Thanks Daniel. --- daniel turner <outwest112@yahoo.com> wrote:
--- Edward Lunt <lunco@yahoo.com> wrote:
Hi Everyone; I was suprised that in the close-up of the head of the comet (the third image) the core is not round but is in the shape of a "bar". Most interesting. Ed Lunt
That's because you were tracking on the stars and the comet moved during your exposure.
It's a problem with photographing fast moving comets like this one; either you track on the stars and the comet is elongated or you track on the comet head and the stars trail.
Some of the photos you see on the internet are made by tracking on the head then removing the image of the comet from the trailed images of the stars, processing the stars so that they are not trailed, and them pasting the comet image back on top of them.
Nice photos anyway.
DT
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