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

For Celestron OTAs with the old flat backplate please use the Baader V rail / dovetail bar 470mm for SC BA2451101

Azimuth fine adjustment range

any error on each of the two components will sooner or later result in a tracking error

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