BAADER M54 SPACER RINGS AM5 The Askar 130PHQ is a

The Askar 130PHQ is a professional apochromatic flatfield Petzval quadruplet with a focal ratio of f/7

5 arc seconds PEC Yes

crisp views

If this is the case

The new Baader CMOS-optimized O-III 4nm / 6

BAADER M54 SPACER RINGS AM5 The Askar 130PHQ is aThe Baader M54 metal spacer rings are useful for fine tuning the precise backfocus distance as required by correctors, as well as preventing binding between two M54 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 BA2457921 (0. 3 mm), BA2457922