Fast Astrographs

279mm (11") Rowe-Ackermann Schmidt Astrograph Extremely Fast f/2.2 Focal Ratio 620mm Focal Length for Wide-Field Imaging 43.3mm Optimized Image Ci...

355.6mm (14") Rowe-Ackermann Schmidt Astrograph Optical Design Ultra-fast 790mm focal length at an f/2.2 focal ratio Covers a 60.1mm image circle,...

203mm (8") Rowe-Ackermann Schmidt Astrograph Incredibly Fast f/2.0 Optical System 400mm Focal Length for Wide-Field Views 22mm Optimized Image Cir...

203mm (8") Rowe-Ackermann Schmidt Astrograph Incredibly fast f/2.0 optical system with 400mm focal length Advanced VX computerized German equatori...

152mm (5.98") Rowe-Ackermann Schmidt Astrograph Ultra-fast f/2.2 focal ratio with 335mm focal length Advanced VX computerized German equatorial mo...

203mm (8") f/2.0 Rowe-Ackermann Schmidt Astrograph 400mm focal length for ultra-wide deep-sky fields CGEM II mount provides a 40 lb instrument cap...

279mm (11") Rowe-Ackermann Schmidt Astrograph Fast f/2.2 focal ratio and 620mm focal length 43.3mm optimized image circle, excellent performance u...

203mm (8") Rowe-Ackermann Schmidt Astrograph Ultra-fast f/2.0 optical system with 400mm focal length 55 lb capacity computerized German Equatorial...

279mm (11") Rowe-Ackermann Schmidt Astrograph Ultra-fast f/2.2 focal ratio for reduced exposure times 620mm focal length for wide-field imaging 43...

152mm (5.98") Rowe-Ackermann Schmidt Astrograph Ultra-fast f/2.2 focal ratio for extremely short exposures 335mm focal length ideal for wide-field...

125mm (4.9 inches) Honders Advanced Catadioptric Optics Extremely Fast f/2 Focal Ratio 250mm Focal Length for Wide-Field Imaging 16mm Image Circle...

190mm Maksutov-Newtonian Optical Design 1000mm Focal Length f/5.3 Focal Ratio 64mm Secondary Mirror 2" Dual-Speed Crayford Focuser 12.5 kg OTA Wei...