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Celestron Cosmos 90GT WiFi Telescope

Inspired by "Cosmos: A Spacetime Odyssey" this wifi telescope is completely controlled by your smart device.

  • 90mm refractor telescope
  • 910mm focal length
  • Computerised Alt-Azimuth mount with WiFi connectivity
  • f/9.1 focal ratio
  • 25mm (36x) and 10mm (91x) Kellner eyepieces
  • 2 year warranty

Celestron Australia Warranty

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was $799.95
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Celestron Cosmos 90GT WiFi Telescope

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Please note: this is a bulky item and therefore cannot be shipped internationally. Tablet shown in image is not included.

Introducing the first WiFi operated telescope!

Control your telescope through your iPhone, iPad or Android device (not included) with the free COSMOS Celestron Navigator app. The mobile app replaces the traditional telescope hand control for a 100% wireless experience. Just hold your smart device up to the night sky and when you find an object you’d like to view, tap the screen. Your COSMOS 90GT will automatically align to the object, while your screen displays information about it.

The 90mm refractor telescope has fully coated optics that ensure clear views of craters on the Moon, the rings of Saturn, the Great Red Spot on Jupiter, the Orion Nebula and so much more. The newly designed accessory tray includes storage for eyepieces along with a rubber-lined tray for your smartphone or tablet.

The Cosmos telescope emits its own WiFi connection so you don't have to worry about stargazing in an area with WiFi or mobile networks. Start up the SkyAlign technology by centering on three bright objects in the sky. Your Cosmos telescope will immeadiatly calculate it's position based on these points and then away you go! The app can even create a personalised SkyTour for you based on the best celestrial objects to view at your exact time and location.

Inspired by the FOX and National Geographic program Cosmos: A Spacetime Odyssey, this telescope comes with a StarPointer finderscope, 2 Kellner eyepieces, mirror star diagonal, free planetarium app, and Cosmic Calendar poster.


  • Optical Design: Refractor
  • Aperture: 90mm
  • Focal Length: 910mm
  • Focal Ratio: f/9.1
  • Lens Type: Achromat, doublet
  • Optical Coatings: Fully-coated antireflection
  • Eyepiece 1: 25mm Kellner (36x magnification)
  • Eyepiece 2: 10mm Kellner (91x magnification)
  • Finderscope: StarPointer red dot finderscope
  • Resolution: Rayleigh: 1.54 arcseconds / Dawes limit: 1.29 arcseconds
  • Highest Useful Magnification: 180x
  • Tripod: Adjustable-height aluminium
  • Warranty: 2 years
  • Optical Tube Length: 94.5cm
  • Total Telescope Kit Weight: 6.4kg

Mobile Device Requirements

  • Apple: iOS 7.0 or later
  • Android: Android 4.0 or later
  • Celestron Cosmos Navigator app OR Celestron SkyPortal app available from the App Store and Google Play Store


LocationEstimated Delivery Time
Metro Sydney, Melbourne, Brisbane & Canberra areas 2-4 business days
Metro Adelaide, Hobart and Perth areas 4-6 business days
Country areas 3-6 business days
Remote areas 7+ business days

For more details, please see our Delivery & Shipping page here



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