Celestron RASA 8" Schmidt Astrograph OTA

Discover the Celestron 8" RASA Astrograph Telescope, a cutting-edge solution for wide-field astrophotography and a top choice among astronomy enthusiasts, observatories, and professional imaging setups. Engineered with the renowned Rowe-Ackermann Schmidt Astrograph (RASA) design, this lightweight and portable astrophotography telescope weighs just 7.7kg, making it ideal for both mobile imaging rigs and permanent installations. Its ultra-fast f/2.0 focal ratio delivers exceptionally bright, sharp, and high-resolution deep-sky images, making it one of the most efficient imaging systems available for modern CMOS astrophotography cameras, mirrorless cameras, and compact CCD sensors.

Premium Imaging Performance for Deep-Sky Photography

The Celestron 8" RASA sets a new standard for flat-field wide-angle astrophotography, eliminating common optical distortions and producing crisp, pinpoint stars across the entire field. Built as a more accessible alternative to larger astrographs, this model brings professional-grade imaging quality to astrophotographers of all levels. Inspired by the success of the RASA 11, this more compact version expands Celestron’s signature optical innovation to a broader audience seeking exceptional performance at a competitive price point.

Feature-Rich Design for Serious Astrophotographers

This advanced astrophotography optical tube assembly (OTA) features:

• Integrated air-cooling system for optimal thermal stability
• Internal filter mount for seamless filter use
• CGE-compatible dovetail mounting bar for reliable telescope mounting solutions
• Front-mounted prime focus imaging design, optimised exclusively for cameras (not compatible with traditional eyepieces)

Every element is engineered for imaging precision, making the RASA 8 one of the most efficient fast astrographs on the market.

Ultra-Fast f/2.0 Optics for Short Exposures & Real-Time Imaging

With its blazing-fast f/2.0 optical system, the Celestron RASA 8" drastically reduces exposure times which is perfect for capturing faint nebulae, star clusters, and galaxies with exceptional clarity. When paired with sensitive color CMOS cameras and live-stacking astrophotography software, users can enjoy a near real-time deep-sky viewing experience. Images appear instantly on-screen with brightness and detail surpassing many larger, slower telescopes.

Portable, Lightweight & Mount-Friendly

Featuring a compact 400mm focal length, this astrograph places minimal demands on equatorial tracking, often eliminating the need for an autoguider. Its lightweight design allows compatibility with a wide range of mid-range and advanced telescope mounts, making it ideal for both backyard setups and mobile astrophotography systems.

Precision Focusing With Celestron's Ultra-Stable Focus System 

The Celestron 8" RASA Astrograph incorporates an advanced ultra-stable focusing mechanism designed to reduce primary mirror shift during focusing, slewing, and tracking. Precision guidance bearings ensure smooth, accurate focusing which is critical for long-exposure imaging and high-resolution astrophotography. This enhanced stability makes the focusing process more reliable and easier to master.