F/6.1 CCD Telecompressor Corrector for 175 f/8 StarFire EDF (175TCC)
Designed for: 175 mm f/8 StarFire EDF
Application: Digital imaging with CCD and DSLR cameras. Also suitable for video and 35mm film cameras.
175TCC and ADATCC1 on SBIG STL11000
This optimized design uses 3 elements of high-index glass to widen and flatten the field while increasing the photographic speed of the 175 StarFire EDF triplet refractor from f/8 to f/6.1. It is designed to be used with a variety of cameras when matched to the appropriate adapter.
The 175EDF operating at f/6.1 (0.76x compression) is an ideal match for large format cameras. Extreme detail can be captured in very short time thanks to the fast focal ratio. This accessory is a must for H-alpha imaging where speed and resolution allows one to achieve incredible results. Wide-field images will be highly detailed, which allows the astro-imager to make very large prints without doing time-consuming mosaics. Even when enlarged to 30 inches, a single image will still have pinpoint stars across the entire frame.
Optimal performance depends on these factors:
175TCC with Machined Aluminum Covers
When used with the recommended custom adapters, the image is fully illuminated with the recommended cameras. Only 2" round filters will present a tiny, insignificant amount of vignetting in the very corners.
|Fully Illuminated Circle||2.1" (53 mm)||2.8 degrees|
|KAF-3200||14.9 x 10 mm||0.80 x 0.54 degrees|
|KAF-8300||18.0 x 13.5 mm||0.96 x 0.73 degrees|
|APS-C||22.4 x 14.9 mm||1.20 x 0.80 degrees|
|16803||36.9 x 36.9 mm||1.98 x 1.98 degrees|
|35 mm Full Frame||36 x 24 mm||1.94 x 1.29 degrees|
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