TS Optics CCD telecompressor for Ritchey-Chrétien and other F/18 to F/8 telescopes
The telecompressor was developed for reducing the focal length of RC (Ritchey-Chrétien) telescopes for example by GSO, TS Optics, and AstroTec. 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, thus the most flat-field telescopes. Features
Barrel size is 2", easy connection to all focusers with 2" receptacle
2" filter thread 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 turns into F/6.7. The exposure time will be more than halved!
An illuminated image field of 29 mm allows using all camera sensors up to APS-C format.
With the long working distance, adaptation of all common cameras, no matter whether CCD or DSLR, is possible without any problems. The use of accessories like off-axis guiders and filter wheels is possible, too.
Reduces the focal length of telescopes with the factor 0.67x, thus allowing shorter exposure times.