ASKAR 203APO f/7 TRIPLET REFRACTOR Free_Shipping 2 TOA-645 flattener backfocus distance

2 TOA-645 flattener backfocus distance 73

2 x M4 locking screws Inner diameter / clear aperture 50

The ZWO FF65 is a professional apochromatic flatfield Petzval quintuplet with a focal ratio of f/6

25" barrel 24 mm Length of 2" barrel 21 mm Diameter 55 mm Weight Varies for each focal length SKU BA2454200

M68 BA2459118 - for cameras with male M68 x 1 threads

ASKAR 203APO f/7 TRIPLET REFRACTOR Free_Shipping 2 TOA-645 flattener backfocus distanceThe Askar 203APO is an apochromatic air spaced triplet refractor that offers high performance for a low price compared to other large 8" triplets on the market. The objective lens features an element of extra low dispersion glass (ED) that minimizes chromatic aberration. The Askar 203APO has a 20% larger effective aperture area than the 185APO, giving greater light gathering power, resolution, brightness and contrast. Askar will soon release a