M68 EXTENSION TUBE - 20mm flattener Length 510 mm

Length 510 mm

Each filter is tested individually to ensure a high quality standard

Precision altitude and azimuth adjustment

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

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

M68 EXTENSION TUBE - 20mm flattener Length 510 mmThis 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