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    Re: Aldebaran occultation
    From: Peter Monta
    Date: 2017 Mar 5, 20:39 -0500
    Hi Alex,

    Binoculars (or "night glasses" are relatively recent invention, 18 century or so).
    Could people use this method in the earlier times by somehow obscuring (shielding) the Moon?

    I don't know, but that would certainly be a reasonable thing to do.  It's not quite the same issue, but I saw the occultation using a telescope, and one thing that really helped with the earthshine is to keep the bright Moon out of the eyepiece's field of view.  That way the earthshine was actually visible and I could give confident estimates of the time remaining to the rest of the group.

    No way I could do naked eye, but my brother could, all the way to the event.  The rest were on binoculars.

    I too would like a convenient, and preferably open-source, tool for really first-class computation of these things.  Apparently the lunar occultation community has one, but it's Windows, so I didn't quite have time to get it up and running.  Also it's not clear exactly how it does the lunar topography, but the ephemeris stuff sounded okay (DExxx).

    Cheers,
    Peter

       
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