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    Re: Lunar distance accuracy
    From: Frank Reed
    Date: 2007 Oct 27, 22:42 -0400

    Alex wrote:
    "One alternative explanation offered was that the eye pupil becomes larger
    in the darkness:-)"
    
    And Greg, you asked:
    "Agreed - which would reduce the depth-of-field, but how exactly would
    that improve the eye's resolution?"
    
    It wouldn't. The idea is that the enlarged pupil uses a much bigger portion
    of the lense+cornea and these are very imperfect optically, so as your eyes
    dark-adapt, stars which should be point-like become flared. You can see
    fainter stars when you've dark-adapted, but tht eye's resolution generally
    falls.
    
     -FER
    
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