to be
used for an extended period of time.
• Remove used batteries promptly.
• Never attempt to recharge primary batteries as this may
cause leakage, fire, or explosion.
® The name “Meade,” “AutoStar”, “LightSwitch” and the Meade
logo are trademarks registered with the U.S. Patent and Trademark
Office and in principal countries throughout the world.
• Never short-circuit batteries as this may lead to high
temperatures, leakage, or explosion.
“SmartFinder”, “Deep Sky Imager”, “ETX-LS”, and “Tonight’s Best”
are trademarks of Meade Instruments Corporation.
• Never heat batteries in order to revive them.
• Remember to switch off devices after use.
• Keep batteries out of the reach of children; small
batteries may be ingested.
• Seek medical advice immediately if a battery has
been swallowed.
Patents:
US 7,277,223, US 7,079,317, US 7,092,156
US 6,304,376, US 7,221,527, US 6,922,283
US 6,392,799
Caution: If batteries or parts are swallowed, see a
doctor immediately.
© 2009 Meade Instruments Corporation.
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INTRODUCTION
The ETX-LS LightSwitch® 6" ACF and ETX-LS LightSwitch® 6" SC Telescope
The most sophisticated and easiest to use telescopes ever
Congratulations on receiving your new ETX-LS 6” telescope. You’ll find that this telescope system has all you
need to explore the Universe we live in. Meade’s concept was to create a telescope that would be simple enough
for anyone to use, yet capable enough for the experienced amateur to stretch their knowledge and skills. With the
most advanced and complete list of features of any telescope, you will have plenty of room to learn and expand
your interest in astronomy and not out grow your telescope. Here are a few of the features that set the Meade
ETX-LS telescope system apart from all others.
Ease of Use: LightSwitch Technology is the ultimate in easy setup. Using a combination of optical, mechanical
and electronic sensors, LightSwitch delivers a telescope ready to start observations without any
input from the user.
Optics:
Your choice of optical systems to meet your needs. Meade’s Schmidt-Cassegrain (SC) optics
give you high performance for the best possible price. Water-white glass, Ultra-High Transmission
Coatings (UHTC) and oversized, thermally-stable Pyrex® primary mirrors provide spectacular
viewing experience not available on comparable competitors’ telescopes. Advanced Coma-Free
takes all of the features of our SC models and then ups the ante. ACF gives a flatter, coma-free
field of view with pinpoint images all the way to the edge of the field, equaling Ritchey-Crétien
performance. ACF is the perfect solution for the serious astroimager or visual astronomer looking
for observatory-class optics.
Mechanics: Strong and stable aluminum castings with large precision worm-gear drives in both axes for smooth
tracking with low periodic error.
Computer: AutoStar III handbox gives you complete control of your ETX-LS system from the palm of your
hand. With a database of nearly 100,000 objects, you will never run out of things to explore.
Multimedia: The Astronomer Inside™ provides audio and video descriptions of the objects you are viewing
with a wealth of information along with guided tours of the best objects in your sky.
Imaging:
The built-in ECLIPS™ CCD Module enables you to take wide-field digital images of the sky, view
them real time with an attached video monitor and save them to an SD card without using and
external computer.
If you are like us, you can’t wait to get outside under a dark sky to try out your new ETX-LS telescope. We have
provided a Getting Started Guide that will get you up and running in the shortest amount of time possible. After
your first experience, please sit down with this manual and read about all the advanced features that are available
to you with this telescope system. We are confident that the ETX-LS will keep you fascinated with the Universe
and entertained for many year
Clear Skies,
The people at Meade
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GETTING STARTED
You may want to perform the ETX-LS assembly indoors in the light so that you become familiar with the parts and
operation before moving the telescope outside into the dark for observing. This Getting Started Guide assumes
you are too impatient to read the entire manual first and want to use your new telescope as quickly as possible.
Just follow the simple steps below and you will be up and running before you know it.
1
It is best to set up the telescope in twilight or before
sunset the first time you use it. Take the telescope and
tripod outside. Set the telescope in a large open area
where you can see lots of sky. Don’t setup right next
to a building or a wall. Also try to stay away from large
metal objects like a car or a metal fence. Make sure the
ground is stable and is approximately level. It is best
to set up the scope away from bright nighttime lighting.
Bright lights will spoil your night vision and impede
your ability to see the sky. Additionally, it will take the
telescope longer to align itself if there are too many
bright lights around.
Lock-Knob
3
Thread in two lock-knobs on each leg (six total)
Assembling the Tripod
near the foot of each tripod leg. Use the lock-knobs
to vary the height of the inner, extendible tripod leg
sections. Tighten the locks to a firm feel only; do
not overtighten.
Spreader Shaft
End Nut
Spreader Bar
2
Remove the field tripod from the shipping carton.
4
Remove the end nut from the spreader shaft
Stand the tripod vertically with the tripod feet down
and with the tripod still fully collapsed. Grasp two of
the tripod legs and, with the full weight of the tripod
on the third leg, gently pull the legs apart to a fully
open position.
and slide the spreader in between the telescope
legs. Attach the end nut and hand tighten until the
telescope legs are held snuggly in the most spread
position. Position the tripod where you want the
telescope to be and check that the top of the tripod is
approximately level.
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Mounting the Telescope
Center Hub
Follow the battery
polarity (orientation)
as indicated by
molded icons
Thumb-Screw
CAUTION: Use care to install batteries as indicated by
thebatterycompartment. Followbatterymanufacturer’s
precautions. Do not install batteries backwards or mix
new and used batteries. Do not mix battery types. If
these precautions are not followed, batteries may
explode, catch fire, or leak. Improperly installed
batteries void your Meade warranty. Always remove
the batteries if they will not be used for a long period
of time.
5
Take the ETX-LS from its packaging and place
the entire telescope onto the top of the tripod head.
Rotate the telescope head slowly until you feel the
scope register on the center hub of the tripod head.
Carefully screw the three attachment thumb-screws
on the bottom of the plate to the base of the tripod.
Hand tighten the screws so the telescope cannot spin
or wobble on the tripod head.
Using an AC Adapter or
DC Power Cord
Installing the Batteries
Power
Port
7
Use only the optional Meade Universal AC Power
6
Remove the end cover from the battery
Adapter (part number 07584 for North America or
07584F for 220v foreign) with your ETX-LS telescope
when connecting toAC power. It is specifically selected
to provide the quality voltage and current required to
power and protect the electronics in the telescope.
Power adapters from other manufactures may cause
damage and void your warranty.
compartment exposing the battery tray. Carefully slide
the battery tray out until it reaches its end stop. Insert
8 (user supplied) Alkaline “C” batteries into the battery
compartment. Take care that the batteries + and - ends
are as indicated in the battery holder.
Slide the battery compartment back into the telescope
and re-attach the battery compartment cover.
Plug the AC plug into a AC household socket
and the DC plug into the 12v DC socket on the
telescope panel.
For external DC power use the optional #607 DC Power
Cord (part number 07043) to connect to an automotive
12v DC accessory socket.
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Attaching Accessories
Your Telescope is now Fully Assembled
Now remove the dust cover from the front
of the telescope tube. Be careful not to touch the
glass lens.
8
Be sure the telescope master power switch is
in the off position. Remove the ETX-LS handbox and
the coiled interface cable from the packing materials.
Plug one end into the HNDBX port of the control panel
and plug the other end into the Handbox port on the
ETX-LS handbox.
Next remove the small dust cap from the ECLIPS
CCD Module and put it in a safe place.
Eyepiece Holder
Rear Cell Thread
Dust Cap
Diagonal Prism
Powering Up The Telescope
9
Remove the dust cap from the rear cell of the
When night has fallen, approximately 1 hour after
telescope. Thread the 1.25" eyepiece holder onto
the rear cell thread. Slide the diagonal prism into
the eyepiece holder and lock in place by turning the
thumbscrew to a firm feel. Place the Super Plössl
26mm eyepiece into the diagonal prism and tighten the
diagonal prism thumbscrew to a firm feel only.
sunset, turn on your telescope. Flip the LightSwitch
on the telescope fork arm to the ON (1) position. The
copyright message lights on ETX-LS’s LCD display.
ꢂ
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Focus Knob
After the telescope powers on, you will hear a brief
introductory message. You can press the “MEDIA” key
to bypass the introduction if you like.
If you have attached a video cable from the Video
Out connection on the telescope to the composite
video input of a TV monitor, you will also see graphics
accompanying the telescope introduction.
Slew Speeds:
Speed 9: Fast
Arrow
Keys
'
'
At this point look through the eyepiece of the
Speed 5: Medium
telescope. You should see some light from the final
alignment star but it is probably out of focus. Adjust the
focus using the knob on the back of the telescope until
you get a sharply focused star image.
'
'
Speed 1: Slow
Number
Keys
Pressthe“Tours/8”keyontheAutoStarandselect
the “Tonight’s Best” tour by pressing the Scroll Down
arrowkeyatthebottomoftheAutoStar.Press“ENTER”
to start the tour of the best objects visible in your sky
right now. You will hear a brief introduction to the tour
and then the first object will be shown on the second line
of theAutoStar display. If you press “ENTER” to select
this object, you will hear a description of the object. If
you press the GoTo key, the telescope will move (slew)
to put the object in the eyepiece so you can view it
directly. To move to the next object, press the “BACK”
key and then the Scroll Down key to move through
the available objects in the tour. Press “ENTER” to
select the displayed object. To exit the tour, press the
“Mode” key.
At the end of this message, the telescope will
immediately start its LightSwitch Automatic Alignment
procedure. It will take about five to ten minutes for
the telescope to orient and align itself. Once it has
completed the alignment the handbox screen will
display “Alignment Successful”.
When you are finished observing for the night,
replace the dust cover over the end of the telescope
and the dust cap on the lens of the ECLIPS Module.
Select “Shutdown” from the main top level menu. After
the telescope has moved to its storage position and
the AutoStar displays “Turn Off Telescope”, flip the
LightSwitch to the OFF (0) position.
ETX-LS TIPS
“MODE” Key
The “MODE” Key cycles the telescope through
its three different modes; Menu Mode, Info Mode
and Skymap Mode.
During any telescope operation, pressing the
“MODE” key will stop the current operation.
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AUTOSTAR III HANDBOX –
BASIC USAGE
Now that you have successfully setup and used your ETX-LS, it’s time for more information about all the capabilities
of this amazing telescope system.
The first step is to familiarize yourself with the AutoStar III handbox operation. The largest keys on the keypad are
the motion control keys. Most of the time, these keys allow you to move, or slew, your telescope both up and down
and right and left. Press them now and see how the telescope moves in response to the keys. When the telescope
initially starts up the scope is set to move at its fastest speed. While this is great for getting close to the area you
want to see, it is really too fast to get anything positioned into the eyepiece. For that reason, the ETX-LS has 9
distinct speeds.
