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    Re: USCG Student Sample Problem #4
    From: Antoine Couëtte
    Date: 2013 Apr 27, 12:15 -0700

    RE : http://fer3.com/arc/m2.aspx/USCG-Student-Sample-Problem-4-Rudzinski-apr-2013-g23703

    Hello Greg,

    You wrote :


    My guess on the Sun difference of 0.2' would be the way rounding of semi diameter is done between your program and USNO.


    I would surprised that USNO would make such a 0.2' rounding on the SUN Semi-Diameter which is very well known and changes very slowly. On my side, I do not round the SUN SD and do not use any Irradiation factor either. For this example I am using SD = 16'117 (same value as the 16'1 you have published).

    How about getting third party results ?

    Peter, Andrés or Yves (or others) ?

    From : Nov 01 st, 2013 at UT 22:59:53 / N 26° / E 143°55'3 , with HOE = + 100 ft , standard conditions and Sextant Height (already corrected for Instrument Error) equal to 28°22'7 for SUN LL,

    what intercept do you find ?

    Thanks for your Kind Attention and Best Regards


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