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    Re: Maskelyne and his "able computers"
    From: Frank Reed CT
    Date: 2004 Sep 24, 22:22 EDT
    George H wrote:
    "I'm less convinced by Frank's follow-up, however, in which he said-
    >The lunar distance, LD, is calculated from the
    >difference in ecliptic longitude and latitude using the simple rule
    >  cos(LD) = cos(diff_longitude)*cos(diff_latitude)
    >With the stars and planets, the ecliptic latitudes are low enough that
    >certain approximations can be applied which also reduce the task of
    >computation.
    >Rotating to RA and Dec would lengthen the calculations quite a bit.

    Hi again, George! By omitting the previous sentence from my earlier post, you have missed the point. The equation posted was for Moon-SUN lunars. Get it?

    Frank R
    [ ] Mystic, Connecticut
    [X] Chicago, Illinois
       
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