Celestron StarSense Explorer LT 127 AZ User Manual

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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, 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.
ITEM #22453
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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127AZ
Quick Setup Guide
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
yoke mount and into the hubs on the telescope tube
to secure it in place.
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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Celestron StarSense Explorer LT 127 AZ Specifications

General

Type	Refractor
Aperture	127 mm
Focal Length	1000 mm
Highest Useful Magnification	300x
Lowest Useful Magnification	18x
Limiting Stellar Magnitude	13
Resolution (Rayleigh)	1.1 arc seconds
Resolution (Dawes)	0.91 arc seconds
StarSense Technology	Yes
Smartphone Compatibility	Yes
Mount Type	Alt-Azimuth
Tripod	Aluminum, adjustable height
Optical Coatings	Fully Coated
Eyepiece	25mm

Summary

Quick Setup Guide

Tripod Setup

Spread tripod legs, extend leg sections, and ensure level height for stable setup.

Attaching Telescope Tube

Loosen altitude rod guide, insert altitude rod, and secure tube to yoke mount.

Installing Finderscope and Accessories

Attach accessory tray and install the finderscope onto the telescope tube.

Installing Eyepiece and Barlow Lens

Eyepiece Installation

Loosen focuser setscrews, insert eyepiece, and tighten screws to secure.

Barlow Lens Usage

Insert Barlow lens into focuser, then insert eyepiece for doubled magnification.

Downloading and Activating the App

App Download and Installation

Download the StarSense Explorer app from your device's app store.

App Activation

Launch the app and enter the activation code from the postcard.

Moving the Telescope

Azimuth and Altitude Movement

Move telescope left/right with azimuth knob and up/down with slow motion rod.

Fine Adjustment and Travel Limits

Use slow motion rods for precise increments and understand travel range.

Aligning the Finderscope

Target Selection and Centering

Center a distant object in the main eyepiece during the day.

Finderscope Red Dot Alignment

Adjust finderscope knobs until its red dot aligns with the centered object.

Attaching the Smartphone

Smartphone Dock Installation

Attach the StarSense smartphone dock to the telescope mount.

Mounting the Smartphone

Place and secure your smartphone into the mounted dock.

Your First Night Out

Prepare for Observation

Insert eyepiece, remove lens cap, attach phone, and launch the app.