Two On A Big Ocean The Story of the First Circumnavigation
of the Pacific Basin
in a Small Sailing Ship


      

Other Books by
Hal Roth
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Re: Venus

From: Frank Reed (no email)
Date: Sat Dec 10 2005 - 19:46:22 EST

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    George H, you wrote:
    "That's interesting. I would like to know the circumstances, and with what
    instrument, Frank made that observation, when Venus was only 8 degrees North
    of the Sun (ecliptically speaking)."

    A fairly ordinary six-inch reflecting telescope with magnification around
    75x on an equatorial mount with basic RA/Dec setting circles. The trick is to
    look for Venus, in daylight around high noon. You aim the telescope at the
    Sun, projecting the Sun's image, not looking directly. Then adjust for the
    setting circles to match the Sun's position, and offset from there to Venus. As
    long as the sky is very clear, Venus is visible immediately.

    -FER
    42.0N 87.7W, or 41.4N 72.1W.
    www.HistoricalAtlas.com/lunars


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