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    Morning Twilight Camera Jupiter Lunar
    From: Greg Rudzinski
    Date: 2012 Sep 8, 07:58 -0700

    This morning before sunrise was an opportunity to capture Jupiter close to the Moon on the far side of the illuminated limb. The odd pair showed conspicuously high in the sky. The DSLR Canon 10MP with the 200mm classic fixed prime Pentax lens was quickly hoisted to snap a shot. Settings were a guess at ISO 800, f 5.6, 1/500 sec., infinite focus. The screen display showed a decent image to work with on the first go. The lunar calculations worked out to an error of -0.4' which is a decent result.

    Pixel count 989
    Minutes of arc per pixel .0975'
    Distance to far limb 1* 36.4'

    There was room to increase ISO to 1600, shutter to 1/2000 sec, and f stop to 4 which would be fast enough to capture this Jupiter lunar from the deck of a small craft underway. This is something the digital camera can do that the scoped sextant can't.

    Greg Rudzinski
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