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    Re: Morning Twilight Camera Jupiter Lunar
    From: Bill B
    Date: 2012 Sep 08, 16:09 -0400

    On 9/8/2012 10:58 AM, Greg Rudzinski wrote:
    > 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
    Excellent results.
    I finally upgraded to a Nikon D7000 and have a manual focus Nikkor
    200mm.  With the smaller array the 200mm has a field of view equivalent
    a 300mm lens.
    David Burch's "Emergency Navigation" has a simplified method of drawing
    a circle around the sun, and comparing the current diameter of sun to
    the pixel count.
    If I recall you and Marcel went to considerably more effort calibrating
    lenses and pixel counts, including the use of quadratic equations.
    I do not remember reading a "cookbook" explanation of your calibration
    method. If does exist online, would you please point me to it.  If not,
    would you consider publishing it?
    Bill B

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