TS-Optics 2" Crayford Micro Reduction Focuser with SC Threaded Connection

TS 2" Crayford focuser with micro reduction for Schmidt-Cassegrain telescopes

Setting the sharpness in Schmidt-Cassegrains is often a problem. The image wobbles when the main mirror is tilted. Also, the sharpness is adjusted from time to time, often making optimal photos or successful observations a gamble.

Our SC extract solves this problem. It is absolutely shift-free thanks to the Crayford friction principle and impresses with its excellent finish. The focus resistance is adjustable so that accessories weighing up to 2 kg can be properly focused.

360° rotation:

Position the camera or eyepiece in the correct orientation without loosening the clamps. With an off-axis guide, simply locate the guide star without loosening the camera. This allows a 360° rotation. Simply loosen the thumb screw on the front of the focuser and you can easily rotate the entire focuser.

The clamp:

The 2" fittings are attached with a brass ring. Of course, the price includes a high quality 1.25" reduction with thread for 2" filters.

The adjustment range:

The adjustment range is about 25mm, that's more than enough. One roughly adjusts the focus with the main mirror, all other fine adjustments can be made with the focuser.

Danger:

The focuser only works on telescopes with an aperture of at least 8" otherwise the focus knob is too close to the thread to allow assembly.

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