Sky-Watcher 1.25-inch Extension Tube 50 mm

Sky-Watcher 1.25-inch 50 mm extension

This extension adds 50 mm of physical spacing between a 31.75 mm push-fit focuser or accessory holder and a matching eyepiece or camera adapter. It is useful when the optical arrangement requires the accessory to sit farther out to reach focus.

Connections

The telescope-facing end is a male 31.75 mm barrel and the accessory end accepts the same nominal barrel diameter. The aluminium body provides a rigid spacer, with two retaining screws to secure the inserted accessory.

Focus requirements

The tube contains no optical elements and does not change the telescope’s focal length. Check the required outward extension and available focuser travel before choosing a spacer.

Product documentation

Compatibility notes

Exact SW0185 31.75 mm / 50 mm extension identified. Thread pitches, mass and full external dimensions are not published by the selected source.

Additional specifications