Optec NextGEN WideField 0.5X Telecompressor Lens
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.
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 design was made without adjusting the radii to the optical lab's tool list. Custom tools were made for all surfaces
You will need to order a NEXGEN CCD Mounting Plate in order to attach this telecompressor to your CCD camera. Choose from a selection of mounting plates listed in the "Accessories" tab to your left.
If you do not see the mounting plate for your CCD camera, or you have any questions, please feel free to contact our Internet Sales Department by email or by phone at 1-800-483-6287. Thanks!
Optec Product Number: 17406
- Additional Information
SKU OP-17406 Manufacturer Optec Barrel Size Thread-on Warranty 1 Year Warranty
- Included Items
- Optec NextGEN WideField 0.5X Telecompressor Lens
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