To change the telescope’s speed, press the 1/SPEED
key. You can now select a speed with the scroll up
and down small arrow keys on the bottom of the hand
control. When you have the desired speed selected,
press the “ENTER” key. Alternatively, when the speed
selection screen is showing, you can just press a
number 1-9 to select a speed quickly, where 1 is the
slowest and 9 is the fastest.
Take a moment and try move the scope around at
some different speeds.
Navigating the Menus
Now that you are starting to get comfortable with the
basics, lets learn some new keys. The most important
keys for navigating the menus on you telescope are the
keys along the top and bottom rows of your AutoStar.
The two small arrows on the bottom of the key pad,
allowyoutoscrollthroughthepossiblemenuselections.
The menu line is at the top of the handbox display and
the top of the video monitor if connected. The second
line of the hand control display has the current active
menu item. If you are looking at a connected video
display, you will see more menu choices and the active
selection will be highlighted.
Key Functions
“BACK” -
“ENTER” -
“GO TO” -
“SPEED” -
“FOCUS” -
return to previous menu.
select or confirm entry.
Slew to currently selected object.
Adjust Slew Speed.
Optional Electronic focuser. Motion
pad controls focuser.
Up/Down scrolls focus speed.
Up/Dn adjusts media
volume.
Control Display contrast,
brightness.
Cycles thru Menu -> Scope info ->
SkyMap -> Menu and aborts
current operation.
Toggles media on and off.
Lookup Caldwell Objects
Look up Miessier Objects
“VOL”. -
“DISP” -
“MODE” -
“MEDIA” -
“CALD” -
“MES” -
“PLANETS” - Look up planets in our
solar system
“STAR” -
Look up bright stars
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The “ENTER” and “BACK” buttons on the top of
the display let you move up and down the menu tree.
When you press “ENTER” you will select the current
active menu choice. Pressing “BACK” will move you
up the menu tree. To get us to the top of the menu
tree, press “BACK” until “Select Item” is displayed on
line 1 of the display. This is the top level menu. Use
the scroll keys to navigate through the choices until
you find “Objects”. Press “ENTER”. Now you should
be able to navigate to “Constellations”. Once you are
there press “ENTER” again. Now press “ENTER” to
select “Andromeda”.
Shortcuts!
Now lets look at the numeric keypad. Each of the
number keys does two things. If the telescope is
requesting input, the number keys allow you to enter
digits into the telescope. When you are navigating the
menus they act as shortcuts. Their assignments are
as follows:
1. “SPEED”: We have already used this key. It
allows you to change the slew speed of
the telescope.
2. “CALDWELL”: Let’s you look up members
of a popular group of bright deep sky objects
that make up the Caldwell Catalog.
The telescope will now start to tell you the story of
Andromeda. You can listen to the whole story, or press
the “MEDIA” key to skip the story and more menu
choices will appear. If you want to go from the menu,
“BACK” to the story, just press the “MEDIA” key again
to restart the story.
3. “MESSIER”: Let’s you look up some of the
most famous bright deep sky objects that make
up the Messier Catalog
4. “FOCUS”: If you have the optional electric
focuser on you your telescope you can press
this key to go to focus mode. Now the arrow
keys will move the focus in or out.
A complete tree of the available menu choice is
contained in figure 6 on page 23 of the manual.
CHANGING MODES
Menu Mode
5. “PLANETS”: Lets you directly lookup
a planet.
Up till now we have been exploring the Menu Mode.
The handbox has several other modes in addition to
simple menu navigation. You will notice the “0” key is
also labelled “MODE”. Pressing “MODE” allows you
to cycle through the telescopes three modes.
6. “STARS”: Lets you directly lookup
a
bright stars.
7. “VOLUME”: Gives you quick access to the
telescope audio volume control
8. “TOURS”:Letsyoudirectlyselectaguidedtour.
(note: to exit a tour at any time hit the
“MODE” Key.)
Scope Info Mode
Press “MODE” now. In Scope Info Mode the scroll keys
allow you to look at the current time, date, and location
where the telescope is pointing along with other key
values about the status of your telescope.
Now spend a little quality time with the telescope to
get comfortable navigating its features. When you
a comfortable, it is time to go out and explore the
night sky.
Sky Map Mode
Press “MODE” again. The hand control display will
show “Sky Map FOV=45”. In sky map mode an attached
video monitor shows a planetarium-like map of the sky
in the area where your telescope is pointed. Use the
motion keys to move the scope and notice how the
sky display changes as you move the scope. You can
zoom the display in or out by pressing the scroll up and
scroll down buttons.
10
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ETX-LS KEY FEATURES
5
4
1
8
2
3
2&
1 Diagonal Eyepiece Holder
2 Diagonal Prism
Telescope Input/Output Panel
ON/OFF LightSwitch
3 1.25” Eyepiece Holder
4 Eyepiece Holder Thumb Screw
5 Eyepiece
ECLIPS CCD Module
Red Dot Finder Alignment Screws
8 Single Fork Arm Mount
Handbox Storage Cradle
Figure 1: ETX-LS Telescope
11
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6 Diagonal Thumbscrew
7 Optical Tube Assembly (OTA)
9 Focus Knob
Integrated Sensor Module
Dust Cover
Battery Compartments
Red Dot Finder
Mini SD Card Slot
USB-A for Future Expansion
USB-B connector to PC
Video Output
2!
2@
2#
2$
2%
2^
6
Audio Output
7
9
Electronic Focuser Connector
Handbox (HNDBX) Port
12v Power Input
Figure 2: ETX-LS Right Side
2!
2@
2#
2$
2%
2^
Figure 3: ETX-LS Front
Figure 4: ETX-LS Connectors
12
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1 Diagonal Holder: Holds the eyepiece in place.
Eclips CCD Module: The integrated camera is
part of the system that allows the telescope to
align itself, and provides you with a wide field
imager when a video monitor is attached to
your telescope.
2 Diagonal Prism: provides a more comfortable
right angle viewing position. Slide the diagonal
prism directly into the eyepiece holder (Fig. 1, 3).
3 1.25" Eyepiece Holder
Red Dot Finder: Provides an easy way to sight
on objects and put them in the telescope’s
eyepiece.
4 Eyepiece Holder Thumb Screw
5 Eyepiece: Place the Super Plössl 26mm eyepiece
into the 90° diagonal prism (Fig. 1, 4) and tighten
in place with the thumbscrews. The eyepiece
magnifies the image collected in the optical tube.
Red Dot Finder Alignment Screws: Adjust
these screws to align the Red Dot Finder with
the telescope’s main optics. See page 15 for
more information.
6 Diagonal
EyepieceHolder
Thumbscrew:
Tightens the eyepiece in place. Tighten to a firm
Handbox Storage Cradle: Holds the AutoStar
handbox in a convenient position on the
telescope.
feel only.
7 Optical Tube Assembly (OTA): The main
optical component that gathers the light from
distant objects and brings this light to a focus for
examination through the eyepiece.
Mini SD Card Slot: Allows standard Mini-SD™
cards to be used to store images taken with
the telescope. Can also be used to update the
application firmware in the telescope.
8 Single Fork Arm Mount: Holds the optical tube
in place and moves it to find and track objects.
USB-A Connector for future expansion
9 Focus Knob: Moves the telescope’s primary
mirror in a finely-controlled motion to achieve
precise image focus. The ETX-LS telescope
can be focused on objects from a distance of
about 25 ft. to infinity. Rotate the focus knob
counterclockwise to focus on distant objects, and
clockwise to focus on nearby objects.
USB-B Connector to PC: Connects your
2!
telescope to a PC computer, so that the telescope
can be remotely controlled from AutoStar Suite
software,orothercomputerplanetariumprograms.
This port can also be used to update the software
in your telescope, manage custom catalogs, keep
data on satellites, comets and asteroids current,
and to download new tours to your telescope.
Integrated Sensor Module: Receives location
and time information transmitted from Global
Positioning System (GPS) satellites. Determines
north and level positions.
Video Output: This connector allows you to
2@
connect the telescope to a television monitor (not
supplied). This monitor will display:
a. Multiple line menus.
Telescope Input/Output Panel
Dust Cover: Gently lift out the dust cover from
the front lens of the telescope. The dust cover
should be replaced after each observing session
and the power turned off to the telescope. Verify
that any dew that might have collected during
the observing session has evaporated prior to
replacing the dust cover.
ON/OFF LightSwitch: Turns the ETX-LS system
ON or OFF. The red LED power indicator light
illuminates when power is on.
Battery Compartment: Insert eight ANSI 14A
(IEC LR14) Alkaline “C-Cell” (user-supplied)
batteries in compartment. Be sure batteries
are aligned correctly as shown in the battery
compartment.
13
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b. Images from the ECLIPS camera.
e. Astronomer Inside videos and images of the
moon, planets, and deep sky objects
Audio Output: This connection will allow
2#
you to pass the telescope’s stereo sound to
external speakers, headphones or and external
television monitor.
Electronic Focuser Connector: Plug in the
2$
optional Meade Zero Image Shift Micro-Focuser
(P/N 07080) for precision focusing control.
Handbox (HNDBX) Port: Plug the AutoStar III
2%
coil cord (Page 12, Fig. 4, 23) into this port.
12v Power Connector: Provides connection so
2^
d. Sky maps of the region where your telescope is
that the telescope system may be powered from
either a 12v DC auto cigarette light plug or from a
standard 115v AC home outlet using the optional
Meade Universal Power Adaptor. It is important
that only the Meade Universal Power Adaptor be
used to power the telescope.
pointed
AutoStar Suite Software: Contains the ETX-
2&
LS Instruction Manual and a collection of useful
software including a planetarium program, the
AutoStar Updater for downloading and upgrading
the firmware in the telescope, software to control
the telescope from a computer and other programs
all designed to enhance your use of the ETX-LS
system.
14
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Using the Red-Dot Finder
Adjusting the Red-Dot Finder
On/Off &
Brightness
Adjustment
Because your telescope has so much magnification,
its field of view is very small. This can make it hard to
know exactly where your telescope is pointing by simply
looking at it. To help you point the telescope quickly and
accurately, for terrstrial targets or when not using Auto
Alignment and GO TO pointing, the ETX-LS has a 1X
Red-Dot Viewfinder.
The Red-Dot Finder has been aligned at the factory,
but you may need to touch-up the alignment from time
to time. To do this, look through the eyepiece of your
scope and using the hand controller center a distant
object. Now turn on the Red-Dot Viewfinder and adjust
the brightness so you can see the red dot. Look through
the sight as pictured above.
The Red-Dot Finder will aid you in pointing your
telescope easily. It works much like a fighter pilot’s
heads-up display. To turn on the Red Dot Finder,
carefully rotate the power switch until you feel it click
on. Turning further clockwise will increase the dot
brightness. Adjust the dot to the minimum brightness
where it can be easily seen. This will extend its
battery life and make it easier to see faint stars in the
background. Look through the finder’s glass window.
You will see a red dot superimposed on your view.
