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    Re: Limb corrections using a reflective artificial horizon
    From: Greg Rudzinski
    Date: 2014 Nov 6, 09:08 -0800

     

    Dave,

    You ask:

    "Regarding the semi-diameter question, if I shoot using a natural horizon, then I need to +/- one semi-diameter, 16’.  If I’m shooting limb to limb using a tray of oil, do I +/- 16, 32, or 64’?"

     

    After dividing by two then you have Hs. Treat as a standard Hs and apply semi diameter of 16'. Don't forget to correct Hs for refraction also.

     

    Greg Rudzinski

       
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