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GSO Elliptical Secondary Mirror - 68mm

5.0 (1 Reviews) Read Reviews Write Review
Brand GSO
Part Number AD091
Availability available

Product Info

Manufacturer Description

For years, GSO has made dobsonian telescopes sold under various labels. Users of these scopes know the excellent quality of the optics included, and they have a well-deserved reputation for being the finest mirrors in their price range. We are now pleased to offer virtually the entire line of GSO's Newtonian optics in the US market.

GSO's elliptical flat mirrors have the same high quality as their parabolic primary mirrors. Made from optical grade BK-7 glass, all mirrors have a reflective aluminum coating with a reflectivity of approximately 92-93%. The aluminum coating is protected by a silicon oxide (SiO2) over-coating.

GSO uses high-volume, state-of-the-art, high quality manufacturing and test lines. GSO guarantees diffraction limited performance, but their secondary mirrors typically have a mirror surface quality of 1/12 wave RMS at least, and often better. This very smooth mirror surface results in excellent optical performance with practically no light scatter.

Besides elliptical secondary flats, we also offer matching GSO parabolic primary mirrors, mirror cells, and spiders (all sold separately).

Reviews

5.0 (Based on 1 Reviews) 100% of reviewers recommended this product.
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    1. Guest

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      Time with Product
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      User Notes:
      Review by Dave of Vancouver, Canada.
      1422748800
      Jan 31, 2015

      5.0 Very good: good service, good products

      Pros:

      Good quality,Cost effective

      Cons:

      Comments:

      I am using the mirror in a short focal length corrected astrograph. The price is competitive and overall quality is good. Shipping and service were great.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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