Using the direction keys on the handbox, move the
telescope until the red dot is on the target you want to
view in the eyepiece. As you get close to your target,
select a moderately low speed, like speed 5, and move
the scope to center your target as you look through the
eyepiece. This a great way to get used to finding the
movement keys without removing your eye from the
eyepiece..
Adjustment
Screws
Now, without moving the telescope, adjust the indicated
thumb screws until you have put the red dot on the
object at which you were looking. It’s that simple.
Now use the hand controller to put the laser dot on a
new target. Check to see that the desired target is in
the eyepiece.
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OPTIONAL ACCESSORIES
26mm eyepiece, which gives a wide 53 ARC Minute
(just a little less than 1 degree) field of view with 59x
magnification. This is a very good all purpose eyepiece
for your telescope, but you should consider buying
additional eyepieces in longer and shorter focal lengths
to fully realize the potential of the excellent 6" optical
system in your ETX-LS telescope.
Meade makes a complete line of accessories to enable
youtogetthemostfunandperformancefromyourETX-
LS telescope. No matter what you want to accomplish,
we have the equipment to help you get there.
Choosing Eyepieces
A telescope’s eyepiece magnifies the image formed by
the telescope’s main optics. Each eyepiece has a focal
length, expressed in millimeters, or “mm.” The smaller
the focal length, the higher the magnification. For
example, an eyepiece with a focal length of 9mm has
a higher magnification than an eyepiece with a focal
length of 26mm. Experienced users know that higher
powers are, in general, not as useful as lower powers.
Many of the objects in the night sky are relatively large
and faint and look best at low magnifications.
Thepowerormagnificationofatelescopeisdetermined
by the focal length of the telescope and the focal length
of the eyepiece being used. To calculate magnification,
divide the telescope’s focal length by the eyepiece’s
focal length. For example, a 26mm eyepiece is supplied
with the ETX-LS. The focal length of the 6" ETX-LS is
1524mm (see SPECIFICATIONS, page 40).
Telescope Focal Length 1524mm
Eyepiece Focal Length 26mm
1524 ÷ 26 = 58.6x
TheSeries4000SuperPlösslEyepiecesareexcellent
well corrected 4 element optics at popular prices. They
come in a wide range of focal lengths to give you the
right magnification for any type of celestial object you
are viewing. You can also use one of the Series 4000
Barlows to double or triple the magnification of a Super
Plössl eyepiece. These eyepieces have been the
standard for over 30 years.
The magnification is therefore 58.6x.
Low power eyepieces offer a wider field of view, bright,
high-contrast images, and long eye relief. To find an
object with a telescope, always start with a lower power
eyepiece such as the Super Plössl 26mm or longer
focal length. When the object is located and centered
in the eyepiece, you may wish to switch to a higher
power eyepiece to enlarge the image as much as
practical for prevailing seeing conditions or, for many
objects, the view is best with a high quality low-power
wide-field eyepiece.
Series 4000 Super Plössl Eyepieces
Focal
Length
Apparent
Field
Actual
Field
Type
Power
56.0mm
40.0mm
32.0mm
26.0mm
20.0mm
15.0mm
12.4mm
9.7mm
SP 2"
SP
SP
SP
SP
SP
SP
SP
SP
52º
44º
52º
52º
52º
52º
52º
52º
52º
27x
38x
1º 55'
1º 9'
1º 6'
53'
48x
NOTE: Seeing conditions vary widely from night-to-
night and site-to-site. Turbulence in the air, even on
an apparently clear night, can distort images. If an
image appears fuzzy and ill-defined, reduce to a lower
power eyepiece.
59x
76x
41'
102x
123x
157x
238x
31'
25'
20'
6.4mm
13'
Your telescope comes supplied with a Super Plössl
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The Series 5000 Premium Eyepieces represent
the highest level of eyepiece technology. Featuring
advanced lens designs with 5, 6 and 7 elements,
super fully multi-coated lenses and some of the
widest fields of view available, they provide the user
with the highest-contrast, pinpoint-sharp images and
spectacular wide field views of the heavens. They are
made to the same high quality standards as the primary
optics in your ETX-LS 6" telescope and allow you
to get all the performance that the Advanced Coma-
Free and Schmidt-Cassegrain optical systems were
designed to deliver. Use a Series 5000 Telextender for
2, 3 or 5 times the magnification of the eyepiece alone.
There is even a 2x 2 inch Telextender for the large 2
inch eyepieces.
Series 5000 Ultra Wide Angle
NOTE: 2 inch eyepieces require the optional Series
5000 2” Enhanced Diagonal with 99% Reflectivity
(product number 07677) and the SC Thread to 2"
Accessory Adapter (product number 07085).
Series 5000 Super Plössl
Series 5000 Eyepieces
Focal
Length
Apparent
Field
Actual
Field
Type
Power
40.0mm 5 EP 2"
32.0mm 5 EP 2"
60º
60º
60º
60º
60º
60º
60º
38x
48x
1º 34'
1º 16'
1º 1'
47'
26.0mm
20.0mm
14.0mm
9.0mm
5 EP
5 EP
5 EP
5 EP
5 EP
59x
76x
109x
169x
277x
33'
21'
5.5mm
13'
Series 5000 Super Wide Angle
40.0mm SWA 2"
32.0mm SWA 2"
26.0mm SWA 2"
68º
68º
68º
68º
68º
68º
38x
45x
54x
64x
76x
95x
1º 47'
1º 31'
1º 15'
4'
20.0mm
15.0mm
12.4mm
SP
SP
SP
54'
43'
30.0mm UWA 2"
24.0mm UWA 2"
82º
82º
82º
82º
82º
82º
82º
51x
64x
1º 37'
1º 17'
58'
18.0mm
14.0mm
8.8mm
6.7mm
4.7mm
UWA
UWA
UWA
UWA
UWA
85x
Series 5000 2” Enhanced Diagonal
109x
173x
227x
324x
45'
28'
22'
15'
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Power Supplies
Imagers and Accessories
While the ETX-LS will operate with 8 “C” cell batteries,
you should consider several other power options
that might work better for your situation and save
you money.
Deep Sky Imagers (DSI)
Camera Adapters
Off Axis Guiders
Universal AC Adapter (07584): This adapter supplies
a constant regulated 12 volt DC at up to 5 Amps from
either a standard 115 volt AC or 220 volt AC household
supply. It is the only tested and recommended AC
power supply for the ETX-LS system.
#607 DC Power Cord w/ Cigarette Lighter Adapter
(07043): This adapter allows you to plug into a standard
automobile 12v DC power socket. It comes with a 25
foot cord so you can setup far from the car.
Focal Reducers
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AUTOSTAR III HANDBOX
4
5
1
1 “ENTER” Key
2
2 “BACK” Key
3 MODE Key
4 “GO TO” Key
5 Arrow Keys
6 Number /
6
Shortcut Keys
8
7 Scroll Keys
8 “MEDIA” Key
3
9 Coil Cord Port
Coil Cord
7
9
Figure 5: The AutoStar III Handbox
Tour the Cosmos with Just the
Push of a Button
The
AutoStar III hand controller operates the
The AutoStar Computer handbox provides control of
virtually every telescope function. AutoStar III has
soft-touch keys designed to have a positive feel. The
LCD (Liquid Crystal Display) is backlit with a red LED
(Light Emitting Diode) for easy viewing in the dark.
The backlit display, key arrangement, and sequential
database make AutoStar extremely user friendly.
ETX-LS telescope with just a few pushes of AutoStar’s
buttons. Some of the major features of AutoStar
III are:
•
Automatically move the telescope to any of over
90,000objectsstoredinthedatabaseormanually
enter the astronomical coordinates of any
celestial object.
2-Line LCD Display: Provides an interface between
ETX-LS and the user.
•
•
Take a guided tour of the best celestial objects to
view on any given night of the year.
•
Top line: Lists the primary category or
menu item.
Download the latest satellite data and software
revisions directly from the Meade website
(www.meade.com) and share software with other
ETX-LS enthusiasts.
•
Bottom line: Contains a menu option or
additional information about an object or
subject, depending on which function is
being performed.
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(astronomical) coordinates.
1 “ENTER” Key: Selects the option on the second
line of the display. When you are looking at
descriptive object text, “ENTER” will synchronize
the telescope’s coordinates with the object.
This is most useful when synching on bright
stars to achieve better pointing in the vicinity
of the star. See NAVIGATING THE MENUS,
page 9 and AUTOSTAR III MENU TREE,
page 23.
• Altitude (vertical) and Azimuth (horizontal)
coordinates .
• Local Time and Local Sidereal Time (LST)
• Timer and Alarm Status
• Date
• Site coordinates
• Battery status
• Telescope Serial Number
• Free Memory remaining in the telescope
2 “BACK” Key: Returns to the previous menu or
data level in the AutoStar database until the top
level, “Select Item,” is reached.
Sky Map: Press “MODE” again and the scope
changes to SkyMap Mode. In this mode, an
attached video monitor will display a tracking sky
map, showing the stars and constellations in the
areatowhichthetelescopeispointed.Pressingthe
scroll-upandscroll-downkeyswillzoomthemapin
and out.
NOTE: Pressing “BACK” while in the “Select
Item” level moves ETX-LS to the topmost screen:
“Select Item: Object.”
3 “MODE” KEY: Cycles the telescope through its
Menu: Press “MODE” again to return to the
different modes.
Menu Mode.
NOTE: During any telescope operation, pressing
and holding the “MODE” key will stop the current
operation
4 “GO TO” Key: Slews (moves) the telescope to
the coordinates of the last selected object. While
the telescope is slewing, the operation may be
aborted at any time by pressing any key except
“GO TO”. Pressing “GO TO” again resumes the
slew to the object.
From a mode other than the Menu Mode,
pressing the “BACK” key will return the
telescope to Menu Mode.
Scope Info: When in Menu Mode, pressing
“MODE” changes the telescope into Scope
Information Mode. Information about the
telescope’s status displays on the handbox and
any attached video monitor. When the status
displays, press one of the Scroll keys (Pg. 19,
Fig. 5, 7) to display the following information:
• Right
Ascension
and
Declination
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5 Arrow Keys: Slew the telescope in a specific
direction (up, down, left, and right), at any one
of nine different speeds. Speed selection is
explained in “SLEW SPEEDS”, below. The
following functions are also available with the
Arrow keys:
Number Key “1” = 1x
Number Key “2” = 2x
Number Key “3” = 8x
Number Key “4” = 16x
Number Key “5” = 0.25°/sec
Number Key “6” = 0.50°/sec
Number Key “7” = 1.0°/sec
Number Key “8” = 2.0°/sec
Number Key “9” = 4.0°/sec
• Moves the telescope – Use the Up and
Down Arrow keys to move the telescope
vertically up and down. The Left Arrow key
rotates
the
telescope
horizontally
counterclockwise, while the Right Arrow key
rotates it clockwise.
Speeds “1”,“3”, or “3” Best used for fine
centering of an object in the field of view of
a higher power eyepiece, such as a 12mm or
a 9mm eyepiece.
