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

    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

    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


    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


    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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