M68 EXTENSION TUBE - 20mm flattener Geoptik transport bag for Newtonian

Geoptik transport bag for Newtonian telescopes with a diameter of Ø 200mm and a focal length of 1200mm

Length 510 mm

The PLUS 80mm support rings have 3 screws with a nylon tip for a perfect alignment with the main telescope

With liquid cooling you can get to -45C below ambient with normal temperature liquid

M68 EXTENSION TUBE - 20mm flattener Geoptik transport bag for NewtonianThis 20mm M68 extension tube features a male M68 x 1 thread on one end and a female M68 x 1 thread on the other. This is a very useful accessory for making up the exact backfocus distance required by correctors. Specifications Connection side A Male M68 x 1 Connection side B Female M68 x 1 Optical length 20 mm SKU AX M68 EXT20