#17403 - NextGEN MAXfield 0.33X telecompressor for SCT
Designed specially for the classic Meade and Celestron SCT's, the NGM yields an incredible f/3.3 effective focal ratio (EFL) on native f/10 systems. When used with an f/11 classic C-14, the NGM will yield an EFL of f/3.7. Results may vary slightly depending upon the imaging train configuration. Best results will be obtained when used with a Temperature Compensating Focuser .
The second generation NGM 0.33X MAXfield telecompressor is especially well-suited for most C-mount cameras including the Mallincam Video CCD cameras.
The optical design of the NextGEN 0.33X was performed using 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.
Note that a camera specific mount is required for this focal reducer. Refer to:
https://optecinc.us/products/nextgen-camera-mounting-plates
for camera mount options.
Telescope-Side Compatibility:
- TCF-S focuser,
- Any 2-inch focuser or receiver.
Camera-Side Compatibility:
- NextGEN Camera-specific mount. See https://optecinc.us/products/nextgen-camera-mounting-plates
Optical Design with classic SCT optics:
- NextGEN MAXfield Backfocus Backfocus worksheet
- Sky & Telescope reprint "Of Pixel Size & Focal Reducers" - June 1997
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Shipping Details
- Variant: Default Title
- SKU: 17403
- Weight: 0.5 lb
- Package Dimensions : 6 X 5 X 4
- Harmonized Code: 9002.19
- Product Type: Telescope Accessory
- Brand: Optec, Inc.