CELESTRON 22453 StarSense Explore LT User Guide
- June 6, 2024
- Celestron
Table of Contents
LT
127AZ
Quick Setup Guide
ITEM #22453
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, two tube mounting screws, a StarSense smartphone dock, two eyepieces, a 2x Barlow lens, an eyepiece accessory tray, a StarPointer finderscope and StarSense Explorer app code card.
To set up the tripod, spread the legs outward until they are fully extended
and push down the center leg brace.
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.
Check to ensure that all three legs are the same height once extended to
provide a level platform for the telescope.
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.
Loosen the knob on the altitude rod guide on the side of the yoke mount so the
hole is unobstructed.
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.
Tighten the altitude rod guide screw to hold the telescope in
place.
Insert the two tube mounting screws through the To inst yoke mount and into
the hubs on the telescope tube nuts from the threaded posts on the top of the
tube, to secure it in place. near the focuser.
To install the fi finderscope, remove the two silver nuts from the threaded posts on the top of the tube, near the focuser.
Place the two holes in the base of the fi finderscope over the threaded posts
so the fi finderscope base sits fluse on the telescope tube. Make sure that the
round window on the fi finderscope is pointed away from the focuser.
Thread the two nuts back onto the threaded posts.
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.
Loosen the setscrews on the telescope focuser and remove the dust
cap. To
install the eyepiece, loosen the setscrews on the focuser. Insert the silver
barrel on the bottom of the eyepiece into the focuser and secure it by
tightening the setscrews. Always start using your low-power eyepiece (25 mm)
to help you fi nd the target you wish to view. You can always change to your
high-power eyepiece (10 mm) later. To use the Barlow lens, remove your
eyepiece from the telescope focuser, insert the Barlow lens into the focuser
and insert your eyepiece into the Barlow lens. This will double the magnifi
cation of whatever eyepiece you use it with.
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.
Remove the lens cap from the
front of the telescope. To observe, look through the eyepiece as shown above.
Focus the image by 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 tarSense 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.
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 ill no longer turn,
you can reset it by loosening the rod guide knob and turning the slow-motion
rod handle the opposite direction until you are in the middle of its travel,
then retighten the rod guide knob.
Aligning the Finderscope
The fi under is one of the most important parts of your telescope. It helps you locate objects and center them in the eyepiece. The first time you assemble your telescope, you need to align the fi under to the telescope’s main optics. It’s best to do this during the day*.
- SOLAR WARNING! Never attempt to view the Sun through any telescope without a proper solar fi later!
CHOOSE A TARGET
Take the telescope outside during the day and fi 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.
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 fi
finderscope and locate the red dot.
ADJUST THE FINDERSCOPE
Without moving the telescope, use the two adjustment knobs to move the fi under
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.
Attaching the Smartphone
Remove the large-cap covering the mirror on the front of the StarSense
dock. Pull open the spring-loaded slider on the top of the
phone dock and set the phone into the holder so it is fluse with the bottom tip
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 5 m eyepiece, remove the
lens cap, insert your smartphone into the holder, and launch the StarSense
Explorer app. The tutorial n the app will walk you through the steps on fi
finding your first astronomical target.
For more information on this product, please visit the respective product page on celestron.com
SOLAR WARNING: Never attempt to view the sun through any telescope
without a proper solar filater.
Need assistance?
Contact Celestron Technical Support celestron.com/pages/technical-
support
08-20
www.celestron.com/pages/warranty
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