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TS Optics 3″ Dual Speed Crayford Focuser For Refractor Telescope. Condition is very good. I had it for a project that didn’t manage to materialize. It is a 3″ focuser for refractors, also with a drawtube to 2″ adapter and a 2″ to 1.25″ adapter. Movement is excellent. Just some light scratch marks on the drawtube and some marks on the locking screw. The focuser is to be connected to a flange or telescope tube adapter with diameter 101.5mm. The focuser also has a 11:1 fine focus knob. Some technical specifications:Free aperture: 76mm
Minimum length: 123mm
Drawtube travel: 100mm
Drawtube outer diameter: 89mm
Focusing: Coarse focuser and 1:11 transmission for fine focuser
Rotation: 360°, integrated
Weight: approx 2.1kg
Telescope side connection: Inner diameter 101.5mm
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Category: Cameras and Photography:Telescopes and Binoculars:Telescope Parts and Accessories:Other Telescope Parts
Location: Sutton Coldfield