BAADER M68 SPACER RINGS BF24A measure the exact coordinates by

measure the exact coordinates by a process called “plate solving” and feed the coordinates back to the mount

06 arc seconds Stellar limiting magnitude 13

Chromatic aberration diagram

Length of the M69 thread

This flange can be clamped between the male and female threaded parts of every T-2 (M 42x0

BAADER M68 SPACER RINGS BF24A measure the exact coordinates byThe Baader M68 metal spacer rings are useful for fine tuning the precise backfocus distance as required by correctors, as well as preventing binding between two M68 threaded parts. The spacer rings are anodized for durability and colour coded for easy identification. Available in 0. 3mm (black), 0. 5mm (red) and 1mm (gold) sizes. Specifications Optical length 0. 3, 0. 5 & 1 mm Material Anodized aluminium Weight 2 g SKU BA2458255 (0. 3 mm), BA2458256