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    Re: Buying a sextant- a cautionary tale.
    From: Bill B
    Date: 2006 May 5, 03:18 -0400

    Thanks Chuck, I *should have* done a third count and checked against Frank's
    and .gov sites, but time was short and frustration levels were getting high.
    But there are no "should haves," I did or I didn't.
    
    Omar's site listed Mintaka as RA 5:32:18 and declination as 0d 00.4' N on
    May 5, 2006.  RA 5:32:18 = SHA 276d 55!5 without a v adjustment for the sun?
    
    Almanac listed delta Orionus as SHA 276d 55!3 and declination as Od 17!6 S.
    That's an significant difference in declination.
    
    Quote:
    > Mintaka and delta Orionus are one and the same. Look
    > on pages 272 and 273 of the U.S. Nautical Almanac
    > under SHA 276.
    
    I did, but my almanac has it as delta Orionus, not Mintaka.  And Omar's
    Mintaka did not match the...  Oy vey, whatever that means ;-)
    
    Even after correcting to almanac SHA and declination, I am still off Alex's
    figures, which is another point of frustration (especially after the aborted
    calculator duel and defense of 229's honor. )
    
    Bill
    
    > -- Bill wrote:
    >
    >> Using the Hipparcos Catalogue the closet star I
    >> could to delta Orion for
    >> that SHA range and declination starting in Od was
    >> Mintaka.  I could not see
    >> a delta Orion on Omars site.
    >>
    >> I don't see anything matching Mintak's name or
    >> specifications in the
    >> almanac.
    >
    Chuck responded:
    >
    > Mintaka and delta Orionus are one and the same. Look
    > on pages 272 and 273 of the U.S. Nautical Almanac
    > under SHA 276. It is the right-most of the 3 stars in
    > Orion's belt.
    >
    > Mintaka is one of my favorite stars. Note that its
    > declination is about 0 degrees 17 minutes South. That
    > means that it rises almost exactly in the east (090)
    > and sets almost exactly in the west (270) every day of
    > the year.
    
    
    

       
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