CELESTRON 22451-CGL Starsense Explorer LT80AZ Refractor Telescope Installation Guide
- June 6, 2024
- Celestron
Table of Contents
80AZ
Quick Setup Guide
ITEM #22451
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Unpack your telescope and verify that all parts are present. Your StarSense
Explorer LT includes:
a telescope tube with altitude slow motion rod attached, a lens cap, an
accessory bag, a tripod with alt-azimuth yoke mount and center leg brace
attached, a StarSense smartphone dock, two eyepieces, a 2x Barlow lens, two
tube mounting screws, an erect image diagonal, an eyepiece accessory tray, a
StarPointer finderscope, and StarSense Explorer app code card.
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To set up the tripod, spread the legs outward until they are fully extended
and push down the center leg brace.
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Extend the center portion of each of the three tripod legs down about 6 to 12
inches. Use the tightening screw on each leg to secure the extended leg in
place.
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Check to ensure that all three legs are the same height once extended to
provide a level platform for the telescope.
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Place the eyepiece accessory tray on top of the tripod’s center leg brace. Thread the tray into the threaded hole in the center of the leg brace until it is fully seated.
NOTE: If necessary, rotate the accessory tray counterclockwise until the
accessory holes
are not covered by the leg brace arms as shown here.
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Loosen the knob on the altitude rod guide on the side of the yoke mount so the
hole is unobstructed.
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Slide the altitude rod into the rod guide on the mount and lower the altitude
hubs on the telescope tube into the cradles on the top of each yoke arm.
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Tighten the altitude rod guide screw to hold the telescope in place.
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Insert the two tube mounting screws through the yoke mount and into the hubs
on the telescope tube to secure it in place.
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To install the finderscope, remove the two silver nuts from the threaded posts
on the top of the tube, near the focuser.
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Place the two holes in the base of the finderscope over the threaded posts so
the finderscope base sits flush on the telescope tube. Make sure that the
round window on the finderscope is pointed away from the focuser.
| Thread the two nuts back onto the threaded posts.
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There is a small clear plastic tab inserted between the battery and the
contact. This was included to prevent the battery from discharging during
shipment. Pull this out to allow your battery to work.
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To install the diagonal, loosen the setscrews on the back of the focuser and
pull out the small dust cap.
Remove the caps from both sides of the diagonal.
| Insert the smaller tube on the diagonal into the back of the
focuser and secure it by tightening the setscrews.
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To install the eyepiece, loosen the setscrews on the open end of the star
diagonal. Insert the silver barrel on the bottom of the eyepiece into the star
diagonal and secure by tightening the setscrews. Always start using your low-
power eyepiece (25 mm) to help you find the target you wish to view. You can
always change to your high-power eyepiece (10 mm) later.
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To use the Barlow lens, remove your star diagonal from the telescope, insert
the Barlow lens into the telescope and insert your star diagonal into the
Barlow lens. This will double the magnification of whatever eyepiece you use
it with.
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To install the StarSense smartphone dock, loosen the two setscrews on the dock
mount on the top of the telescope tube and slide the dovetail on the bottom of
the dock into the mount. Secure in place by tightening both screws.
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Remove the lens cap from the front of the telescope.
To observe, look through the eyepiece as shown above. Focus the image by
turning the knobs below the focuser.
Downloading and Activating the App
Before you take your telescope outside, download the StarSense Explorer app to your mobile device. Search for “Celestron StarSense Explorer” in the Apple App Store or Google Play. The app is large, so we recommend downloading it while connected to Wi-Fi.
Once you have downloaded the app, locate the orange postcard in your telescope
box. Launch the app. When prompted, enter the activation code
on the postcard to activate the app. Your code will unlock up to 5 devices.
Moving the Telescope
| To move the mount left and right,
loosen the azimuth tension knob located on the yoke mount between two of the
tripod legs.
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| Hold the tripod leg with one hand and
grab the telescope tube focuser and move it left or right as desired. The
amount of tension you feel when moving the telescope can be adjusted by
tightening or loosening the knob to a level that is comfortable
for you.
| To move the telescope up and down,
hold the focuser of the telescope in one hand and loosen the knob on the slow-
motion rod guide. The telescope can now be moved up or down as desired. When
you are close to your target, tighten the knob to secure the telescope in
place.
| Fine adjustment in the up-and-down
direction can be done using the altitude slow motion rod. Keep the rod guide
knob locked and rotate the black handle on the slow-motion rod. This allows
you to move the telescope in small increments to help center objects or follow
celestial objects in the night sky.
| The altitude slow motion rod has a
limited range of motion of about 15 degrees. If you run into the end of travel
and the knob will no longer turn, you can reset it by loosening the rod guide
knob and turning the slow-motion rod handle in the opposite direction until
you are in the middle of its travel, then retighten the
rod guide knob.
Aligning the Finderscope
| CHOOSE A TARGET
Take the telescope outside during the day and find an easily recognizable
object, such as a streetlight, car license plate, or sign. The object should
be as far away as possible, but at least a quarter-mile away.
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| CENTER THE TARGET IN THE
EYEPIECE
Look through the telescope using your lower-powered eyepiece. Move the
telescope until the
object you chose lies in the center of the view. If the image is blurry,
gently turn the focus knobs on either side of the telescope until it comes
into sharp focus.
NOTE: The image in your telescope may appear inverted. This is perfectly
normal in an astronomical telescope.
| LOOK THROUGH
FINDERSCOPE
Once the object is centered in your 25 mm eyepiece, look through the
finderscope and locate the red dot.
| ADJUST THE FINDERSCOPE
Without moving the telescope, use the two adjustment knobs to move the finder
around until
the red dot appears over the same object you are observing in the telescope’s
25 mm eyepiece.
| YOUR FINDERSCOPE IS NOW
ALIGNED!
It should not require realignment unless it is bumped or dropped.
*SOLAR WARNING!
Never attempt to view the Sun through any telescope without a proper solar filter!
Attaching the Smartphone
| Remove the large-cap
covering the mirror on the front of the StarSense dock.
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| Pull open the spring-loaded
slider on the top of the phone dock and set the phone into the holder so it is
flush with the bottom lip of the phone holder. Slowly release the slider to
secure the phone in place.
Your First Night Out
Congratulations! Your telescope is now set up and you are ready to explore the cosmos. Take the telescope outside, insert your 25 mm eyepiece, remove the lens cap, insert your smartphone into the holder, and launch the StarSense Explorer app. The tutorial in the app will walk you through the steps on finding your first astronomical target.
For more information on this product, please visit the respective product page oncelestron.com
SOLAR WARNING:
Never attempt to view the sun through any telescope without a proper solar
filter.
Need assistance?
Contact Celestron Technical Support celestron.com/pages/technical-
support
08-20
www.celestron.com/pages/warranty
References
- Celestron - Telescopes, Telescope Accessories, Outdoor and Scientific Products
- Technical Support | Celestron
- Warranty | Celestron
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