M68 EXTENSION TUBE - 20mm flattener With liquid cooling you can

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

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

Tripod weight: 21 kg

Adapters available to connect it ARCO 3" to ESATTO focusers and to focusers with SESTO SENSO 2

M68 EXTENSION TUBE - 20mm flattener With liquid cooling you canThis 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