• Data entry – When the scope is prompting
for user entered data, use the Up and Down
Arrow keys to scroll through the letters of the
alphabet and numerical digits. The Down
Arrow key starts with the letter “A” and the
Up Arrow key starts with the digit “9.” The
Left and Right Arrow keys are used to
move the blinking cursor left and right across
the LCD display.
Speeds “4”, “5”, or “6”: Enables centering
an object in the field of a low-to-moderate
power eyepiece, such as the standard Super
Plössl 26mm.
• Catalog Paging – When the scope is
presenting long catalogs of information,
cities, celestial objects, stars, etc…, you can
move through the list a page (8 items) at a
time using the up and down arrow keys.
Speeds “7” or “8”: Best used for rough
centering of an object in the Red-Dot
Viewfinder.
Speed “9”: Moves the telescope quickly from
one point in the sky to another.
6 Number Keys: Each number key on the handbox
serves a dual function. When you prompted to
enter numerical information, the keys allow you
to directly enter digits into the handbox. At all
other times, the numeric keys act as shortcuts to
frequently accessed places in the menu tree. The
keys have the follow effect
“2/Caldwell” – instantly brings up the Caldwell
catalog entry menu, so you can access any
Caldwell object by its catalog number.
“3/Messier” – instantly brings up the Messier
catalog entry menus, so you can access any
Messier object by its catalog number.
“4/Focus” – If you have a optional electric
focuser attached to your telescope, this key will
change the function of the Arrow keys, to move
the focuser in and out, rather than to move the
telescope.
“1/Speed” – instantly brings up the scope slew
speed menu so you can change the slew rate of
the telescope
Slew Speeds
ETX-LS has nine slew speeds that are directly
proportional to the sidereal rate (the rate at
which stars appear to drift across the sky)
and have been calculated to accomplish
specific functions. Pressing a Number key
changes the slew speed, which is shown for
about two seconds on AutoStar’s display.
“5/Planet” – instantly brings up the solar system
object selection menu. So you can quickly locate
the moon, planets, comets and asteroids.
“6/Stars” – instantly brings up the star catalog
selection menu, so you can quickly locate bright
stars by name, or select stars by their catalog
index numbers.
To change the speed, press the 1/Speed.
Nine available speeds are:
“7/Volume” – brings up the volume control for the
built in speaker in your telescope.
“8/Tours” – instantly brings up the guided tours
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“9/Display” – instantly brings up the handbox
brightness controls so you can adjust your
handbox display.
“0/Mode” – This key lets you cycle through the
telescope’s modes, (See the entry above).
7 Scroll Keys: Accesses options within a selected
menu. The menu is displayed on the first line of
the screen. Options within the menu are displayed,
one at a time, on the second line. Press the Scroll
keys to move through the options. Press and hold
a Scroll key to move quickly through the options.
When entering data, the Scroll Down key and
the Down Arrow key move forward through the
alphabet & digits (A to Z, 0 to 9). The Scroll Up
key and the Up Arrow key move backward (Z to
A, 9 to 0). Common symbols are also available in
the list.
Orion Nebula (M42)
ETX-LS TIPS
Observing Considerations
• Try to pick an observing site away from street
and house lights and car headlights. While
this is not always possible, the darker the site,
the better.
8 “MEDIA” Key: The media key lets you toggle help
and audio/video descriptions on and off. At any
time you are navigating the menus, pressing the
Media Key will start an explanation of the menu’s
function. If you have selected an object, pressing
the media key, will tell you more about the object.
If a media clip is playing, pressing “MEDIA” stops
the media clip and moves you back to the menu
or object display.
• Try not to use
a
standard flashlight.
Experienced observers use red LED
flashlights, the red utility light on the AutoStar
III handbox, or tape red cellophane over their
flashlights to use for setup and map reading
so they don’t have to continually readjust
their eyes to the darkness. Be careful not to
shine bright lights if there are other observers
in the area. Do not shine a flashlight into the
telescope while someone is observing!
9 Coil Cord Port: Plug one end of the AutoStar coil
cord into this port (Pg. 19. Fig. 5, 9) located at the
bottom of the AutoStar handbox.
Coil Cord: Plug one end of the AutoStar coil cord
into the HNDBX port (Pg. 12, Fig. 4, 23) of the
input/output panel of the telescope and the other
end into the coil cord port (Fig. 5, 9).
• Dress warmly. It gets chilly when you’re sitting
for prolonged periods.
• Practice setting up your equipment during the
day or in a lighted area to become familiar
with it before going to a dark site.
• Use your 26mm eyepiece to view terrestrial
objects and wider areas of space, such as
open star clusters. Use optional higher power
eyepieces, such as a 9mm eyepiece, when
you wish to view something up close, such as
craters on the Moon or the rings of Saturn.
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AUTOSTAR III MENU TREE
Menu
Mode
Scope Info
Mode
Sky Map
Mode
Select Item:
Scope Info
Select Item:
Sky Map (FOV=xx)
up/down zooms
Version
RA
DEC
AZ
EL
Date
LMT
LST
xx = 22
xx = 31
xx = 45
xx = 63
xx = 90
Battery
Near
LaT
Lon
Free Mem
Ser.
Select Item:
Guided Tour
Select Item:
Objects
Select Item:
Event
Select Item:
Take Picture
Select Item:
Utilities
Select Item:
Shutdown Scope
Select Item:
Setup
Sunrise
Sun’s Transit
Sunset
Moonrise
Moon’s Transit
Moonset
ET=1.000 Up/Dn
ET=...
Solar System
Moon
Volume
Brightness Adj.
Contrast Adj.
Night Display
Sleep Scope
Parking Scope
A Star's Life
How Far is Far
Tonight's Best
Align
Automatic
Alt/Az 2 Star
Alt/Az 1 Star
Terrestrial
Up/Dn
Preview Exposure
Set Contrast
Mercury
Venus
Mars
Shoot + Store
Dark Calibration
Jupiter
Preferences
Moon Phases
Meteor Showers
Solar Eclipses
Lunar Eclipses
Min. of Algol
Autumn Equinox
Vernal Equinox
Winter Solstice
Summer Solstice
Saturn
Uranus
Pluto
Restore Defaults
Hi Prec. Slews
Default Alignment
Mount Type
Equatorial*
Alt. Az
Play Intro Video
Play Media 1st
Animated Video
Time Zone
Asteroids
Comets
Constellation
Andromeda
Vulpecula
Deep Sky
Named Objects
Auto Night Vision
Use GPS
Rev. N/S
Messier Objects
Caldwell Objects
NGC Objects
IC Objects
Galaxies
Nebulas
Rev. E/W
Parking Place
Max Slew Rate
Custom Rate
Planetary Neb.
Star Clusters
Quasars
Calibrate
Azimuth Drive
Elevation Drive
Finder Center
Black Holes
Star
Named Objects
Hipparcos Cat.
SAO Catalog
HD Catalog
* Future Enhancement
HR Catalog
Landolt Stds.
Gliese Catalogs
Wash. Dbl. Star
Multiple
GCVS (Variables)
Nearby
With Planets
User Catalogs
Arp Galaxies
Hickson Clusters
Satellite
ISS (Zarya)
Idefix / Ariane 42P
Landmarks
Select
Add
Delete
Figure 6: The AutoStar III Menu Tree
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followed by the Moon, asteroids, and comets.
Guided Tour Menu
Constellation is a database of all 88 Northern and
Southern Hemisphere constellations. When this menu
option is chosen and a constellation name appears on
the first line of the screen, the multimedia description
of the constellation is played. When the media
presentation completes, or you press the “MEDIA”
key to halt the presentation, a menu gives you three
choices:
When Guided Tours is selected, ETX-LS shows you a
list of theme tours that will help you explore the night
sky. These tours are pre programmed presentations of
objects that are visible for the user’s particular location,
time and date.
The most popular tour is “Tonight’s Best” that guides
the user to the best objects that are currently up
in the night sky. This tour is the easiest way to get
started exploring the cosmos with your new ETX-LS
telescope.
•
Show Summary – presents the key data about
the constellation.
•
Walk the Stars – presents a catalog of the
brightest stars in the constellation so that you
can walk the constellation figure.
Each tour will select the objects, present multi-media
clips about the object and, if you press “GoTo”, put that
object in the eyepiece of the telescope for you to view.
•
Show Objects – presents a list of the best deep
sky objects in this constellation for you
to explore.
The telescope comes pre-loaded with:
•
“Tonight’s Best”, a selection of the most
interesting objects visible on any night.
Deep Sky is a database of objects outside our Solar
System such as nebulae, star clusters, galaxies, and
quasars grouped in various catalogs like Messier,
Caldwell and NGC.
•
“A Star’s Life”, explains how stars are formed,
created, changes through their lives and finally
die using examples that are visible tonight.
•
“How Far is Far”, an explanation of the
phenomenal distances you can see with your
ETX-LS.
Star is a database of stars listed in different categories
such as named, double, variable, or nearby.
Important Note: When you are looking at descriptive
object text, pressing “ENTER” will synchronize the
telescope’s coordinates with the object. This is most
useful when synching on bright stars to achieve better
pointing in the vicinity of the star.
AutoStar Suite also allows you to create your own
guided tours of the skies, including your own objects,
titles, images and sound files (for complete instructions
on how to use the authoring tools please refer to the
reference manual included on the AutoStar Suite
DVD).
User Catalogs allows the user to define and store in
memory deep-sky objects of specific interest that are
not currently in the ETX-LS database. See Appendix B,
page 37 for more information (for complete instructions
on how to use the authoring tools please refer to the
reference manual included on the AutoStar Suite
DVD).
Object Menu
Almost all observing with ETX-LS is performed using
the Object menu category. (NOTE: Exceptions include
Guided Tour and Landmarks).
Many ETX-LS menu categories contain databases. An
ETX-LS database is a list of objects, such as stars,
planets, comets, nebulae and so forth. When one of
these objects is selected from a database by pressing
“ENTER” and then “GO TO”, ETX-LS moves your
telescope (when properly aligned) and points it at the
selected object.
Satellite is a database of Earth-orbiting objects such
as the International Space Station (ISS), the Hubble
Space Telescope (HST), Global Positioning System
(GPS) satellites, and geosynchronous orbit satellites.
In order to find and track satellites, you must download
recent orbital data into the telescope.
Landmarks stores the location of terrestrial points
The Object Menu options include:
of interest that you create in the permanent ETX-LS
Solar System is a database of the eight planets (Earth
is not included) in ascending orbits from the Sun,
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database.
major change in apparent magnitude as one of the
two stars passes behind the other. The combined
magnitude of the two stars thus dips from +2.1 to a
minimum of +3.4 halfway through the eclipse as the
second star is hidden. ETX-LS calculates minimum
magnitude time at mid-eclipse.
IMPORTANT NOTE: To use the Landmark function,
the telescope must be located and aligned exactly as
when the landmark was added to the database.
