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Thread: The Large Alvan Clark Refractors of the United States

  1. #31
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    Default Re: The Large Alvan Clark Refractors of the United States



    JG
    It is amazing to just stand there and touch it, and to view through it is even more speicial
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    Default Re: The Large Alvan Clark Refractors of the United States

    Trivia for today: On this day (12 August), 140 years ago, Asaph Hall, Sr., discovered the first of
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    ' moons, Deimos...using the 26” Alvan Clark refractor at the U.S. Naval Observatory!

    Dave
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  4. #33
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    Default Re: The Large Alvan Clark Refractors of the United States

    My avatar is a photo of the 26" Alvin Clark refractor at the University of Virginia's McCormick Observatory in Charlottesville, VA where I live. This
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    was produced right after the Naval Observatory scope, and it benefitted from the discovery of a flaw in the lens of the first 26" scope, which was corrected for UVA's instrument.

    I'm surprised this scope isn't better known, since it's available for public use every first and third Friday evening, weather permitting.

    It's a gorgeous instrument and was at the cutting edge of parallax measurements about 125 years ago. Still gives stunning views of planets and globs to visitors.

    Here's a link to some info on its history


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  5. #34
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    Default Re: The Large Alvan Clark Refractors of the United States


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    Originally Posted by DaveGiltinan
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    My avatar is a photo of the 26" Alvin Clark refractor at the University of Virginia's McCormick Observatory in Charlottesville, VA where I live. This
    To view links or images in this forum your post count must be 1 or greater. You currently have 0 posts.
    was produced right after the Naval Observatory scope, and it benefitted from the discovery of a flaw in the lens of the first 26" scope, which was corrected for UVA's instrument.

    I'm surprised this scope isn't better known, since it's available for public use every first and third Friday evening, weather permitting.

    It's a gorgeous instrument and was at the cutting edge of parallax measurements about 125 years ago. Still gives stunning views of planets and globs to visitors.

    Here's a link to some info on its history


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    Hey Dave, see my post #14 above!

    Dave
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