Optec NextGEN WideField 0.50X Telecompressor Kit $325.00,Free Shipping,  Optec NGW,CCD Digital Camera Accessories Accessories, Top 10
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OPTEC NEXTGEN WIDEFIELD 0.50X TELECOMPRESSOR KIT NGW

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Optec NextGEN WideField 0.50X Telecompressor Kit
 
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OPTEC NEXTGEN WIDEFIELD 0.5X TELECOMPRESSOR KIT NGW

Item No. 782-23010
Manuf. No. Optec NGW

Free Shipping (within the 48 contiguous US States only)

Optec NextGEN WideField 0.50X Telecompressor Kit, NGW

The Optec NGW (Next Generation WideField) telecompressor increases the effective speed of the Meade and Celestron Schmidt-Cassegrain telescopes from f/10 to f/5. This 1/2 times reduction in focal length allows for 4 times greater field area and 1/4 reduction in exposure time for extended surface objects such as bright nebulae. The system is optimized specifically for f/10 Schmidt-Cassegrain telescopes to allow for correction of the field curvature and spherical-chromatism that afflicts these types of instruments. At f/5, the maximum corrected field has a diameter of 17.5 mm at the image plane which makes the optic suitable for CCD cameras with imaging chips of the same diagonal dimension or smaller.

Ray Tracing The optical design of the NextGEN 0.50X was done with Zemax and optimized for four field points using wavelengths of 450, 550 and 650 nm. The goal was for the smallest blur diameters for the four field points. The system was modeled using the actual optical prescription for a SCT with the inherit aberrations of this telescope. The resulting lens curvatures of this designed were made without adjusting the radii to the optical lab's tool list. Custom tools were made for all surfaces.


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