TS-Optics 2" Dual Speed Crayford Focuser for Newtonian Telescopes
The 2" Crayford focuser allows focusing free from play and is suitable for observation and astrophotography.
- With the optional base, the extension can be adapted to Newtonian telescopes.
- Adaptation to the base via a dovetail ring, which tapers conically, so that the focuser cannot tilt.
- 65 mm overall height from the underside (dovetail ring) of the focuser to the 2" receptacle
- Connection on the eyepiece side: 2" and 1.25" receptacle with compression ring
- Focuser travel 35 mm
- Largely dimensioned and stable ball bearings prevent the draw tube from tilting even under higher loads
- 1:10 micro-reduction (dual speed) enables precise focusing, for example for astrophotography
TS 2" Dual-Speed Crayford Focuser for Newtonian Telescopes
The Newtonian focuser is well suited for observation and astrophotography with DSLR or astro cameras. We recommend the focuser for accessories up to approx. 2 kg. The focuser is also often bought for the self construction of Newtonian telescopes or for the improvement of existing telescopes.
The 1:10 dual-speed micro-reduction significantly improves focusing. Particularly in astrophotography, sharper images are possible because the focus is precisely reached. But observation also becomes easier, as you know exactly when optimum sharpness has been achieved.
Attaching the focuser to the tube
The focuser has a conical dovetail ring with a diameter of roughly 78 mm on the bottom side. The focuser fits directly to the different bases. So you can easily adapt the focuser to your tube.
Technical Data:
| Operating principle: | Crayford |
| Payload: | 2 kg |
| Connection telescope side: | D=78 mm dovetail ring |
| Connection eyepiece side: | 2" and 1.25" receptacle |
| Drawtube diameter: | 58 mm |
| Drawtube travel: | 35 mm |
| Micro-reduction accuracy: | 0.016 mm travel with a rotation of 5° |
| Weight: | approx. 750 grams with 1.25" reduction |
In the box:
- TS 2" Crayford focuser
- Reduction from 2" to 1.25"
- The base is optional