William Optics Focuser for StellaLyra / GSO RC Telescopes

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About this product

This William Optics 3.3" Rack & Pinion RC Focuser is compatible with StellaLyra Ritchey-Chrétien 10"/12"/14"/16"telescopes (and others manufactured by GSO).

This premium dual-speed focuser provides a superior focus action, an ultra-smooth fine focus knob and higher load-bearing capacity when compared to the standard focuser.

The 3.3" camera side of the William Optics RC focuser has a camera angle rotator and an M92 thread that is compatible with an optional RC flattener (not included). 

The telescope side of the focuser uses a large flange to connect the focuser to the OTA. The flange also acts as a spacer, providing more space to add a user-supplied filter wheel and/or Off-Axis Guider (OAG).

The body of the William Optics R&P focuser is an attractive black with optional blue, red or gold accents on the fine focus knob and a band that wraps around the full body of the focuser.

Fully retracted length: 150 mm

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