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  1. Tele Vue 0.8X reducer/photographic field flattener for TV-85/Pronto

    $353.00
    Sky & Telescope called this TeleVue 0.8X reducer/field flattener lens "a must-have for someone planning to use the TV-85 photographically." Even better, it can work its image-improving magic with any brand of 400mm to 600mm refractor . . .
  2. Astro-Tech Schmidt-Cassegrain f/6.3 Focal Reducer Field Flattener

    $89.95

    This combination f/6.3 focal reducer/corrector lens reduces the focal ratio of all Celestron 5" through 14" Schmidt-Cassegrain telescopes, as well as all Meade 8" through 16" SCTs . . .

  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. Sky-Watcher 0.85x Focal Reducer/Corrector for Pro 80 ED APO Telescope

    $370.00
    .85x Reduction For Your Sky-Watcher Pro 80 ED APO Refractor Helps Correct Distortion Out to the Edge of the Field Requires a 48mm T-Ring
  5. Sky-Watcher 0.85x Focal Reducer / Corrector For Pro 100 ED APO Telescope

    $380.00
    .85x Reduction For Your Sky-Watcher Pro 100 ED APO Refractor Helps Correct Distortion Out to the Edge of the Field Requires a 48mm T-Ring
  6. Sky-Watcher 0.85x Focal Reducer/Corrector for Pro 120 ED APO Telescope

    $395.00
    .85x Reduction For Your Sky-Watcher Pro 120 ED APO Refractor and 150ED Refractor. Helps Correct Distortion Out to the Edge of the Field Requires a 48mm T-Ring
  7. 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

  8. Astro-Tech .8x Reducer Field Flattener For the 72EDII Optical Tubes

    $139.95
    Looking to make your Astro-Tech (or variant) scope faster and flatter for photography? Then the .8x reducer/flattener is exactly what your are looking for.
  9. Astro-Tech .8x Reducer Field Flattener For the 60ED Optical Tubes

    $139.95
    Looking to make your Astro-Tech (or variant) scope faster and flatter for photography? Then the .8x reducer/flattener is exactly what your are looking for.
  10. Astro-Tech 0.8x reducer/field flattener for Astro-Tech AT115EDT triplet apo refractor Version II

    $199.95
    This economical 0.8x focal reducer and field flattener is designed specifically for astrophotography with the Astro-Tech AT115EDT 115mm f/7 triplet apo refractor. 
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