Celestron Inspire 90mm Short Refractor Telescope

SKU: 22407

The Inspire 90 is a short refractor telescope perfect for terrestrial and celestial viewing on the go. The Inspire can view the planets, moon, star clusters and brighter deep sky objects like the Orion Nebula and Andromeda Galaxy at night and with the erect image star diagonal makes the optical tube ideal for using as a spotting scope during the day.


Setting up the telescope is a breeze and will have you observing in no time. Even on your first time out, you can assemble the telescope and its accessories in just a few minutes. The adjustable tripod legs allow you to customize the telescope’s height or place it on raised surfaces like a picnic table. The total telescope kit is lightweight and perfect for impromptu observing sessions or transporting wherever life’s adventures take you.


Manual Alt-Azimuth telescope


Navigate the sky with a panning handle Alt-Az control with clutch for smooth and accurate pointing. Move the clutch in an up/down, left/right fashion to track your object in the eyepiece.


Accessories Included


The Inspire 90 comes with two eyepieces (20mm and 10mm), a 90° erect image diagonal, an integrated smartphone adapter, a finderscope, and a red LED flashlight.  The two eyepieces offer different magnifications to view your intended object. The erect image diagonal allows for right-side-up viewing ideal for terrestrial subjects but can also be used for celestial objects. The Star Pointer finderscope will help you quickly center an object in your eyepiece for easier observing. Illuminate your accessory tray with the built-in red LED flashlight. The flashlight can easily be removed from the mount to provide red light where you need it most.


Smartphone Adapter – Image celestial or terrestrial objects with this smartphone adapter! With its light, rigid frame, this accessory allows you to connect any smartphone to any telescope eyepiece with an outside diameter of 45mm or smaller. The additional magnification provided by the eyepiece allows your phone to capture great images of the Moon, planets, and terrestrial targets like birds and wildlife.  This smartphone adapter installs easily by clamping over the top of an eyepiece.  The smartphone is held in position with the help of bungee cords that securely lock your phone in place. While the vast majority of smartphones can be used with the case on, some very large and/or bulky phone cases (such as folio style cases) may need to be removed for the phone to fit in the adapter.


Starry Night Software


Download Celestron’s Starry Night Software and learn about the night sky, celestial objects, and how to plan your next observing session. Celestron Starry Night Software is the premier astronomy software package on the market, providing resources and knowledge to view our solar system and beyond. 

  • Technical Specifications

    Optical Tube Info


    Optical Design: Refractor

    Aperture: 90mm (3.54")

    Focal Length: 660mm (26")

    Focal Ratio: f/7.3

    Focal Length of Eyepiece 1: 20mm (.78")

    Magnification of Eyepiece 1: 33x

    Focal Length of Eyepiece 2: 10mm (.4")

    Magnification of Eyepiece 2: 66x

    Finderscope: StarPointer Pro

    Star Diagonal: Erect image 90° (1.25")

    Optical Tube: Aluminum

    Highest Useful Magnification: 213x

    Lowest Useful Magnification: 13x

    Limiting Stellar Magnitude: 12.3

    Resolution (Rayleigh): 1.55 arc seconds

    Resolution (Dawes): 1.29 arc seconds

    Light Gathering Power (Compared to human eye): 165x

    Optical Coatings: Fully coated glass optics

    Optical Tube Length: TBD

    Optical Tube Diameter: TBD

    Optical Tube Weight: TBD

    Dovetail: Vixen/CG-5 Dovetail bar


    Mount Info

    Mount Type: Manual Alt-Azimuth

    Height adjustment range (includes mount and tripod): 1193.8mm (47") max height

    Tripod Leg Diameter: 31.75mm (1.25") Stainless Steel

    Accessory Tray: Yes

    Slew Speeds: Manual

    Dovetail Compatibility: Vixen/CG-5 saddle plate

    Software: Celestron's Starry Night Basic Edition Software, SkyPortal App


    Included Items: Optical tube / Mount and tripod / Accessory tray / Two eyepieces (20mm and 10mm) / 90° erect image diagonal |Integrated smartphone adapter / Finderscope / Red LED flashlight


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