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    Re: Pre Calculating (Hp) For Fixed Angle Reflectors
    From: Greg Rudzinski
    Date: 2018 Jun 8, 14:06 -0700

    C. Solo,

    If using the Bris sextant then it is required to calibrate the upper limb, lower limb, and center Sun individually since the reflected image is often not symmetrical.

    When performing sight reduction you will need Ho to comparem to Hc. Hs is corrected for index error ( sextant), dip, refraction, and semi diameter to get Ho. When calibrating the Bris it will be necessary to reverse the signs of all the corrections to apply to Hc from calculator or table to get Hs calibration.

    When precalculating a time sight use Ho, latitude, and declination in the formula to get LHA (t).

    Greg Rudzinski

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