90GT | WiFi TELESCOPE
INSTRUCTION MANUAL
MODEL #22094
90GT | WiFi TELESCOPE
WHAT’S IN THE BOX
We recommend saving your telescope box so it can be used to store the telescope when it is not in use. Unpack the
box carefully as some parts are small. Use the parts list below to verify that all parts and accessories are present.
PARTS LIST
Tripod
(pre-assembled)
Telescope optical tube
assembly
Accessory tray
StarPointer finderscope
and bracket
(preassembled)
Star Diagonal (1.25”)
Small dust cap for
focuser
25 mm Kellner
eyepiece (1.25”)
Battery pack
(batteries not included)
Large dust cap for
objective lens
10 mm Kellner
eyepiece (1.25”)
Cosmic Calendar Poster
SOLAR WARNING
Never look directly at the Sun with the naked eye or with a telescope (unless you have the proper solar filter). Permanent and irreversible eye damage may result.
Never use your telescope to project an image of the Sun onto any surface. Internal heat build-up can damage the telescope and any accessories attached to it.
Never use an eyepiece solar filter or a Herschel wedge. Internal heat build-up inside the telescope can cause these devices to crack or break, allowing unfiltered sunlight to
pass through to the eye.
Do not leave the telescope unsupervised, either when children are present or adults who may not be familiar with the correct operating procedures of your telescope.
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Fig. 1
90GT | WiFi TELESCOPE
PREREQUISITES
Your Cosmos 90GT WiFi Telescope requires one of the following power sources:
• 8 x AA batteries
• 12 volt DC source with at least 1 ampere of current
• Celestron PowerTank (Sold Separately)
You will also need a smartphone or tablet to operate the telescope. Compatible devices include Apple iPhone or iPad
with iOS 6 or later, and Samsung smartphones or tablets with Android 4.0. Visit celestron.com/cosmos for a complete
compatibility list.
Before you begin, you’ll need to install the free Cosmos™ Celestron Navigator app on your device. Download the app
from the App Store or Google Play.
ASSEMBLING YOUR TELESCOPE
You won’t need tools to assemble the 90GT WiFi. Remove all the items from their packaging, then:
1. Open the tripod until the center brace is fully extended (Figure 2).
2. Thread the captive center bolt into the accessory tray (Figure 3).
3. Place the fork arm assembly on the tripod and secure it using the captive silver knob under the top of the tripod
(Figure 4).
4. Attach the telescope optical tube by positioning the dovetail into the dovetail holder on the fork arm. Make sure the
bottom of the dovetail is flat against the dovetail holder. Firmly tighten the thumb bolt. (Figure 5).
5. Adjust the tripod to a comfortable height and level it, using the lock knobs to secure each of the tripod legs.
6. Install eight AA batteries (not included) into the battery pack, noting the correct position for + and -. Leave the
battery pack in the accessory tray.
NOTE: The accessory tray has a special holder suitable for your smartphone or small tablet.
Fig. 4
Fig. 3
Fig. 2
Fig. 5
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