Accessories for Cassegrain and Ritchey-Chrétien Systems

Cassegrain accessories

Image flatener corrector for the Cassegrain secondary focus	70mm two lens Keller corrector for the secondary focus f/9 for image flatening in coated aluminum.
4" Cassegrain Reducer Corrector 0.72x	The 0.72x reducer corrector was designed to illuminate the large modern day CCD chips such as the 4x4k 16803 chips nearly vignetting-free. The corrector offers ample back focus to 90mm, enough to accommodate most common cameras and filter wheels. The corrector can be used for all system rations of f/8 and slower. The useable diagonal is 53mm.
Cassegrain Prime focus option f/3 with electrical focuser.	The prime focus option f/3 is useful for fast speeds and huge fields of view. The prime focus is permanently installed in front of the secondary mirror and by removing the secondary in its holder you allow the light path to reach the prime focus. Switching between the 2 focal configurations will only take 1 minute.

Image field flatener corrector for the RC secondary focus f/8	Image field flatener corrector for the RC secondary focus f/8.
4" RC Reducer Corrector 0.70x	The ASA 0.70x reducer corrector was designed to illuminate the large modern day CCD chips such as the 4x4k 16803 chips nearly vignetting-free. The corrector offers ample back focus of 90mm, enough to accommodate most common cameras and filter wheels. The corrector can be used for all Ritchey-Chrétien system ratios of f/8 and slower. The useable diagonal is 60mm.

Image field de-rotator	Including software module for integration in Autoslew telescope control software.
Camera-Adapter (custom design).	Custom CNC Maschined aluminum adapter with protecive coating. Price range depending on complexitiy.
Remote mirror cover with ACC software controlling	The cover will protect the primary mirror when not in use. The cover comes in two parts with controller software module integrated into Autoslew telescope control software.
Main and secondary mirror heating system	Including hardware controller and software module for the integration with Autoslew telescope control software.
Telescope controller box	Double cased electrical controller for optional mirror heating, temperature sensors, electric main mirror cover, focusers, rotators and rotafok. Inlcuding software module for integration with Autoslew telescope control software.
Primary focus with electric focuser
Primary and/or secondary mirror coating up to 97% reflectivity
Mirror material Zerodur
Cooling fans – back and side
Different focal ratio
400mm packaging	Flightcase or wooden box for world-wide delivery including insurance.
500mm packaging	Flightcase or wooden box for world-wide delivery including insurance.
500mm packaging	Flightcase or wooden box for world-wide delivery including insurance.