William Optics RedCat 91 f/4.9 WIFD Petzval Refractor - T-C-91 2.3 mm Eyepieces Supporting full frame

William Optics RedCat 91 f/4.9 WIFD Petzval Refractor - T-C-91 2.3 mm Eyepieces Supporting full frameThe William Optics RedCat refractor continues to be immensely popular, but if you'd like more aperture, check out the 91 mm f 4. 9 RedCat! This beautifully designed Advanced Petzval astrograph sports five (5!) optical elements, 3 of which are made with Super ED glass for amazing image quality. This optical design produces a flat image plane on its own, with an image circle of 50 mm, without the need for a flattener. With an image circle this big, the

SKU: 90005382202 · From www.marsberger-treibhaus.de