Antares Optical SCT Focuser

This unit is designed specifically for SCT telescopes. It attaches to the standard rear cell threads found on most popular SCT models, but you should verify your telescope's rear cell thread size before purchasing to ensure a direct fit.

Yes, it is built for stability. With an 8 kg weight capacity and a helical spur gear mechanism that minimizes slippage, it is robust enough to support most standard cooled cameras, filter wheels, and heavy imaging trains without losing focus.

Standard Crayford focusers rely on friction, which can slip under heavy loads. This hybrid design adds a rack-and-pinion element to the Crayford system, providing the smooth, fine-focus movement of a Crayford while adding the positive, non-slip mechanical engagement of a rack-and-pinion.

Absolutely. The 11:1 ratio allows you to make incredibly fine adjustments, which is essential for achieving perfect focus at high magnifications or when using a camera where even a tiny turn of the knob can shift the focus point.

Yes, the focuser includes a 1.25-inch compression adapter. This allows you to easily switch between 2-inch accessories and your standard 1.25-inch eyepieces without needing to purchase extra adapters.

The focuser offers 22.4 mm of travel. Additionally, it features a built-in 43mm extension tube, giving you extra flexibility to reach focus with various optical trains or visual accessories.