4 Item(s)
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  1. Tele Vue large field corrector for CCD imaging with NP-101is/NP-127is

    $300.00
    This auxiliary lens optimizes the edge of field performance with 35mm CCD chips and larger on the NP-101is and NP-127is . . .
  2. Astro-Tech 2" Field flattener for imaging with Astro-Tech and TMB refractors

    $149.95
    The Sky & Telescope Hot Product for 2010 Astro-Tech 2" photographic field flattener improves the image sharpness at the corners of the field with Astro-Tech and TMB apo refractors, but will also work well with any other brand of f/6 to f/8 refractor, as well as Astro-Tech Ritchey-Chrétiens . . .
  3. Astro-Tech AT152EDT .72x Reducer Field Flattener

    $299.00

    The Astro-Tech AT152FF 0.72x focal reducer/field flattener is designed specifically for prime focus astrophotography with the AT152EDT triplet refractor.

  4. Celestron .7x Reducer Lens for The EdgeHD 925

    $429.00

    The EdgeHD .7x Focal Reducer Lens makes your EdgeHD 9.25" one full F-Stop faster than f/10, reducing your exposure time by half to capture the same brightness of object
    4-element lens design
    Maintains similar flat-field performance as native EdgeHD optical design
    Increases field of view by 43% to better capture wide field images
    Threads directly onto the 3.25" threads of the EdgeHD which reduces mechanical vignetting and allows for use with larger (full frame) sensors and Off-Axis Guiders
    Maintains the identical back focus when used at f/10 and provides generous back focus to accommodate additional accessories and wide variety of cameras
    Allows use of existing EdgeHD T-Adapters with or without the Reducer Lens

4 Item(s)
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