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    Can You Bias Ho?
    From: Greg B
    Date: 2014 Apr 1, 20:59 -0700

    Hi all, Just a thought - the time that I can do latitude from a noon sight is
    rapidly ending, by next month my Hc will be approximately 65 degrees. I am
    purchasing a precision level with 20" sensitivity / resolution, this should
    allow for some very accurate star sights; I had a thought if I levelled a table
    with the level and placed the 1st surface mirror on it, could I use a 20 degree
    machined metal 'wedge' under the mirror to bias my sun Ho to be 20 degrees less
    (and thus readable on the sextant) ? just a thought. Another question: how
    accurate does the azimuth need to be for a meridian passage sight if I want to
    try getting latitude that way?
    many thanks in advance,

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