This CCD reducer for Ritchey-Chrétien and other F/18 to F/8 telescopes was developed for reducing the focal length of RC (Ritchey-Chrétien) telescopes. Practical tests have also shown an excellent suitability for all telescopes with flat field, like apochromats with built-in corrector lens, Celestron EHD or Meade ACF telescopes.
We especially recommend this reducer for GSO, TS Optics & AstroTec Ritchey-Chrétien telescopes.
The features of the CCD47 reducer:
- Barrel size is 2″ – easy connection to all focusers with 2″ receptacle
- With thread for 2″ filters at the telescope side
- Camera connection via M48x0.75 thread
- Optimal working distance from the connection thread: 85 mm to the camera sensor. Between 70-90 mm, the results are very good.
- Reduction by 0.67x – an RC with F/8 changes to fast f/5.3. A telescope with f/10 still turns into f/6.7. The exposure time will be more than halved.
- An illuminated image field of 29mm allows using all camera sensors up to APS-C format.
- Designed for use with the long working distance of most common cameras whether its CCD, CMOS or DSLR.
Tech Specification:
- Barrel size: 2″
- Filter thread: 2″ filter thread at the telescope side
- Camera connector: M48 x 0.75 thread (male, 5mm long)
- Body length: 29.2mm (w/o male thread)
- Working distance: Between 70-90mm – optimal results are achieved at approx. 85mm
- Factor: 0.67x
- Clear aperture: 44 mm
- Coating: Best possible coating – guaranteed no reflexes or ghost images
- Illumination at f/8: D=29mm fully illuminated
Whats included:
- TS CCD47 Reducer
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