11" RASA V2 OTAFast, wide field 11 f 2. 2 optical design with rare earth glass for images free of false color, coma, and field curvature Large 43. 3mm optimized image circle maintains pinpoint stars to the far corners of even the largest astroimaging sensors, while the usable field extends even further to 52mm for larger format sensors New Ultra Stable Focus System (USFS) minimizes focus shift and mirror flop Integrated air cooling system features a quiet, high
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