Orion Field Flattener for Short Refractors

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Orion Field Flattener for Short Refractors
$139.99
Item # OR-8893
OR
  • The Orion Field Flattener for Short Refractors provides excellent field correction while preserving the focal length attributes of your telescope.
  • Designed for use with refractors with focal lengths of 400mm to 650mm and focal ratios of f/5 to f/7.5.
  • The Orion Field Flattener for Short Refractors has fully multi-coated, 38mm clear aperture optics and a glare-reducing threaded interior ensure maximum image contrast.
  • Requires 55mm of refractor telescope backfocus, weighs 7.5 oz.
Description

Details

Orion Field Flattener for Short Refractors

Optically fast refractor telescopes used for astrophotography are often plagued by significant field curvature, which is especially noticeable when using CCD imagers with APS-C sized and larger sensors, or DSLR cameras. Orion's handy field flattener resolves the issue by providing excellent field correction while preserving the focal length attributes of your telescope. Designed for use with refractors with focal lengths of 400mm to 650mm and focal ratios of f/5 to f/7.5, the Orion Field Flattener for Short Refractors lets you enjoy the full imaging potential of your fast refractor telescope.

Fully multi-coated, 38mm clear aperture optics and a glare-reducing threaded interior ensure maximum image contrast. Backfocus of 55mm is required, we recommend using the Orion T-thread Spacer Ring Kit (sold separately) to achieve proper distance for use with CCD imagers. Use with a DSLR requires a T-ring for the camera (T-ring sold separately). Weighs 7.5 oz.

Orion Field Flattener for Short Refractors Features

  • Eliminate field curvature in short, optically fast refractor telescopes with this handy 38mm clear-aperture, fully multi-coated field flattener
  • Designed for use with 400mm to 650mm focal length refractors with f/5 to f/7.5 focal ratios
  • Optimizes your fast refractor telescope for astrophotography
  • Preserves focal length attributes of the attached refractor telescope while flattening the field of view
  • Requires 55mm of refractor telescope backfocus, weighs 7.5 oz.
Orion Product Number: 8893
Additional Information

Additional Information

SKU OR-8893
Manufacturer Orion
Barrel Size 2"
Warranty Orion Limited Warranty
Reviews

Customer Reviews 1 item(s)

Perfect Addition
First off, it works great! I photograph through an Orion ED80mmCFT with my DSLR- Pentax K5iiS (APS-C sensor, 23.7 x 15.7 mm). I was experiencing elongated stars near the edges of my photos and was forced to crop them. After my very first shot , I zoomed into the corner and saw excellent pinpoint stars. I am very satisfied with this flattener.
1= Houston, We Have a Problem & 5= It's Out of This World
Review by Joshua / (Posted on 7/9/2013)
Included Items

Included Items

  • Orion Field Flattener for Short Refractors
  • One Year Limited Warranty
Questions & Answers

Product Questions

I have an AT72ED will this work on it?
thank you Mike
2
hi thereĀ  this flatter but the orion short tube 80mm extender ring need to focus?
-3
hi! this will work on a equinox 66?
-5
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