ZWO FF70 - 70mm f/7 Flat Field APO Refractor - FF70-APO Bahtinov Masks OIII and blue spectrum from

OIII and blue spectrum from the background light pollution

Universal corrector that tightens and intensifies star images on all f-ratios down to f/3

Viewing through Nature DX ED is comfortable for both eyeglass wearers and non-eyeglass wearers

System Wavelength: 656

59 arc seconds

ZWO FF70 - 70mm f/7 Flat Field APO Refractor - FF70-APO Bahtinov Masks OIII and blue spectrum fromZWO FF70 APO Flat Field Apochromatic Refractor Main Features Flexible Connectivity for Multiple Configurations Lightweight & Compact The ZWO FF70 APO features a 70 mm aperture and 490 mm focal length (f 7. 0), offering an excellent balance between portability and performance. The optical tube weighs just 2. 5 kg, with a total system weight of 3 kg including mounting rings and dovetail plate. Four Element Optical Design The FF70 APO features a four