0.75X Focal Reducer for RC GSO Telescopes 0.75x focal reducer designed for GSO Ritchey-Chrétien telescopes. Expands the field of view and reduces exposure times in astrophotography.
GSO 2" 4-Element Photo-Visual Coma Corrector The GSO 2" 4-element photo-visual coma corrector, designed for fast Newtonian telescopes (f/4–f/5), minimizes coma and field curvature. Ideal for both visual and photographic use, it ensures sharp, distortion-free images across the entire field.