Celestron C90 Mak Spotting Scope

Now: £165.00 (Save:  £14.00) Was:  £179.00
  (1 Review)
✓ 2 year warranty

About this product

Model:  C90maksutov
Part Number:  52268

Designed for both terrestrial and astronomical use. 

The C90 Mak is a high power telescope with Maksutov-Cassegrain optics for high resolution, high contrast views.  

The long 1,250mm focal length and 90mm aperture provides a useful 39x magnification when used with the supplied 32mm eyepiece and can be used with other 1.25" fitting eyepieces to achieve magnifications up to 180x. 

The Vixen-type dovetail includes a photo-thread so can be used with a regular photo tripod. 


  • Multi Coated Optics
  • Maksutov-Cassegrain Optical Design
  • Compact and Portable Design
  • Erect Image System for Terrestrial and Astronomical Use
  • Built-in T-Adapter threads for Ease of Adapting SLR Cameras
  • Comes with 32 mm Eyepiece, 45° Erect Image Diagonal and 8x21 Erect Image Finderscope
  • Backpack Made of Nylon

Video Tour

What's in the box

  • C90 Mak Spotting Scope
  • 32mm Eyepiece
  • 45° Erect Image Diagonal
  • 8x21 Erect Image Finderscope
  • Nylon Backpack
  • User Guide & Guarantee


Angular Field of View 1.3 °
Eye Relief (mm) 20 mm
Close Focus 15 ft (4.6 m)
Optical Coatings Multi-Coated
Camera Adaptable Yes

Downloads / Manuals

Celestron C90 Mak Instruction Manual (PDF)

Customer reviews

Average Rating (1 Review):  
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Good but not the best
Monday, 20 August 2018  | 

I bought this spotting scope as part of my bird watching hobby, and also for use at spotting ships in the harbour. This spotting scope has many strengths. It has very good optical quality without any colour aberration because of the catadioptric technology. It is lightweight and comes in a nice bag, which protects the scope and the accessories. The scope fits nicely on any quality tripod with a camera screw mount - I use an RSPB AN tripod. Because the underlying technology is an astronomical telescope this meant that I could also use it as a telescope for lunar and planetary observations.

There are a couple of problems, though. The scope is screwed together, like the astronomy telescope that it really is, and feels a little bit fragile. It is also not sealed against moisture and mold, as a quality scope would be. Except for the cheapest examples, all traditional refractor spotting scopes are sealed and nitrogen purged, keeping out moisture and mold. This is not the case with this spotting scope. I have been warned about a possible mold problem in the future, although in the year that I have owned it I haven't had any problems. The moisture issue is also there, and unlike astronomy it is entirely possible that you will do bird watching when it is raining.

Ultimately, I think it has proved to be good value for money. A refractor spotting scope with high quality lenses would cost about twice as much.


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Q1. Is the C90 Mak Spotting Scope in effect a version of the 90mm Maksutov telescope that you also sell?

Yes, they have the same optics.

Q2. Is the C90 Mak Spotting Scope waterproof?

No. It is designed for outdoor use but is not waterproof.

Q3. Is there a recommended tripod for normal daytime use?

Celestron's own AstroMaster tripod will work well: