Astro-Tech Flat Field 8mm 1.25" Eyepiece $79.99,  Astro-Tech ATFF08,Telescope Accessories Accessories, Best Buy
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Astro-Tech Flat Field 8mm 1.25

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Sale Price: $79.99
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Astro-tech Flat Field 1.25" 60 Degree Eyepiece, 8mm ATFF08

Item No. 758-20030
Manuf. No. Astro-Tech ATFF08

Astro-Tech Flat Field 8mm 1.25" Eyepiece, ATFF08

The 8mm Astro-Tech Flat Field is a very good medium high to high power eyepiece for observing lunar and planetary detail, resolving globular clusters, picking up small planetary nebulas against a stellar background, etc. It is designed to provide a very flat field that keeps the image sharply focused from one edge of its wide 60 degree field to the other.

This flat field lets you scan the lunar surface, for example, and see sharply defined craters and rilles filling the entire field, rather than having the image soften and blur disconcertingly towards the edges as you often find is the case with the curved field of conventional eyepiece designs.

The 8mm focal length of this Astro-Tech Flat Field is typically unavailable from suppliers of similar, but higher-priced, flat field designs.

This 8mm Astro-Tech Flat Field has a somewhat short eye relief that will vignette the field for eyeglass wearers. Those who must wear eyeglasses while observing due to severe astigmatism would probably be better off using a good Barlow and the 16mm focal length Flat Field eyepiece (which has a much longer 15mm eye relief) to reach this focal length, rather than buying this eyepiece for use on its own.


  • Eye Relief - 7mm
  • Focal Length - 8mm
  • Number of optical elements - 5
  • Barrel Size - 1.25"
  • Weight - 2.5 oz.
  • Warranty - 2 years

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