ZWO FF80 APO - 80 mm f/7.5 APO Quadruplet Refractor - FF80 - On Sale! Tripod Extensions Focal Length: 28mm

Focal Length: 28mm

Dimensions: L=85mm x W=48mm

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Askar FRA500 has inherited the legacies of superior FRA- series designing

30fps12bit ADC 5496×3672 19fps3840×2160 36

ZWO FF80 APO - 80 mm f/7.5 APO Quadruplet Refractor - FF80 - On Sale! Tripod Extensions Focal Length: 28mmThe ZWO FF80 APO is a f 7. 5 APO refractor with a flat field optical design there is no need to add a field flattener to this system! It is a pleasure to work with a system that does not require a separate field flattener; it eliminates the hassle of calculating the back focus distance and figuring out which spacers you require to achieve that distance for best focus. Just add any accessories you need, focus carefully, and start shooting! The FF80 has