![]() I will be mounting the Celestron RASA 8 F/2 to a Celestron CGX-L computerized equatorial telescope mount, and connecting a one-shot-color astronomy camera, the ZWO ASI294MC Pro. I’ll explain how to fasten a camera to this telescope to utilize the unique RASA optical system that is based on the idea of Celestron’s original Schmidt camera. In this review, I’ll take the RASA out for a test drive in my backyard for some deep-sky imaging. This 8-Inch Celestron Rowe-Ackermann F/2 Schmidt Astrograph was generously loaned to me from High Point Scientific for review. In this post, I’ll share my experiences using a telescope that is more than twice as fast (f-ratio of F/2) as any other telescope I’ve used for astrophotography. Full frame sensor cameras that are less than 4” in diameter will work, but performance will be poor at the edges of the field. The 8” model was designed to be used with modern CCD and CMOS dedicated astronomy cameras like the ZWO ASI294MC Pro, or ASI1600MM Pro. A dedicated astronomy camera with a chip no bigger than APS-C is needed to enjoy the RASA 8. That’s right, the RASA 8 F/2 requires that you mount the camera to the telescope’s objective end. The 8″ Celestron Rowe-Ackermann Schmidt Astrograph. ![]() The size of the RASA 8 does not allow you to use it with a DSLR camera, as the camera body will obstruct too much of the corrector plate on the front of the telescope. The Celestron RASA 8 F/2 is not a visual telescope, it was designed exclusively for deep sky astrophotography. ![]() So my experiences with the RASA 8 F/2 will not only be a first in terms of this telescope design, but also the unique Rowe-Ackermann Schmidt Astrograph optical system. I should start off by saying that until now, I’ve never used an SCT (Schmidt-Cassegrain Telescope) in my life. Related Post: 10 of the Best Astrophotography Telescopes in 2022 I like to think of it as an evolved Schmidt camera for today’s amateur astrophotographer. The RASA optical system presents a modern and practical approach to extremely fast deep sky astrophotography. Based on the popular 11″ version, the 8” model is the most affordable RASA (Rowe-Ackermann Schmidt Astrograph) in Celestron’s lineup. The Celestron RASA 8 F/2 Astrograph is a modern astrophotography telescope with an optical design that allows you to collect deep sky images using short exposure times.
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