TS-Optics 2" Crayford Focuser with Micro Reduction for Refractor Telescopes
2" Crayford focuser provides play-free focusing during observing and astrophotography, ideal for Skywatcher and ED Apo refractor telescopes
♦ Includes adaptation to refractor tubes and adapters with an inner diameter of 86 mm
♦ Fits many Skywatcher ED refractors without an additional adapter, just measure
♦ Fits many achromatic Skywatcher refractors from 100mm aperture without additional adapter (but not e.g. BKR102 / Startravel 102), please measure
♦ 87.5mm height from telescoping focuser connection to 2" receptacle
♦ Eyepiece side connection: 2" and 1.25" barrel with compression ring
♦ The extension tube adjustment range is 74mm
♦ Large, stable ball bearings prevent the extension tube from tilting, even under heavy loads
♦ Includes 360° focuser rotation
♦ 1:10 micro reduction allows precise focusing, eg for astrophotography
TS 2" Crayford focuser with micro reduction for refractor telescopes
The Crayford focuser is well suited for observation and astrophotography with DSLRs or astrocams. We recommend the extension for accessories up to about 2 kg. The focuser is also often purchased for self-building refracting telescopes or to upgrade existing telescopes.
The focuser is especially suitable for many refractor telescopes from Skywatcher, Celestron and Orion. The connection adapter fits directly into the tube or into the reducer attached to the back of the tube. Please measure the diameter before ordering, the tube (or reducer) must have an inner diameter of 86mm.
The 1:10 micro reduction significantly improves the sharpness setting. Especially in astrophotography, sharper images are possible because the point of focus is reached exactly. But observation is also easier, you know exactly when the optimum sharpness has been reached.
Attaching the focuser to the tube:
The scope of supply of the focuser also includes a telescope adapter with an outer diameter of 86 mm. The adapter has three M4 threads at an angle of 120°. This allows you to connect the focuser to your refractor. Of course, we can also make an individual adaptation to your telescope. We will be happy to advise you.
Especificaciones:
| Operating principle: | Crayford |
| Connection telescope side: | D=86 mm connection adapter |
| Connection eyepiece side: | 2" and 1.25" receptacle |
| Weight: | approx. 860 grams with 1.25" reduction |
| Travel: | 74 mm |
| Micro-reduction accuracy: | 0.016 mm travel with a rotation of 5°. |
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