Celestron RASA 8”: The Fast, Compact Astrograph for Deep Sky Astrophotography
Let yourself be seduced by the Rowe-Ackermann Schmidt Astrograph (RASA) 8”, a revolutionary telescope designed to capture wide-field images of the deep sky with exceptional quality. Lightweight, portable and high-performance, this ultra-fast f/2.0 astrograph is the perfect tool for astrophotographers using color CMOS, compact CCD or hybrid cameras.
A Design Specifically Conceived for Astrophotographers
- Optimized for imaging only thanks to its focal plane at the front of the optical system.
- Ideal for : Astronomical color CMOS cameras, Compact CCD cameras, Hybrid (mirrorless) cameras with APS-C sensors.
- Sensor compatibility : Ideal for sensors up to 22 mm diagonal. Can work with sensors up to 32 mm, but with reduced edge-of-field illumination. Not recommended for conventional DSLRs or cameras over 4" in diameter.
Exceptional speed at f/2.0
- Much shorter exposure times than conventional telescopes.
- Combined with a sensitive camera and live stacking software, it offers an experience akin to real-time observation.
- Bright, detailed images appear directly on your computer.
High-precision optics
- Flat field : Eliminates aberrations such as field curvature, coma, astigmatism and chromatic aberrations.
- Extended spectrum : Performs over a wavelength range from 400 to 800 nm, guaranteeing sharp images throughout the visible spectrum.
- Light pollution filter : Integrated via an internal filter system for effective light pollution reduction.
Advanced Technologies for Optimal Performance
- Ultra-Stable Focus System (USFS): Reduces “focus shift” and “mirror flop” thanks to a linear ball bearing, ensuring precise, reliable focusing.
- Integrated cooling system : MagLev fan (12V DC) for rapid warm-up and optimum ventilation.
Portability and compatibility
- Weighing just 7.7 kg, it is designed to be easily transported to the best observation sites.
- Compatible with a wide range of equatorial mounts thanks to its robust CGE mounting rail.
Various applications
- Mosaics of the night sky : Create large mosaics to capture the whole sky.
- Exploring the deep sky : Ideal for observing nebulae, galaxies and other extended objects.
- Astronomical readings : Perfect for detailed surveys and comet hunting.
Accessories Included
- C-mount and M42 adapters for CMOS/CCD cameras.
- Internal filter system.
- Integrated cooling fan.
Conclusion
The RASA 8” offers an affordable entry into the world of fast, wide-field astrophotography. Discover the universe with bright, detailed and incredibly precise images, and push back the boundaries of your celestial explorations.
