GSO Crayford Focuser for Refractors

This unit is designed for refractor telescopes with a 112.5mm base flange. Before purchasing, please measure the mounting flange on your current telescope to ensure it matches this diameter.

The dual-speed mechanism allows you to make coarse adjustments for initial framing and fine adjustments for critical focus. This is essential for high-magnification planetary viewing or astrophotography where precision is key.

Yes, the focuser comes with a 1.25-inch to 2-inch adapter. You can easily switch between your standard 1.25-inch eyepieces and larger 2-inch accessories.

It has a load capacity of 2.7kg. This is sufficient for most standard visual setups, including heavy eyepieces or a diagonal and camera combination, without slipping.

No, the rotation mechanism is designed to be independent of the focusing drawtube. You can rotate your eyepiece to a comfortable viewing angle without losing your focus position or introducing image shift.

Unlike standard thumbscrews that press directly against the metal barrel of your eyepiece, the brass compression ring distributes pressure evenly. This holds your accessories securely while preventing scratches or marring on your equipment.