TS Optics 2" Newtonian coma corrector and 0.73x reducer for astrophotographyThis coma corrector and reducer turns your Newtonian telescope into a high-speed astrograph. The focal length is reduced and the field is corrected.Newtonian coma corrector and 0.73x focal reducer for your Newtonian telescope
This corrector increases the speed of your Newtonian telescope and corrects the Newtonian coma. The exposure times can be halved. The corrector was designed by H. Ackermann (USA).
The corrector is usable for the following Newtonian telescopesBasically, the corrector/reducer can be used with all Newtonians from f/3.5 to f/8. It has a M48 thread at the camera side. A further adaption is not problematically and can be planned to one millimetre.
The adapter shifts back the focal plane by 15-16 millimetres. This value results from the reduction factor of the reducer. You need approximately 85 mm from the 2" receptacle of the focuser to the focus to make the reducer operational. UNC and ONTC Newtonian telescopes from Teleskop Service can be prepared for the use of this special corrector.
Because of the increased speed, you have to pay attention on accurate clamping. Even minimal tilting results directly into unsharp stars at the edge.
Usable image field The design of the corrector allows for a usable field of 22 mm diameter with 100% illumination. With a little trick at focusing, this field can be extended to approx. 30 mm. Do not use a star in the middle of the field, but use a medium bright one in the outer third of the field.
Delivery contents- TS Reducer Corrector
- Dust caps
Products specifications
| Barrel size / Filter thread | 2" |
| Camera thread | 2" filter thread (M48x0.75) |
| Lenght | 56mm |
| Corrected field | 22 mm diameter - usable up to 30 mm diameter |
| Coating | Fully multi-coated |
| Filter thread | 2" filter thread at the telescope side |
| Reduction: | Focal length reduced to 0.73x |
| Working distance from the camera thread | 66.85 mm to the sensor |
