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    Capturing Distinctive Bird Images

My Lens is bigger then yours!!!

Discussion in 'Photography Equipment & Products' started by ShaneF, Sep 1, 2013.

  1. ShaneF

    ShaneF No longer a newbie, moving up!

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    Last edited by a moderator: Sep 11, 2014
  2. iPhoto17

    iPhoto17 TPF Noob!

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    so its a telescope?
     
  3. Solarflare

    Solarflare No longer a newbie, moving up!

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  4. ShaneF

    ShaneF No longer a newbie, moving up!

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    Where does it say its the biggest lens in existence? is says - The world's largest dedicated SLR Super Telephoto lens.

    I believe the Hubble Space Telescope is the winner for the biggest.
     
    Last edited: Sep 2, 2013
  5. gryphonslair99

    gryphonslair99 Been spending a lot of time on here!

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    You are just now discovering this lens??? Geez, we have talked about it around here for years. :wink:
     
  6. ShaneF

    ShaneF No longer a newbie, moving up!

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    Well for only having just recently taken a interest in photography a few months ago im not up to what was discussed on this forum 2 years ago and i though it was interesting. Maybe some of the members who were not around 2 years ago might find it interesting also.
     
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  7. Dao

    Dao No longer a newbie, moving up!

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    Maybe you are not too active in here. That lens and video was quoted in the past week or 2 ago. But that's ok, we understand since interesting things always pop up here once in awhile. :) Thanks for the post anyway.
     
  8. EDL

    EDL No longer a newbie, moving up!

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    I understand it's for sale too...or was. I think they were asking $76,000 for it. I'm not sure on that, but I think I remember an article on this lens somewhere that said that.
     
  9. KmH

    KmH Helping photographers learn to fish Supporting Member

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    The Hubble isn't very big at all, having a 7.9 foot mirror.

    The Hubble's big advantage is it's above Earth's atmosphere.

    The 7.9 foot primary mirror was made by Perkins-Elmer and was shaped wrong such that it had sever spherical aberration.
    A testing device (null corrector) used during mirror figuring to assure a properly shaped non-spherical mirror, had been incorrectly assembled.
    Unfortunately, the error in the primary mirror would not be detected until Hubble was on orbit.

    The Gran Telescopio Canarias single aperture telescope has an effective light gathering surface that is just over 34 feet across (10.4 m, or 410 inches), which is 4.3 times greater than the diameter of Hubble's mirror. Gran Telescopio Canarias - Wikipedia, the free encyclopedia

    The Large Binocular Telescope has 2, 8.4 meter mirrors. Large Binocular Telescope - Wikipedia, the free encyclopedia

    The Keck Observatory's optical telescope interferometer has 2, 10 meter mirrors. W. M. Keck Observatory - Wikipedia, the free encyclopedia
     
    Last edited: Sep 3, 2013
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  10. kundalini

    kundalini Been spending a lot of time on here!

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    If I'm not mistaken, the initial problems with the mirror on Hubble was a failure to convert Metric measurements from the European team to Imperial measurements from the US team. That's why I'm still pissed off with the US promise to go metric back in the 60's. How difficult is base 10?
     
  11. Dao

    Dao No longer a newbie, moving up!

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    You know, I think it is more difficult for not using metric.
     
  12. KmH

    KmH Helping photographers learn to fish Supporting Member

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    That issue was between NASA and Lockheed. The conversion of newton-seconds to pound-seconds was the f-up, and cause a very expensive Mars probe to dip into the atmosphere of Mars and burn up.
    Mars Climate Orbiter - Wikipedia, the free encyclopedia
     
    Last edited: Sep 3, 2013

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