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    Re: Automated Sun detector
    From: Frank Reed
    Date: 2007 Dec 06, 13:43 -0500

    "I've come to the conclusion that the only way to get any information on the
    probability of seeing a sunrise/set is to build myself a sun detector and I
    would like to post my idea to get some feedback."
    Ok, here's some feedback: buy an alarm clock, a pencil, and a notebook.
    Seriously, you are talking about the simplest astronomical observation that
    exists. Set your alarm clock for the time of sunrise, get up and walk to the
    window. See Sun? Put a mark in the notebook. I suggest a letter 'S'. Can't
    see Sun? Put a different mark in the notebook, perhaps a letter 'N'. You can
    expand on this system as time and interest permit... What you really need
    are some students. Assign it to them as a year-long project. Then you can
    sleep in. 
    Kidding aside, I agree with Marcel that there is plenty of data available
    already. At minimum, you can rule out sunrise visibility when the sky cover
    is listed as 'overcast' or 'fog'. If you throw in some observational data of
    your own, you ought to be able to estimate a probability of sunrise/sunset
    visibility when conditions are 'mostly cloudy' and 'partly cloudy'.
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