M68 EXTENSION TUBE - 20mm flattener The base features SkyWatcher's Tension

The base features SkyWatcher's Tension Control System which makes it easy to adjust the amount of resistance when positioning the tube

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

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

Each filter is tested individually to ensure a high quality standard

Precision altitude and azimuth adjustment

M68 EXTENSION TUBE - 20mm flattener The base features SkyWatcher's TensionThis 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