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Celestron · Schmidt-Cassegrain

Celestron NexStar Evolution 9.25

74Very Good

Serious aperture, smart technology, ready to use the night you unbox it

Schmidt-CassegrainAlt-AzGoToTrackingWiFi

Price updated Apr 18, 2026

Performance Scores

Value
50
Beginner
38
Astrophoto
50
Portability
35
Planetary
74
Deep Sky
61

Overview

The NexStar Evolution 9.25 is a 235mm Schmidt-Cassegrain that gives you enough light-gathering power to resolve globular clusters, track down faint galaxies, and pull serious detail from planetary surfaces. The 2350mm focal length at f/10 makes it particularly strong on the Moon, planets, and tighter deep-sky targets, though wide-field views of large nebulae will require patience with eyepiece choices. The built-in GoTo mount handles alignment and automatically slews to thousands of objects, which is genuinely useful for observers who want to spend time looking rather than star-hopping.

Tracking keeps objects centered as Earth rotates, a real advantage when you are sketching, sharing views with others, or pushing magnification on planetary detail. Celestron's StarBright XLT coatings improve light transmission across the optical path, which matters with a design that passes light through multiple optical surfaces. At roughly 22kg total, this is not a grab-and-go setup, but it is manageable for a dedicated observing spot or car transport.

The alt-az mount is simpler than an equatorial for visual use, though astrophotographers should note it is not optimized for long-exposure imaging without additional hardware.

At a Glance

235mm

Aperture

f/10

Focal Ratio

21.77kg

Weight

2350mm

Focal Length

Specifications

Aperture235mm
Focal Length2350mm
Focal Ratiof/10
Optical DesignSchmidt-Cassegrain
Mount TypeAlt-Az
GoToYes
TrackingYes
Weight21.77 kg
Smart TelescopeNo
CoatingMulti-Coated

Key Features

  • 235mm aperture gathers enough light to show detail in globular clusters and resolve structure in brighter galaxies
  • Integrated GoTo system with motorized tracking lets you locate and follow objects automatically from the first night
  • Built-in WiFi connects to Celestron's SkyPortal app, so you can control the telescope from your phone without a hand controller
  • StarBright XLT multi-coatings applied to both lenses and mirrors improve overall light transmission compared to standard coatings
  • Schmidt-Cassegrain design folds a long focal length into a compact tube, making storage and transport more practical than a Newtonian of equivalent aperture
  • Alt-az GoTo mount is well-suited to visual observing but limits deep-sky astrophotography to short exposures without a wedge accessory
  • Internal battery eliminates the need for external power sources during field sessions, reducing setup complexity

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