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    Re: Off Center Sextant Scope Observations
    From: Fred Hebard
    Date: 2007 Nov 23, 10:35 -0500

    You can see this most clearly if you bring a star to coincidence, as
    for index correction determination, and then move the image around in
    the telescope.  The apparent side error will change moving side to
    side, and,  I suppose, the index error up and down (I don't know
    about the index error as I was observing for side error).
    On Nov 22, 2007, at 7:39 PM, Greg Rudzinski wrote:
    > What happens to an image of a celestial body when viewed off center in
    > a sextant scope? I have a bad habit of using the lower half of the
    > field of view when taking lower limb observations of the sun. I
    > suspect that this increases the observed altitude slightly.
    > Greg Rudzinski
    > >
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