•
Select – To select a Landmark already in the
database (see ADD below), choose the “Select”
option and scroll through the list. Press “ENTER”
toselectaLandmark,thenpress“GOTO”andthe
telescope slews to the object.
Autumn and Vernal Equinox calculates the time and
date of the fall or spring equinox of the current year.
Winter and Summer Solstice calculates the time
and date of the winter or summer solstice of the
current year.
• Add – To add a Landmark, choose the “Add”
option. Enter a name for the Landmark. Locate
and center the Landmark in the eyepiece, then
press “ENTER”.
Take Picture Menu
You can take wide-field images of the night sky with
the ECLIPS CCD Module that is part of the LightSwitch
alignment system. It’s great for constellation shots
and you can see some large bright deep sky objects
as well.
Event Menu
The Event menu provides access to dates and times of
astronomical events. The Event database includes:
Sunrise and Sunset calculates the time that the Sun
rises or sets on the current date.
Moonrise and Moonset calculates the time that the
Moon rises or sets on the current date.
Moon Phases displays the date and time of the next
New, 1st Quarter, Full and 3rd Quarter Moon.
Meteor Showers provides information on upcoming
meteor showers, such as the Perseids, the Leonids,
etc. Also lists the dates of the showers and when they
reach maximum.
NOTE: Meteors are fast moving objects that cover
large areas of the sky and are usually best observed
with the naked eye.
The Pleiades Star Cluster (M45 )
Note that while you take and store images on to a user
supplied SD Card for download to your PC, to fully use
many of the options below and to preview your image
you need to connect the ETX-LS to a user supplied
external video monitor.
Solar Eclipse lists upcoming Solar Eclipses, including
the date and type (total, annular, or partial) of eclipse,
and the location and time of the first and last contacts
of the Moon’s shadow. Use the Scroll Up and Down
keys to display the available data. Remember, never
use a telescope to look at the Sun!
Start by selecting “Take Picture” from the top menu:
“Take Picture” > “ENTER”
Lunar Eclipse lists upcoming Lunar Eclipses,
including the date and type (total, partial, penumbral)
of eclipse. Use the Scroll Up and Down keys to display
the available data.
Then you will see the following options:
• Preview Exposure: Displays “Finder Image;
Exposing...”. UP/DOWN adjusts Exposure Time
(ET). A longer exposure records fainter stars. A
shorter exposure records fainter stars. A shorter
exposure is better for very bright subjects.
Min. (Minimum) of Algol is the minimum brightness
of the dramatic eclipsing binary star system, Algol. It is
relatively close at a distance of 100 light years. Every
2.8 days during a 10 hour period, Algol undergoes a
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• Set Contrast: UP/DOWN selects scrolls through
the thirteen pre-set Contrast curves available,
“Cont. Day”, “Cont. Moon”, “Cont. Planet”, “Cont.
Stars”, and “Cont. Deep1” thru “Cont. Deep9”.
includes AutoStar Suite which automatically sorts,
aligns and combines the best images, resulting in a
highly detailed color image.
The following Deep Sky Imagers models and
accessories are available:
The setting after “Cont. Deep9” is Cust.Cont.
(Custom Contrast). This setting allows you adjust
the Contrast AND Brightness to create your own
setting. Contrast is controlled using the LEFT/
RIGHT Arrow Keys. Brightness is controlled
using the UP/DOWN Arrow Keys. NOTE: to fully
utilize these the Custom Contrast setting you will
need the use of an external monitor. Otherwise
chose one of the thirteen pre-set Contrast
curves.
Deep Sky Imager III (DSI III)
Deep Sky Imager Pro III (DSI PRO III)
Deep Sky Imager II (DSI II)
Deep Sky Imager Pro II (DSI PRO II)
Deep Sky Imager Pro II (DSI PRO II), w/RGB Color
Filter Set
Utilities Menu
• Shoot & Store: Allows you to take the image
and save it to the SD once you have adjusted
the settings and are happy with the preview. You
must have an SD Card formatted with the FAT32
file system inserted in the telescope to use this
function. Press the “BACK” key to save the
image.
The Utilities menu provides access to several extra
features within ETX-LS:
Volume: Adjusts audio volume of the telescope using
the Scroll keys. When complete, press “ENTER”.
Brightness:Adjusts the brightness of the display using
the Scroll keys. When complete, press “ENTER”.
• Dark Calibration: Allows you to take a dark
frame of the same exposure as your image but
with the camera lens covered to combine and
subtract out noise from your image. You must
cover the camera lens with the lens cap before
you take the dark calibration frame.
Contrast: Adjusts the contrast of the display using the
Scroll keys. When complete, press “ENTER”.
Night Vision: When you have an external video
monitor attached to your telescope, you will find the
bright colorful displays may affect your night vision and
make it difficult to see dim objects in the eyepiece of
your telescope. The human eye’s sensitivity actually
increases for about the first half hour you are in the
dark. You have noticed this when you walk out of a
dark theater into the daytime sun, how over bright the
day seems. This dark adaptation of your eye can be
reduced by white light. Red light does not have this
effect on dark adapted vision. The night vision option
on your telescope will change the display from color, to
shades of red. There are three settings:
............................................
Deep Sky Imager (DSI) Series: these high-
performance, easy-to-use and affordable color and
black and white CCD camera suppresses electronic
noise and by not compressing data from the sensor to
increase picture quality. The Deep Sky Imager uses a
full 16-bit analog-to-digital converter to enhance picture
depth, contrast and dynamic range.
Auto – The video will automatically switch to red
The DSI series are USB compatible to easily interface
with most Windows-based laptop computers. It
at night.
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On – Selects full-time red video.
Preferences allows you to configure the telescope’s
behaviors to suit your own viewing tastes. Configurable
options include:
Off – Selects full-time color video.
Sleep Scope is a power and time saving option that
shuts down the ETX-LS telescope without forgetting
its alignment. With “Sleep Scope” selected, press
“ENTER” to activate the Sleep function. ETX-LS goes
dark, but the internal clock keeps running. Press any
key, except “ENTER”, to re-activate ETX-LS.
•
Restore Defaults sets all the settings back to
the factory original values.
•
Hi Precision Slews allows you to turn high
precision slews on and off. When this feature is
enabled and you command the telescope to
GoTo and object, it will first slew to a nearby star
and ask you to center the star and then press
“ENTER” to proceed. This feature insures the
target will be in the precise center of the
eyepiece. With faint objects at the limit of your
scope, or when making astro-images, enabling
Hi Precision assures you are right on target.
Park Scope is designed for a telescope that has
not moved between observing sessions. Align the
telescope one time, then use this function to park the
telescope. Next time it is powered up, no alignment is
required. Pressing “ENTER” causes the telescope to
move to its pre-determined Park position. Once parked,
the screen prompts to turn off power.
•
Default Alignment allows you to enable or
disable LightSwitch alignment when the scope
powers up. When you disable default alignment,
the telescope will require you to select and
perform one of the alignment procedures under
the Setup menu before your telescope will
automatically locate and track objects.
IMPORTANT NOTE: When the “Park Scope” option
is chosen and the display prompts you to turn off the
telescope’s power, ETX-LS is unable to be returned
to operation without turning the power off and then
back on.
Setup Menu
•
•
Play Intro Video allows you to disable the
introductory media message that plays when the
telescope is first powered up.
The Setup menu’s primary function is to align the
telescope. However, there are numerous other features
available within the Setup menu, including:
Play Media 1st allows you to select when
multimedia object descriptions are played. As
shipped from the factory, the telescope is
configured to play the descriptive media before
showing you the object data. Disabling the Media
1st option, will cause the object’s data to be
displayed immediately upon object selection. If
you wish to hear the descriptions, you must
explicitly press the “MEDIA” key.
Align prepares your telescope to automatically locate
and track objects. There are four different alignment
methods available. Unless you specifically disable
LightSwitch as the default alignment, the scope will
use this method immediately upon powering up. If you
desire to use an alternate method below, be sure to
disable automatic alignment in the preferences.
•
Automatic Align will use the LightSwitch®
alignment method to align your telescope.
•
Animated Media allows you to bypass the
animated portion of the media. As shipped from
the factory, most objects have two media clips.
The first is an animated overview narrated by a
male voice. This is followed by a second,
more detailed description given by a female
narrator. Disabling “Animated Media” will skip
playing the audio/video media clip and go to the
audio only presentation.
•
Alt. Az. 2 Star will begin the interactive two star
alignment process. Complete details are
described in the Advanced ETX-LS features
section of this manual.
•
•
Alt. Az. 1 Star will begin the interactive one star
alignment process. Complete details are
described in the Advanced ETX-LS features
section of this manual.
Terrestrial will set up the telescope to use on
•
Time Zone allows you to select an international
time zone, or to manually configure a time zone
to any fraction of an hour you need.
land objects.
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•
Use GPS allows you to disable use of the GPS
to determine the time and your telescope’s
location. If your scope is mounted in an
observatory, or on a permanent mount, disabling
the GPS can speed your startup. When the GPS
is disabled, you are presented a menu that offers
you the choice of using the previous locations,
and the internal clock time, entering the date,
time and location manually, taking a GPS fix, or
starting in a Demo/Terrestrial mode.
Tip: If you are having difficulties with the telescope,
the first step to getting back on track is to use
the Preferences
command rate.
–
Restore Factory Defaults
Calibrate allows you to precisely tune several aspects
of your telescope for peak performance. Calibration
options include:
•
Smart Drive allows you train the equatorial
tracking of the telescope for peak performance.
This option is only available when the telescope is
mounted on the optional tripod and
equatorial wedge.
•
•
•
Rev. N/S allows you to reverse the function of
the up and down arrow keys. This can be handy
when using diagonals.
•
•
•
•
•
Azimuth Drive allows you train your azimuth
Rev. E/W allows you to reverse the function of
the left and right arrow keys. This can be handy
when using diagonals.
drive for peak pointing accuracy.
Elevation Drive allows you train your elevation
drive for peak pointing accuracy.
Parking Place allows you to set a custom park
position. This is convenient for permanently
mounted scopes that will be restarted and parked
after every use.
Finder
Bias
recalibrates
the
ECLIPS
camera’s electronics.
Finder Darks takes thermal calibration data for
the ECLIPS camera.
•
Custom Rate allows you to make minor
adjustments to the telescopes tracking rate.
Finder Center recomputes the center of the
ECLIPS camera. When you change diagonals or
other equipment the alignment of the equipment
with the ECLIPS camera can change. If you are
getting good alignments, but objects are
consistently off center by the same amount, you
should use the option to correct the problem.
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ADVANCED ETX-LS FEATURES
Two Star Alt Az Alignment
e. “Automatic Alignment: Selecting Star” and
1. Select Alt. Az. 2 Star alignment from the Align
“Slewing” display. When it is close to the
alignment star “Center Brightest Star: Press
“ENTER””displays.Whenthetelescopeslews
to the first star, it may not appear in the field
of view in the eyepiece. Use the Red Dot
Finder (Pg. 12, Fig. 2, 16) to locate the star.
