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    Re: An exotic lunar distance puzzle
    From: Frank Reed
    Date: 2011 May 2, 21:30 -0700

    Greg, you wrote:
    "I get the dip as about 18* 42' ( that is a lot ! ) and the Moon and Jupiter altitudes as a negative (Hs). Am I on the right track ?"

    Sounds good to me! Also note that the Sun has to be almost directly below the Moon based on the features visible on the Moon by earthshine as well as the horizontal alignment of the horns of the crescent. The angle between the vertical, perpendicular to the horns, and the line to Jupiter is fairly close to 45 degrees, so you can get very close to the right time just by playing any decent astronomy software (e.g. Stellarium, or Solex) back and forth in time around that date until you get those two alignments right. Once you're there, you should be able to identify the brighter stars around the Moon.

    -FER

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