Astro-Tech 8mm 70 Degree field AF Series Eyepiece, with dual 1.25" and 2" barrels $119.99,  Astro-Tech ATAF7008,Telescope Accessories Accessories, Famous Brand
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Astro-Tech 8mm 70 Degree field AF Series Eyepiece, with dual 1.25

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Sale Price: $119.99
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Astro-tech AF70 1.25" 70-degree eyepiece 8mm ATAF7008

Item No. 758-20010
Manuf. No. Astro-Tech ATAF7008

Astro-Tech 8mm 70 Degree field AF Series Eyepiece, with dual 1.25" and 2" barrels, ATAF7008

The 8mm focal length of this Astro-Tech 70 degree Field AF Series dual-barrel eyepiece is designed for unsurpassed medium high power wide field observing with short focal length refractors and fast focal ratio/short focal length reflectors. Contrast is very good for planetary and lunar use, rivaling that of orthoscopics and Brandons, but with a substantially wider field of view. Its high contrast also makes it a good choice for resolving detail in planetary nebulas, while its sharpness across the field makes smaller globular clusters vivid and nearly three-dimensional.

This 8mm Astro-Tech AF is also exceptional for medium power viewing with short focal length refractors and fast focal ratio Dobsonian reflectors. It is more or less regularly useful with long focal length scopes, but below average seeing conditions may limit its performance. If so-so seeing is the norm where you observe, its 8mm focal length may represent the maximum practical with a long focal length scope.

With its dual barrel design, it can be used in both 2" and 1.25" focusers and star diagonals with no adapters needed.

The 17mm eye relief of this 8mm Astro-Tech is ideal for those who must wear eyeglasses while observing due to astigmatism. Vignetting will be minimal for eyeglass wearers, although the very wide field may require some moving of the head from side to side to see the entire field, even for those who donýt wear glasses.

This Astro-Tech comes with both 1.25" and 2" barrels, dust covers for both ends of the eyepiece, and a plastic bolt-type eyepiece container.

The optical performance of this 8mm Astro-Tech is exceptional at any price, but is truly outstanding at its actual very sensible price. It is well corrected, high in contrast, flat and sharp across its entire 70 degree field. We feel that this Astro-Tech 70 degree Field AF Series eyepiece equals or surpasses the performance of exotic designs costing twice its very reasonable price. It would be a welcome addition to any astronomerýs observing kit.


  • Field of view 70 degree
  • Eye Relief 17mm
  • Focal Length 8mm
  • Number of optical elements 8
  • Barrel Size 1.25"/2"
  • Weight 16.8 oz.
  • Warranty 2 years

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