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

Focal Length: 28mm

49 arc seconds Light Gathering Power (Compared to human eye) 1127x Secondary Mirror Obstruction 3

including smartphones

Dimensions: L=85mm x W=48mm

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