The alignment star will be easy to recognize
— it will be the brightest star in the area of
the sky where the telescope is pointing. Use
the Arrow keys to center the alignment star in
the eyepiece. When the alignment star
is centered, press “ENTER”. Repeat the
procedure for the second alignment.
menu to begin two star alignment.
2. “Automatic Alignment” displays. The system now
performs the following routines (press any ETX-
LS key to abort Automatic Alignment).
Caution: As the telescope performs the
following operations, it will swing and rotate. Keep
a safe distance from the telescope. The telescope
now finds the level and tilt position of the
telescope, and also detects where true North is.
It may not actually level or tilt the telescope or
pointtoNorth—itisjustdetectingthesepositions.
This may take a minute or two.
a. Attempts a “GPS Fix”. The GPS receiver
attempts to acquire and sync up with
signals from GPS satellite system.
“Getting GPS Fix” displays Note: Press
Mode key to abort the GPS fix. You
will then be prompted to enter the time, date
and location.
f. The telescope now slews to the second
alignment star. ETX-LS displays “Center
Brightest Star”.
g. “Press “ENTER”” displays. Use the Arrow
keys to center the alignment star in the
eyepiece. When the second alignment star is
centered, press “ENTER”.
b. Detects “level” of the base of the telescope;
finds tilt and tip. To detect level, ETX-LS
must calculate “level” at three compass
points. ETX-LS also determines the
positioning (i.e., tilt and tip) of the optical
tube.
h. “Alignment successful” displays. If “Alignment
Unsuccessful”
displays,
perform
the
procedure again.
NOTE: If you have an obstruction, such as a tree or
a building blocking your view of the alignment star, or
if you have any doubts at all about the star that has
been chosen, no problem. Just press the SCROLL
DOWN key and ETX-LS will find another star to
align upon.
c. Finds North. Locates magnetic North, then
calculates true North.
NOTE: After performing these operations, ETX-LS
now knows:
NOTE: The selected alignment stars may vary
by date and time. All that is required is for the
observer to center the selected stars in the
eyepiece when prompted.
•
•
•
•
•
The telescope’s limiting positions
Where level is for the telescope
The location of true North
The observing site’s location
The date and time
IMPORTANT NOTE: The “Telescope: Mount” option
of the Setup menu is set to “Alt/Az” as the default
alignment by the factory. The example presented
in this section assumes that you are performing
an alignment procedure for the first time with your
telescope and therefore, the “Telescope: Mount”
option does not need to be selected.
d. Once the level, tilt and North are detected,
the telescope will “GO TO” 2 alignment
stars.The telescope will go to these stars in
order to orient itself to the sky. Once it has
done this, it will be able to point to any one of
nearly100,00 objects in its database.
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This menu option allows you to define and store
terrestrial objects in the Landmark database. First,
a landmark needs to be stored in memory using the
“Landmark: Add” option. To view a landmark, use the
“Landmark: Select” option.
Alt/Az 1 Star Alignment
One-Star Alignment requires some knowledge of the
night sky. ETX-LS provides a library of bright stars.
One-Star Alignment is identical to Two-Star Alt/Az:
Alignment (see TWO-STAR ALT/AZ ALIGNMENT
above), except only one star from the database is
chosen by the observer for alignment.
To add a landmark to the database
In this procedure, you will store the location of terrestrial
landmarks in ETX-LS’s memory.
Finding Objects Not in the Database
1. Set the telescope in the home position, if
necessary. Note for future reference where
the telescope is located and if you have aligned
the telescope, which alignment method is used.
Although ETX-LS contains an extensive database of
celestial objects (stars, nebulae, planets, etc.) that you
can observe, you may eventually want to view objects
that are not part of the database. ETX-LS provides a
feature that allows you to enter an object’s R.A. and
Dec. and allows automatic slewing of the telescope to
the user-entered coordinates.
IMPORTANT NOTE: To use the Landmark
function, the telescope must be located and
aligned exactly as when the landmark(s) was
added to the database.
In order to use this option, you first need to look up the
R.A. and Dec. coordinates of the object or objects you
wish to observe. Check out the Internet, local library,
or bookstore for astronomy books, CD ROMs, or
magazines (such as Sky & Telescope or Astronomy),
to find coordinates of celestial objects.
2. Display the “Setup: Targets” menu option. Chose
“Terrestrial” and press “ENTER”. Choosing this
option turns off tracking for astronomical objects.
Be sure to change this option back to
“Astronomical” when you wish to view celestial
objects again.
To enter coordinates of an object intothe
Telescope:
3. Press “BACK” once. “Select Item: Setup”
displays.
1. Make sure ETX-LS has been initialized and the
telescope has been aligned.
4. Press the Scroll Down key once and “Select
Item: Object” displays. Press “ENTER”. “Object:
Solar System” displays.
2. From any menu press the “MODE” key to change
to Scope Info mode.
5. Press the Scroll Up key twice and “Object:
3. Scroll the display until the telescopes Current
Landmarks”
displays
Press
“ENTER”.
RA is displayed.
“Landmark: Select” displays.
4. Pressthe“GOTO”key.Thescopewillnowprompt
6. Press the Scroll Down key once. “Landmark:
you to enter the object’s coordinates.
Add” displays. Press “ENTER”.
5. “Right Asc.: 00.00.0” displays. Use the Number
keys to enter the digits for the Right Ascension
coordinate of your object. When you are finished,
press “ENTER”.
7. “Landmark Name” displays. Using Arrow keys,
enter a name for the landmark you wish to add to
the database. When finished, press “ENTER”.
6. “Declination: +00°.00’” displays. Use the Number
keys to enter the digits for the Declination
coordinate of your object. If necessary, use the
Scroll Keys to change “+” to “-”. When you are
finished, press “ENTER”.
7. The telescope will now slew to your object.
Landmarks
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8. “Center Landmark. Press “ENTER”” displays.
Using only theArrow keys (do not manually move
the telescope), move the telescope to the desired
landmark and center the object in the eyepiece.
Press “ENTER”. The object is now stored
in memory.
7. When the alarm goes off, return to the Satellite
menu and press a Scroll key until the desired
satellite is on the top line of the display.
8. Press “GO TO”, ETX-LS slews the telescope to
where the satellite should appear. The motor
drive stops and a countdown is displayed.
9. “Landmark: Add” displays. If you wish to add
NOTE: If the scheduled appearance position of the
satellite is obstructed (i.e., by a building, tree, or hill),
press “ENTER” and ETX-LS starts to move the
telescope along the expected satellite track.
Whenthetrackclearstheobstruction,press“ENTER”
again to pause the telescope, then continue with
this procedure.
more landmarks, repeat steps 5 through 7.
To view a landmark in the database
1. Make sure the telescope is located and aligned
exactly as when the desired landmark was
entered into memory.
2. Display the “Landmark: Select” menu option.
9. With about 20 seconds left on the countdown
timer, start watching through the telescope Red
Dot Finder (Pg. 12, Fig. 2, 16) for the satellite to
enter the field of view.
Press “ENTER”.
3. Use the Scroll keys to scroll through the list of
objects you have previously entered. When the
desired object displays, press “ENTER” to select
the object. Use the Scroll keys to scroll through
location information about the object, if desired.
Press “GO TO” to slew the telescope to
the landmark.
10. When the satellite enters the viewfinder field of
view,press“ENTER”.Thetelescopestartstotrack
with the satellite.
11. Use the ETX-LS Arrow keys to center the object
in the viewfinder, then look through the eyepiece
to view the object.
4. Press “BACK” to exit.
Observing Satellites
Satellite orbits change and new satellites (including the
Space Shuttle) are launched. You can use theAutoStar
Updater program approximately once a month to
get updated information and instructions on how to
download this data to ETX-LS. If orbital parameters are
more than one month old, the satellite pass may not
happen at the time predicted by ETX-LS. Downloading
requires you use a USB cable to connect the telescope
to a PC to update the satellite elements.
In this procedure, you will prepare your telescope to
observe a satellite pass.
1. Navigate to the “Object: Satellite” menu option
and press “ENTER”.
2. Use the Scroll keys to scroll through the list
of satellites.
3. Select a satellite from list and press “ENTER”.
NOTE: Satellite observing is an exciting challenge.
Most satellites are in low orbit, traveling at
approximately 17,500 mph. When visible, they move
quickly across the sky and are only in the field of
view for a few minutes, requiring ETX-LS to slew
the telescope rapidly. Best viewing is near sunrise
or sunset when the sky is dark. Viewing in the
middle of the night can be problematic because the
satellite may pass overhead, in the Earth’s shadow.
4. “Calculating...” and then “Tracking...” displays.
If the satellite is going to make a pass,
“Located” displays.
5. Use the Scroll keys to display data about the
pass:aos—acquisitionofsignalandlos—lossof
signal. If you subtract the aos from the los, you
can calculate how long the satellite will be visible.
Location information also displays.
6. “Alarm” displays after the location information.
Press “ENTER” and ETX-LS automatically sets
the alarm to sound a minute before the satellite’s
scheduled appearance. You may return to regular
observations until the alarm goes off.
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Terrestrial Observing
The ETX-LS is an excellent high-resolution, terrestrial
(land) telescopes. Viewing terrestrial objects requires
looking along the Earth’s surface through heat waves.
These heat waves often cause degradation of image
quality. Lower power eyepieces, like the Super Plössl
26mm eyepiece, magnify these heat waves less than
higher power eyepieces. Therefore, lower power
eyepieces provide a steadier, higher quality image.
If the image is fuzzy or ill-defined, reduce to a lower
power eyepiece, where the heat waves do not have
such an effect on image quality. Observing in early
morning hours, before the ground has built up internal
heat, produces better viewing conditions than during
late afternoon hours.
Capitol Reef, Utah
If you wish to observe a distant land object, such as a
mountain top or a bird, you want to use your telescope
in its Terrestrial Observing mode. To start up the
telescope in Terrestrial mode:
1. Turn on the telescope.
2. When you hear the introductory audio, press the
“MODE” key. The telescope will move to the
home position, and when it has stopped “Select
Item” will show on the Handbox screen. Use
the SCROLL keys to move through the menu
to “Align”. Press the “ENTER” key again to set-
up the “Align” menu. Use the SCROLL keys to
move to “Terrestrial” and hit “ENTER”.
ETX-LS TIPS
Too Much Power?
Can you ever have too much power? If the
type of power you’re referring to is eyepiece
magnification, yes, you can! The most
common mistake of the beginning observer
is to “overpower” a telescope by using high
magnifications which the telescope’s aperture
and atmospheric conditions cannot reasonably
support. Keep in mind that a smaller, but bright
and well-resolved image is far superior to one
that is larger, but dim and poorly resolved (see
Figs. 7a and 7b to the left). Powers above 400X
should be employed only under the steadiest
atmospheric conditions.
