Re: [APML] red and blue tails on stars?

[Matt BenDaniel <matt@starmatt.com>]

Joe,

Can you see the same artifacts with a loupe on the slide?

matt

At 03:47 PM 11/2/2001 -0500, Joe Pedit wrote:
>I recently worked up an image of M45 on Fuji Provia 100F.  The image is
>from a 90 minute exposure through an AP 130mm f/6 with field flattener
>and Nikon N90s camera.  The slide was scanned with a Polaroid Sprintscan
>4000.  The bright stars on the lower part of the frame have red and blue
>tails going down.  See <http://www.unc.edu/~pedit/lower.jpg> for an
>example.  Bright stars from the upper part of the frame have red and
>blue tails going up.  Any thoughts on what is causing this would be
>appreciated?
>
>A 1/2 scale image (2000 x 1500, 687 kb) of the central part of the frame
>is at <http://www.unc.edu/~pedit/m45-2000.jpg>.


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