Celestron C90

Manuals and User Guides for Celestron C90. We found 3 manuals for free downloads Manual, instruction manual, User manual

Below you will find brief information for Mak C90. This spotting scope offers erect image viewing, a 90° eyepiece barrel, and a built-in finderscope for easy target acquisition. It supports both astronomical and daytime use via a flip mirror, with multi-coated optics for clear, sharp images. The compact design includes a focusing knob for precise adjustments, making it ideal for nature observation and stargazing.

Key Features

  • Erect image viewing for easy use

  • 90° eyepiece barrel for comfortable viewing

  • Built-in 8x21mm finderscope for target alignment

  • Flip mirror for dual viewing modes (90° or diagonal)

  • Multi-coated optics for enhanced clarity

  • Compact design with 20ft near focus

Celestron C90 Manual

Brand: Celestron Category: Telescopes Size: 665 KB

Languages: English

Open manual

Other manuals and documents

16 Pages

instruction manual

Languages: English

15 Pages

User manual

Languages: German, English, Spanish, ...

Frequently Answers and Questions

How do I install the eyepiece for astronomical use?

Loosen the thumbscrew on the 90° eyepiece barrel, slide the eyepiece in, and tighten the thumbscrew to secure it.

How do I align the finderscope?

Point the scope at a distant object, center it in the main optics, then adjust the finder screws until the crosshairs align with the target.

Can I attach a camera to this spotting scope?

Yes, using an optional T-adapter and T-ring, you can attach a 35mm camera to the rear cell for photography.

Questions & Answers

2025-12-12

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How do you focus the C90 spotting scope?

To focus the C90 spotting scope, turn the focusing ring on the body until the image is sharp. For objects located closer, turn the focusing ring clockwise, and for objects located further away, turn it counter-clockwise. On C90 rubberized models, focus by turning the front part of the objective lens.

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