TPO Crayford Focuser

This focuser is designed specifically for refractor telescopes with a 2-inch drawtube interface. Before purchasing, confirm that your telescope's rear cell has a compatible mounting flange or connection point to accept a standard 2-inch focuser.

The 10:1 gear ratio allows you to make extremely minute adjustments to your focus, which is essential for high-magnification planetary viewing or astrophotography. It eliminates the 'overshooting' that often happens with standard single-speed focusers, helping you lock in the sharpest possible image.

No, the rotation mechanism is independent of the focusing drawtube. You can rotate your camera or eyepiece to frame your target perfectly without altering the focus point you have already established.

Yes, the combination of the 10:1 fine focus and the 360-degree rotation makes this a strong choice for astrophotography. The smooth Crayford design also minimizes image shift, which is critical when tracking celestial objects over long exposures.

Crayford focusers rely on friction rather than rack-and-pinion gears, so they are generally low maintenance. If you notice any slippage over time, you can typically adjust the tension screw on the underside of the focuser body to restore the desired level of resistance.