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Old 28-12-2011, 01:04 AM
Rob_K
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Join Date: Oct 2006
Location: Bright, Vic, Australia
Posts: 2,187
Quote:
Originally Posted by renormalised View Post
Nice shots Rob

I was just looking at the close up of the head of the comet. I don't know if it's just my eyes or it's actually there, but it looks like the nucleus of the comet may have broken up into 5 or so "string of pearl" segments. You can see a very faint trail of dots aligned up behind one another right near the front of the head. Could just be an artifact of processing (or my eyes like I said ), but there maybe something there.

Really needs a bigger scope to check it out.
Thanks Carl. Yes, I noticed those, and they appear in each of the three subs that were stacked to produce this. There was very slight comet movement between each sub (a couple of pixels). I was going to make a stack on the comet head but as you can see it's very difficult to pick a point (a difficulty which has apparently made precise astrometry a problem). So I stacked on the stars. If those dots were part of the comet they would have gone an obvious bean shape. They didn't so they must be a chance alignment of underlying field stars.

Cheers -
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