Celestron RASA 8" f/2 OTA is a fast, wide-field astrograph engineered for today’s astrophotographers who demand speed, clarity, and field precision. With its f/2 optics and a short 400 mm focal length, it captures sharp, deep-sky images in seconds — not hours.
- Designed for astrophotographers seeking real-time imaging and short-exposure performance
- 203 mm aperture and f/2 focal ratio allow deep imaging in a fraction of typical exposure times
- Supports live stacking and real-time views with compatible cameras and software
- Flat-field astrograph design delivers edge-to-edge star sharpness with a 22 mm corrected image circle
- Ideal for color CMOS, small CCD, and mirrorless camera systems with sensors up to 32 mm diagonal
- No autoguiding needed for many setups due to forgiving tracking demands
- Includes internal filter mount and removable optical window for advanced imaging customization
- StarBright XLT coatings on lenses and enhanced aluminum coatings on mirror increase light transmission
- Integrated air-cooling system maintains thermal stability and minimizes distortion
- Engineered for precision with dual bearing mirror stabilization for steady focusing and slewing
The RASA 8 is an accessible entry into fast imaging systems for amateurs, educators, and observatories alike. It is not compatible with DSLR + T-ring systems, but it includes camera adapters for M42 and C-mount setups. Optional adapters for Sony or Canon mirrorless cameras are available separately.
