RedCat 71 WIFD

This William Optics WIFD 71 mm APO Astrograph is a premier tool for astrophotographers. The RedCat WIFD 71 provides color-free apochromatic performance. With 4 elements in 3 groups (2-1-1- configuration), the 71 mm RedCat Petzval refractor is designed with a doublet made of FPL-53 glass up front, a single central element, and a single rear lens to provide a flat image plane without any need for an additional flattener. William Optics designed this refractor with excellent color correction and pinpoint stars, even at the edge of the 45 mm image circle. Bahtinov Mask Included with this William Optics RedCat telescope is a Bahtinov focusing mask. The Bahtinov mask is a great tool for astrophotography and modifying focus. With William Optics quality, the Innovative Bahtinov Mask Cover will help astrophotographers reach the best focus when capturing those wonderful celestial photos. Patented WIFD Focuser This new focuser design includes the patented William Optics center focuser with preci