3. Move your telescope using the direction arrows
on the handbox while looking through the Red-
Dot Finder to put your target in the eyepiece.
4. Focus on the target with the focus knob (pg. 12,
Fig. 2, 9).
Most observers should have three or four
additional eyepieces to achieve the full range of
reasonable magnifications possible with the ETX-
LS telescopes. See OPTIONALACCESSORIES,
page 16.
Figs. 7a & 7b: Jupiter; examples of the right amount of
magnification and too much magnification.
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MAINTENANCE
The ETX-LS is a precision optical instrument designed
to yield a lifetime of rewarding viewing.
7. If the ETX-LS is not to be used for an extended
period, perhaps for one month or more, it is
advisable to remove the batteries from the
telescope. Batteries left in the telescope for
prolonged periods may leak, causing damage to
the telescope’s electronic circuitry.
Given the care and respect due any precision
instrument, the ETX-LS will rarely, if ever, require
factory servicing. Maintenance guidelines include:
1. Avoid cleaning the telescope’s optics: a little dust
on the front surface of the telescope’s correcting
lens causes virtually no degradation of image
quality and should not be considered reason to
clean the lens.
8. Do not leave the ETX-LS inside a sealed car on
a
warm summer day; excessive ambient
temperatures can damage the telescope’s
internal lubrication and electronic circuitry.
2. When absolutely necessary, dust on the front lens
should be removed with gentle strokes of a camel
hair brush or blown off with an ear syringe
(available at any pharmacy). DO NOT use a
commercial photographic lens cleaner.
Collimation
The optical collimation (alignment) of any astronomical
telescope used for serious purposes is important,
but in the case of the Schmidt-Cassegrain design of
the ETX-LS, such collimation is absolutely essential
for good performance. Take special care to read and
understand this section well so that your ETX-LS will
give you the best optical performance.
3. Organic materials (e.g., fingerprints) on the front
lens may be removed with a solution of 3 parts
distilled water to 1 part isopropyl alcohol. You
may also add
1
drop of biodegradable
As part of final optical testing, every Meade Schmidt-
Cassegrain is precisely collimated at the Meade factory
before shipment. However, vibrations in shipping can
cause the optical system to become misaligned. Re-
aligning the optics is, however, a straightforward
process.
dishwashing soap per pint of solution. Use soft,
white facial tissues and make short, gentle
strokes. Change tissues often.
4. CAUTION:Donotusescented orlotioned tissues
that can damage the optics.
5. Do not, for any reason, remove the correcting
plate from its machined housing for cleaning
or other purposes. You will almost certainly
notbeabletoreplacethecorrectorinitsproper
rotationalorientationandseriousdegradation
of optical performance will result. Meade
Instruments assumes no liability for damage
incurred to the telescope in this way.
To check the collimation of your ETX-LS, center a bright
star that is overhead, or use a “hot spot” of reflected
Sunlight from a chrome car bumper, with the supplied
26mm eyepiece. Allow the telescope to adjust to the
temperatureofyourobservationsitebeforeproceeding;
temperature differences between the optics and the
outside air can cause distortion in the images.
6. If the ETX-LS is used outdoors on a humid
night, water condensation on the telescope
surfaces will probably result. While such
condensation does not normally cause any
damage to the telescope, it is recommended that
the entire telescope be wiped down with a dry
cloth before the telescope is packed away. Do
not, however, wipe any of the optical surfaces.
Rather, simply allow the telescope to sit for some
time in the warm indoor air, so that the wet optical
surfaces can dry unattended.
(1)
(2)
(3)
Figure 8: Collimation
With the star or hot spot centered, de-focus
the image.
You will notice that the out of focus star image looks
like a ring of light surrounding a dark central spot; the
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dark central spot is in fact the shadow of the secondary
mirror. Turn the focus knob until the ring of light fills
about 10% of the eyepiece field-diameter. If the dark
central spot is offset in (i.e., not concentric with) the ring
of light, your telescope’s optical system is misaligned
and requires collimation.
eyepiece field of view (Fig. 8, 2), in the same
direction as the darker shadow is offset in the
ring of light.
4. Turn the set screw that you found with the
pointing exercise while looking in the eyepiece.
You will notice that the star image will move
across the field. If while turning the defocused
star image flies out of the eyepiece field, then
you are turning the screw the wrong way. Turn
the opposite direction and bring the image back
to the center of the field.
Follow these steps for collimation of the
optical system:
1. The only adjustments possible, or necessary, on
the ETX-LS are from the three inner most screws
Collimation Screws
5. If the screw you are turning becomes very loose,
tighten the other two screws by even amounts. If
the screw you are turning gets too tight, un-thread
the other two by even amounts.
6. When you bring the image to center (Fig.
8, 3), carefully examine the evenness of the ring
of light (concentricity). If you find that the dark
center is still off in the same direction, continue to
make the adjustment in the original turning
direction. If it is now off in the opposite direction,
you have turned too far and you need to turn in
the opposite direction. Always double check the
image in the center of the field of the eyepiece.
located at the inner surface of the secondary
mirror housing.
CAUTION:Donotforcethethreecollimationscrews
past their normal travel and do not loosen them
more than two full turns in a counterclockwise
direction or the secondary mirror may come loose
from its support. You will find that the adjustments
are very sensitive, usually requiring only one-half
turn or less to produce the desired result.
7. You may find after your initial adjustment that the
dark center is off in a new direction (e.g., instead
of being off side-to-side it is now off in an up-and-
down direction). In this case repeat steps 2
through 6 to find the new adjustment screw.
2. While looking at the defocused star image, notice
which direction the darker shadow is offset in
the ring of light or notice which part of the ring is
the thinnest (Pg. 32 Fig. 8, 1). Place your index
finger in front of the telescope so that it touches
one of the collimation set screws. You will see the
shadow of your finger in the ring of light. Move
your finger around the edge of the black plastic
secondary mirror support until you see the
shadow of the finger crossing the thinnest part
of the ring of light. At this point, look at the front of
the telescope where your finger is aiming. It will
either be pointing directly at a set screw, or it will
be between two set screws aiming at the set
screw on the far side of the black plastic
secondary mirror support. This is the set screw
that you will adjust.
8. Now try a higher power eyepiece (e.g., 9mm or
less) and repeat the above tests. Any lack of
collimation at this point will require only very
slight adjustments of the three set screws. You
now have good collimation of the optics.
9. As a final check on alignment, examine the star
image in focus with the higher power eyepiece
as suggested above, under good viewing
conditions. The star point should appear as a
small central dot (commonly referred to as an
“Airy disc”) with a diffraction ring surrounding it.
To give a final precision collimation, make
extremely slight adjustments of the three set
screws, if necessary, to center the Airy disc in the
diffraction ring. You now have the best alignment
of the optics possible with this telescope.
3. Using the Arrow keys at the slowest slew speed,
move the defocused image to the edge of the
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Inspecting the Optics
Suite DVD supplied with your telescope. The Updater
goes online to the Meade web site and checks to see if
there is a newer version available and can download it
directly to the telescope through a user supplied USB
cable or it can create a bootable mini SD Card that,
when inserted into the telescope’s SD Card slot (Pg.
12, Fig. 3, 10), will transfer the files to the telescope on
startup. Please see the AutoStar Suite documentation
for details on how to perform the update.
A Note About the “Flashlight Test”: If a flashlight or
other high-intensity light source is pointed down the
main telescope tube, the view (depending upon the
observer’s line of sight and the angle of the light) may
reveal what appears to be scratches, dark or bright
spots, or just generally uneven coatings, giving the
appearance of poor quality optics. These effects are
only seen when a high intensity light is transmitted
through lenses or reflected off the mirrors, and can be
seen on any high quality optical system, including giant
research telescopes.
Here are the steps to update your firmware:
1. InstallAutoStarSuitesoftwareandtheUSBdriver
from the DVD included with the telescope.
The optical quality of a telescope cannot be judged by
the “flashlight test;” the true test of optical quality can
only be conducted through careful star testing.
2. Attached telescope with user supplied USB
cable or insert a mini SD card or micro SD in mini
holder into a card reader to internet connected
computer.
Gauging the Movement of
the Telescope
3. Turn on the ETX-LS and press “MODE” to abort
from the alignment.
A common complaint of many first-time telescope
owners is that they cannot see the telescope “move”
when the motor drive is engaged. If fact, when the
batteries are installed, the power is on, the telescope
is moving. However, the movement is at the same
speed as the hour hand of a 24-hour clock; as such,
the movement is difficult to discern visually.
4. Run AutoStar Suite
5. Select the “Telescope” menu from the menu bar
near the top of the screen.
6. Select “Product Updates” from the drop
down menu.
7. Click “OK” or “Yes” in the message box to
be sure you have the latest version of the
Updater software.
To check the movement of your telescope, look at an
astronomical object through the telescope’s eyepiece
with the telescope polar aligned and with the motor
drive on. If the object remains stationary in the field
of view, your telescope is operating properly. If not,
check to ensure that “Astronomical” is selected in the
“Targets” option of the setup menu.
8. If you see “Error Box” about searching for COM
Ports and you have your telescope connected
with a USB cable, click “Yes”. If you are using an
SD Card, click “No”.
9. Click on “Upgrade AutoStar Software Now”.
Updating Your ETX-LS Firmware
10. Open the drop down menu called “Specify Type
of AutoStar...”.
Meadeisconstantlyrefiningandimprovingtheoperating
firmware that controls our computerized telescopes
and we even add new features and capabilities from
time to time. Your new ETX-LS shipped with the most
current firmware at the time of manufacture, but there
may well be a new version available through the
AutoStar Updated program supplied on the AutoStar
11. Select ETX-LS.
12. If you want to make an SD Card, check the
SD box.
13. Click “OK” and the firmware will download
and install.
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CUSTOMER
SERVICE
ETX-LS SD Card for Updates and
Image Storage
Your ETX-LS telescope comes with a “Mini SD Card”
slot located in the front edge of the fork arm. With a
user supplied “Mini SD Card” or a “Micro SD Card” in
a Mini Card Holder, you can update your telescope
firmware or save images made with the ECLIPS CCD.
If you have a question concerning your ETX-LS
telescope, call the Meade Instruments Customer
Service Department at (800) 626-3233. Customer
Service hours are 7:00 AM to 5:00 PM, Pacific Time,
Monday through Friday. In the unlikely event that
the ETX-LS requires factory servicing or repairs,
before returning the telescope to the factory, write
or call the Meade Customer Service Department
to provide an explanation of the problem, as well as
your name, address and daytime telephone number.
The great majority of servicing issues can be resolved
by telephone, avoiding return of the telescope to
the factory.
Only use SD Cards bearing the official SD logo. Each
card must be properly formatted, using a PC utility or
AutoStar Suite, before use in the ETX-LS. The card
must be formatted with the FAT32 File System.
