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    Re: Automated Sun detector
    From: Marcel Tschudin
    Date: 2007 Dec 6, 22:13 +0200

    Mike
    
    Just watch the spectral sensitivity of your detector. At some
    occasions I can't see the sun setting, but through the digital camera,
    which is more sensitive in the IR, it is still visible.
    
    And yet an other aspect. Not only clouds may hide the sun. Haze and or
    smog my cause so high extinction at the dip that the sun - even in a
    totally clear sky - is there not any more visible.
    
    It really all depends on what you aim at.
    
    Marcel
    
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