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Astro-Physics CCD Telecompressor (.67)

5.0 out of 5 stars
1 customer reviews

Price: $189.00

  • Manufacturer: Astro-Physics
  • MPN: CCDT67
  • SKU: CCDT67
  • Availability: In-Stock - Available at warehouse ships in 1-2 weeks

Astro-Physics CCD Telecompressor for SBIG CCD Cameras (.76).

Clear aperture is 1.75". Compression ratio is 0.67x with SBIG ST7/8/10 + Color Filter Wheel installed, 0.75x without the Color Filter Wheel. Suitable for telescopes with focal lengths of f7 to f18 including Maksutov-Cassegrains, Schmidt-Cassegrains, Ritchey-Cretiens, and refractors.

Originally developed to tame the focal length the Astro-Physics 10" F14.6 Mak-Cass, this telecompressor will provide full coverage of the ST10E chip with scopes ranging from F9 to F18 focal ratio. The 2-element cemented design transmits close to 99% of the incoming light over the range of 420 to 700 nm. The field is compressed by 0.67x (when using a Color Filter Wheel) allowing full corner-to-corner illumination of the ST10E chip with most catadioptric telescopes. This design does not add coma to the wavefront, and thus can be used with all flat-field and coma-free telescopes such as Maks, Ritchey-Cretiens and refractors. The inherent resolution of the telescope is not compromised when using this compressor

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Most Helpful Customer Reviews

AP .67 Telecompressor

By Jeff Bennett on October, 17th 2009

I think I finaly found the best telecompressor for use with my set up. I have an SBIG ST-2000XCM, Meade 12 RCX (f/8). While the Meade 6.3 and 3.3 both seemed to work--getting focus was tough. The AP .67 shows no coma edge to edge and provides a full fram flat field for easy focus at f/5.34. With the bader planetarium adapters (from AP) the AP .67 screw right onto the nose piece for easy insertion into my VanSLyke focuser. SO far, I like it.

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