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    Re: Refraction, Cassini model
    From: Roger W. Sinnott
    Date: 2018 Nov 29, 08:24 -0500

    Paul,

     

    Thanks for pointing this out!  You’re right, the text describing the Hohenkerk algorithm in the 2013 Explanatory Supplement is identical to that of Hohenkerk-Sinclair in the 1992 ES. (I just compared them word-for-word and number-by-number.)  So apparently Young’s criticism applies to the formula for A in the middle of page 278 (and page 142 in the older ES), which he says is obsolete and should be replaced by a newer one.

     

    There is no program listing in either ES, so I presume the mistakes Young found in that apply to Technical Note 63 only.

     

    Roger

       

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