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By stacking on the main comet's nucleus, stars and galaxies all get trailed. The fragment is moving roughly the same as the parent (plus it is in about the same relative position as on other images).
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On 1/16/2021 10:45 AM, Bernard Miller wrote:
How can you tell that is a fragment and not a star?
From: DarkSkyNewMexico@groups.io On Behalf Of Gregg Ruppel
Sent: Saturday, January 16, 2021 10:40 AM
Subject: [DarkSkyNewMexico] Comet 141P Machholz and fragment
I think I was able to find one of the fragments (141Pb) recently broken off from 141P Machholz:
Luminance only, 20 x 60sec from Dark Sky New Mexico
Visit my astronomy & astrophotography site http://www.greggsastronomy.com/
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