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    A small puzzle
    From: Geoffrey Kolbe
    Date: 2000 Sep 11, 12:40 AM

    I sent a message privately to Rick Emerson, offering a low sea mist on the
    horizon as a possible solution to the problem. Rick asked that this exchange
    be copied to the list - so here it is!
    ----------------------------------8<--------------------------------------
    
     > Rick.
     >
     > Thanks for your interesting puzzle.
     >
     > You say the horizon was clear, but you seemed also to think it worth
     > waiting for a lighter horizon to take the Jupiter and Moon sightings, so
     > you cannot have been entirely happy with the horizon.
    
    Um, perhaps I was a bit unclear (no pun intended) about the horizon
    issue.  I knew I'd still be able to shoot Jupiter fairly close to
    sunrise and, of course, the Moon would be usable well past that.
    Waiting for a better horizon was more a matter of being dead sure
    about the horizon instead of "merely" sure.
    
     > So what about the possibility of a low sea mist on the horizon at
     > the time of your star sight, which had dissipated when the planet
     > sightings were taken, or was simply local to that particular
     > azimuth bearing of 110 degrees?
    
    Now, this is, of course, a possibility as is, as best I can recall,
    the (greater?) chance I mistakenly used a low cloud bank as the
    horizon.  The dawn sky was generally clear (we'd had a cold front pass
    through the day before to clear things out and the evening stars
    session from the preceeding evening was a case of "so many stars, so
    little time") but it's entirely possible that what I took to be the
    horizon was, in fact, a cloud bank close to the horizon.  I'll go back
    and play with the numbers a bit to see if that resolves the problem.
    
    Also, for the record, I checked Betelgeuse this past Saturday morning
    and I'm confident that's the star I shot.
    
    Rick
    S/V One With The Wind, Baba 35
    

       
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