RC Optical Systems - Fixed Instruments Adapter

Astro Physics .67x Telecompressor...

By Astro Physics...
Originally developed to tame the focal length of our 10" F14.6 Mak-Cass, this telecompressor will provide full coverage of the ST10E chip with scopes ranging from F7 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. Please review the exploded diagram to see how this item will fit into your imaging system.

Clear aperture is 1.75", designed to screw into the front 2” nosepiece of the SBIG CCD camera systems.
0.67x Compression ratio for SBIG ST7/8/10 + Color Filter Wheel.
0.75x Compression ratio for SBIG ST7/8/10 (without Color Filter Wheel).
Approximately 5 inches of back focus is needed to achieve focus on the CCD chip.

Astro Physics CCD Telecompressor (CCDT67)
ITEM:	PRICE:
Part #CCDT67	$148.00

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