Stable and short focuser for Newtonian telescopes for DIY and upgrades. Slide focus with extension tube, fine focus with rack and additional gear reduction
♦ Load up to 8 kg without loss of rigidity - 8 ball bearings ensure this
♦ Smooth clamping via 2" brass clamping ring or 1.25" collet adapter
♦ Short Design - Only about 50-55mm from tube to top edge of 2" receptacle (depending on tube curvature)
♦ Integrated extension tube for quick and rough adjustment
♦ Rack and pinion with additional gear reduction for fine tuning
♦ No tilt when holding the focus because the adjustment axis is clamped, not the drawtube
♦ Flexible base for Newton tubes from 8" opening
♦ Solid metal construction - only the dust cap and protective cover are made of plastic
TS-Optics 2" short Newtonian focuser - load capacity up to 8 kg - rack and pinion
An ultimate focuser for Newtonian telescopes with higher load capacity and accuracy than any conventional Crayford focuser we know of. We recommend the focuser primarily to astronomers who use their Newtonian telescope for observation and astrophotography and value maximum rigidity and precision.
The advantages of the TS-Optics 2" low profile rack and pinion focuser:
♦ Maximum rigidity: the extension tube is held in place by 8 ball bearings and the extension tube is adjusted via a pinion.
♦ the extension supports up to 8 kg while maintaining maximum rigidity
♦ 2" careful clamping via brass clamping ring
♦ 1.25" precise clamping based on the collet principle
♦ Built-in coarse adjustment with 42mm extension length – ideal for visual observation when the focus position is optimized for photography. You don't need an extension sleeve.
♦ Rack and pinion adjustment with additional 11:1 reduction - adjustment range approx 23mm
♦ Short Design – From the wall of the Newton to the 2" socket, it is only 50mm high with 8" tubes and 55mm with 10" tubes.
♦ Easy fixing to existing pipes thanks to a flexible base (included)
♦ No tilt when clamping, because the clamping screw locks the adjustment axis and does not press on the extension tube
♦ solid metal construction
Especificaciones:
-- Telescope side thread: | T2 female |
-- Eyepiece side thread: | T2 male and 1.25" (with two knurled screws and brass ring) |
-- Minimum length: | 53mm |
-- Maximum length: | 63mm |
-- Focus range: | 10mm |