Equipment
Celestron RASA C11 f/2.2 Rowe-Ackermann Schmidt Astrograph
Celestron C11 RASA f/2.2 after unpacking. The Celestron 11" f/2,2 RASA is a dedicated instrument, it can only be used at f/2.2 like a Schmidt-Camera. The RASA C11 is not a lightweight, it has a tube weight of 43 lbs (19.5 kg). 279 mm Aperture, Focal Length 620mm, f/2.2 optical design with rare-earth glass for images free of false color, coma, and field curvature 43.3 mm optimized image circle.
Celestron RASA C11 f/2.2
Celestron C11 RASA f/2.2 after unpacking with ASI183MC pro. Disadvantages... high weight, not shifting free, If necessary difficulty in collimation, often refocusing per session, focusing it at f/2.2 will be a nightmare, but, I'm assuming I'll use autofocus later. Advantages... fast saturated images, small stars, going from f/7 (C11 EdgeHD with reducer) means 10x shorter subs, pixel scale with ASI183MC pro 0.79 arcsec/ pixel fits, not oversampled.
Celestron RASA C11 f/2.2
Celestron C11 RASA with Skywatcher NEQ6 and ASI183MC pro. Unfortunately, at home I have a limited field of view due to large trees and houses of neighbors. Therefore, I can take images only about 1.5 - 2 hours, for that the RASA is right. Also, I can still carry the teleskope ;-) It is my tool for watching / searching for exoplanets or taking short exposures.
