Search results for 'william optics flattener flat6aiii 0 8x'
Askar 140 APO F/7.0 Triplet Refractor
US$ 2,405.01The Askar 140APO is a telescope (OTA) with an aperture of 140 mm, a focal length of 980 mm and a native focal ratio of f/7.Askar FRA500 90mm f/5.6 Refractor
US$ 2,137.69The best seller of the quintuplet series, the FRA500 90mm; It is an instrument suitable for astrophotography.
Thanks to the quintuplet spaced in the air, it provides a flattened field up to 44mm diagonally without the addition of further flatteners/reducers.