WebThe William Optics RedCat71 is a 71-mm f/4.9 refractor that features a 350mm focal length for fantastic widefield images of the night sky. The optical design is a Petzval design with a doublet front element incorporating FPL-53 glass, plus a single central element and a single rear lens. By using this four-element Petzval design, our WO ... WebJul 21, 2016 · It seems like RedCat 71 will be f/4.9, approximately 350mm fl. There is a bigger cat in the works as well and that is RedCat 91 with f/3.9 ratio. All of this …
William Optics RedCat 71 APO 350mm f/4.9
WebThe RedCat 71 is the perfect Apochromatic refractor for photographic astronomers demanding excellence in a small sized telescope. Note that RedCat 71 is an imaging-only scope and cannot currently be used for visual observing. ... Aperture: f/4.9. Flattener Petzval Flat Field Focuser: Helical Focuser with 2GT Gear Ring. Color: Red. Lens Material ... WebGH5 Settings:Profile: HLGSharpening: -3 (Had to decrease the sharpening effect to avoid Moire Effect on the feather.)Saturation: -2Hue: 0Redcat 51: http://kc... naics code for dialysis center
William Optics Redcat - Ontario Telescope
WebWith focal ratio of f/4.9, the RedCat 51 also makes a superb camera lens for birders and wildlife and nature photographers. The apochromatic optics are razor sharp and free of false color, much better than most camera lenses. With a weight of just 1.47kg, the RedCat is easy to use hand held. WebApr 27, 2024 · William Optics RedCat 71 APO By FLO, March 3. 0 replies; 59 views; FLO; March 3; William Optics v1.5 RedCat 51 APO f/4.9 By FLO, March 6. 0 replies; 46 views; FLO; March 6; William Optics v1.5 RedCat 51 APO f/4.9 By FLO, March 5. 0 replies; 39 views; FLO; March 5; William Optics v1.5 RedCat 51 APO f/4.9 By FLO, ... WebRedCat 71 APO 350mm f/4.9. Black-CAT Mount for Redcat71 and EAF. $109.99. ... William Optics - Redcat 51 F/4.9 Petzval Refracting Telescope - Version II. In Stock. Select Options. Quick View. Black-CAT Mount for Redcat71 and EAF. $109.99. In … meditation and relaxation videos