Your ETX-LS will not power-up with an SD Card
inserted in its slot unless you are updating the firmware
from the card. This includes an SD Card used to store
images from the ECLIPS camera. To ensure the
application software boots normally, remove the SD
Card before switching on the ETX-LS LightSwitch. If
you observe that the ETX-LS is taking a long time to
power-up, please ensure the SD Card slot is empty
and cycle the ETX-LS LightSwitch off and on.
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APPENDIX A:
TRAINING THE DRIVE
Perform this procedure if you are experiencing any
pointing accuracy problems. Fig. 9 depicts the complete
Drive Training procedure.
NOTE: Use a terrestrial object, such as a telephone
pole or lamp post, to train the drive.
Complete this exercise once every 3 to 6 months.
Figure 9: Training the Drive
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APPENDIX B:
CREATING USER OBJECTS and TOURS
User Object are catalogs of deep sky objects you can
create or import that are not in the ETX-LS telescope.
You can define your own objects and create your own
titles.
Tours, similar to the three preloaded guided tours
(Tonight’s Best”, “A Star’s Life” and “How Far Is Far”),
can also created. You can chose your own theme and
objects.
For complete instructions on how to use the authoring
tools to create tours, user obects and load your own
files please refer to the reference manual included on
the AutoStar Suite DVD.
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APPENDIX C:
BASIC ASTRONOMY
In the early 17th century Italian Scientist Galileo, using
a crude telescope considerably smaller than the ETX-
LS, turned it to look towards the sky instead of distant
trees and mountains. What he saw, and what he
realized about what he saw, forever changed the way
mankind thought of the universe. Imagine what it must
have been like being the first human to see moons
revolve around the planet Jupiter or to see the changing
phases of Venus! Because of his observations, Galileo
correctly realized Earth’s movement and position
around the Sun, and in doing so, gave birth to modern
astronomy. Yet Galileo’s telescope was so crude, he
could not clearly make out the rings of Saturn.
The Moon is, on average,
a distance of 239,000 miles
(380,000km) from Earth
and is best observed during
its crescent or half phase
when Sunlight strikes the
Moon’s surface at an angle.
It casts shadows and adds
a sense of depth to the
view. No shadows are seen
during a full Moon, causing
the overly bright Moon
to appear flat and rather
uninteresting through the
Galileo’s discoveries laid the foundation for
understanding the motion and nature of the planets,
stars,andgalaxies.Buildingonhisfoundation,Henrietta
Leavittdeterminedhowtomeasurethedistancetostars;
Edwin Hubble proposed a glimpse into the origin of the
universe; Albert Einstein unraveled the relationship
of time and light. Almost daily, using sophisticated
successors to Galileo’s crude telescope, such as the
Hubble Space Telescope, more and more mysteries of
the universe are being solved and understood. We are
living in a golden age of astronomy.
telescope. Be sure to use a neutral Moon filter when
observing the Moon. Not only does it protect your eyes
from the bright glare of the Moon, but it also helps
enhance contrast, providing a more dramatic image.
Using the ETX-LS, brilliant detail can be observed
on the Moon, including hundreds of lunar craters and
maria, described below.
Craters are round meteor impact sites covering most
of the Moon’s surface. With no atmosphere on the
Moon, no weather conditions exist, so the only erosive
force is meteor strikes. Under these conditions, lunar
craters can last for millions of years.
Unlike other sciences, astronomy welcomes
contributions from amateurs. Much of the knowledge
we have on subjects such as comets, meteor showers,
variable stars, the Moon and our solar system comes
fromobservationsmadebyamateurastronomers.Soas
you look through your Meade ETX-LS telescope, keep
Galileo in mind. To him, a telescope was not merely a
machine made of glass and metal, but something far
more - a window through which the beating heart of the
universe might be observed.
Maria(pluralformare)aresmooth,darkareasscattered
across the lunar surface. These dark areas are large
ancient impact basins that were filled with lava from
the interior of the Moon by the depth and force of a
meteor or comet impact.
Twelve Apollo astronauts left their bootprints on the
Moon in the late 1960’s and early 1970’s. However,
no telescope on Earth is able to see these footprints or
any other artifacts. In fact, the smallest lunar features
that may be seen with the largest telescope on Earth
are about one-half mile across.
Objects in Space
Listed below are some of the many astronomical
objects that can be seen with the ETX-LS
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Planets change positions in the sky as they orbit
around the Sun. To locate the planets on a given day or
month, consult a monthly astronomy magazine, such
as Sky and Telescope or Astronomy. You can also
consult ETX-LS for information about planets. Scroll
to the “Object: Solar System” menu and scroll through
the lists of planets. When a planet you are interested
in displays, press “ENTER”. Use the Scroll keys to
display information about the planet, such as the
planet’s coordinates, and the rise and set times (Tip:
enter a date in the Date menu and you can determine if
a planet(s) will be visible during the night of the entered
date by checking its rise and set times). Listed below
are the best planets for viewing through the ETX-LS.
Saturn is nine times the
diameter of Earth and
appears as a small, round
disk with rings extending
out from either side. In
1610, Galileo, the first
person to observe Saturn
through a telescope, did not
understandthatwhathewas
seeing were rings. Instead,
he believed that Saturn had
“ears.” Saturn’s rings are
composed of billions of ice
particles ranging in size
from a speck of dust to the size of a house. The major
division in Saturn’s rings, called the Cassini Division,
is occasionally visible through the ETX-LS. Titan, the
largest of Saturn’s 18 moons can also be seen as a
bright, star-like object near the planet.
Mars is about half the diameter of Earth, and appears
through the telescope as a tiny reddish-orange disk.
It may be possible to see a hint of white at one of the
planet’s Polar ice caps. Approximately every two years,
when Mars is closest to Earth in its orbit, additional
detail and coloring on the planet’s surface may
be visible.
Deep-Sky Objects
Star charts can be used to locate constellations,
individual stars and deep-sky objects.
Jupiter is the largest planet
in our solar system and is 11
Examples of various deep-sky objects are
given below:
times the diameter of Earth.
Theplanetappearsasadisk
with dark lines stretching
Stars are large gaseous objects that are self-
illuminated by nuclear fusion in their core. Because
of their vast distances from our solar system, all stars
appear as pinpoints of light, irrespective of the size of
the telescope used.
across the surface. These
lines are cloud bands in
the atmosphere. Four of
Jupiter’s 16 moons (Io,
Europa, Ganymede, and
Nebulae are vast interstellar clouds of gas and dust
where stars are formed. Most impressive of these is
the Great Nebula in Orion (M42), a diffuse nebula that
appears as a faint wispy gray cloud. M42 is 1600 light
years from Earth.
Callisto) can be seen as
“star-like” points of light
when using even the lowest
magnification. These moons orbit Jupiter so that the
number of moons visible on any given night changes
as they circle around the giant planet.
Open Clusters are loose groupings of young stars,
all recently formed from the same diffuse nebula.
The Pleiades is an open cluster 410 light years away.
Through the ETX-LS, numerous stars are visible.
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SPECIFICATIONS
Model and Product Number
6"ETX-LS ACF # 0610-03-10
Optical System
Optical Design
Advanced Coma-Free (ACF)
Primary Mirror Diameter
Primary Mirror Material
Focal Length, Focal Ratio
Optical Coatings
6” (152mm)
Pyrex® Glass
1524mm, f/10
Ultra-High Transmission Coatings (UHTC™)
Resolving Power (arc seconds)
Limiting Visual Steller Magnitude
0.76
14
Mount
Mount Type
Drives
Aluminum Single-Arm Fork Altazimuth
4.875 inch Precision Worm Drive
8 “C” Cell Batteries or AC Adapter
3 to 5 Hours
Power
Battery Life
Tripod
New Adjustable-height Steel Leg Tripod
Electronics
Controller Hand Box
Processor
AutoStar III
400 Megaherz Blackfin
256 Megabytes of NAND Flash
Micro SD Card (user supplied)
USB 2.0
Memory
Storage
Input/Output
Speaker
Built-in Mount
Connections
USB, AutoStar Hand Box
Multimedia
Content
Descriptions of the Planets, Moon, Stars, Clusters,
Nebulae, Galaxies and More
Audio
Video
Over 4 Hours Featuring the Voice of Sandy Wood
from “Star Date”
30 Minutes of Movies and Animations Plus
Hundreds of Still Images
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SPECIFICATIONS
Model and Product Number
6" ETX-LS SC # 0610-03-12
Optical System
Optical Design
Schmidt Cassegrain (SC)
Primary Mirror Diameter
Primary Mirror Material
Focal Length, Focal Ratio
Optical Coatings
6” (152mm)
Pyrex® Glass
1524mm, f/10
Ultra-High Transmission Coatings (UHTC™)
Resolving Power (arc seconds)
Limiting Visual Steller Magnitude
0.76
14
Mount
Mount Type
Drives
Aluminum Single-Arm Fork Altazimuth
4.875 inch Precision Worm Drive
8 “C” Cell Batteries or AC Adapter
3 to 5 Hours
Power
Battery Life
Tripod
New Adjustable-height Steel Leg Tripod
Electronics
Controller Hand Box
Processor
AutoStar III
400 Megaherz Blackfin
256 Megabytes of NAND Flash
Micro SD Card (user supplied)
USB 2.0
Memory
Storage
Input/Output
Speaker
Built-in Mount
Connections
USB, AutoStar Hand Box
Multimedia
Content
Descriptions of the Planets, Moon, Stars, Clusters,
Nebulae, Galaxies and More
Audio
Video
Over 4 Hours Featuring the Voice of Sandy Wood
from “Star Date”
30 Minutes of Movies and Animations Plus
Hundreds of Still Images
42
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MEADE LIMITED WARRANTY
Every Meade telescope, spotting scope, and telescope accessory is warranted by Meade Instruments
Corporation (“Meade”) to be free of defects in materials and workmanship for a period of ONE YEAR
from the date of original purchase in the U.S.A. and Canada. Meade will repair or replace a product,
or part thereof, found by Meade to be defective, provided the defective part is returned to Meade,
freight-prepaid, with proof of purchase. This warranty applies to the original purchaser only and is non-
transferable. Meade products purchased outside North America are not included in this warranty, but are
covered under separate warranties issued by Meade international distributors.
RGA Number Required: Prior to the return of any product or part, a Return Goods Authorization (RGA)
number must be obtained from Meade by writing, or calling (800) 626-3233. Each returned part or
product must include a written statement detailing the nature of the claimed defect, as well as the
owner’s name, address, and phone number.
This warranty is not valid in cases where the product has been abused or mishandled, where unauthorized
repairs have been attempted or performed, or where depreciation of the product is due to normal wear-
and-tear. Meade specifically disclaims special, indirect, or consequential damages or lost profit which
may result from a breach of this warranty. Any implied warranties which cannot be disclaimed are hereby
limited to a term of one year from the date of original retail purchase.
This warranty gives you specific rights. You may have other rights which vary from state to state.
Meade reserves the right to change product specifications or to discontinue products without notice.
27 Hubble, Irvine, California 92618
14-7302-06
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