FF130 Quadruplet APO

The ZWO FF130 is a 130mm apochromatic quadruplet refractor with a focal length of 1000mm and focal ratio of f/7.7, featuring quadruplet lens construction that eliminates chromatic aberration to produce pinpoint stars. This air-spaced quad refractor uses a 3+1 lens structure with two pieces of extra-low dispersion (ED) glass to produce a flat field, eliminating the need for a stand-alone flattener. The telescope supports full frame and medium format cameras with a 60mm imaging circle, making it an exceptional choice for wide-field deep-sky astrophotography. With its precision-engineered Petzval optical design and integrated field flattening, the FF130 eliminates coma, astigmatism, and field curvature across the entire imaging plane, delivering pinpoint stars edge-to-edge without complex spacing calculations.