29P coma features
Peter Tickner
(23 Nov 2020 17:38 UTC)
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Re: [BAA Comets] 29P coma features
denis buczynski
(23 Nov 2020 18:02 UTC)
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Re: [BAA Comets] 29P coma features
Nick James
(23 Nov 2020 22:22 UTC)
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Re: [BAA Comets] 29P coma features
Nick Haigh
(24 Nov 2020 09:13 UTC)
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Re: [BAA Comets] 29P coma features Thomas Lehmann (24 Nov 2020 18:24 UTC)
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Re: [BAA Comets] 29P coma features
Nick James
(24 Nov 2020 20:38 UTC)
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RE: [BAA Comets] 29P coma features
Peter Carson
(24 Nov 2020 21:23 UTC)
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Re: [BAA Comets] 29P coma features
Richard Miles
(24 Nov 2020 23:14 UTC)
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Re: [BAA Comets] 29P coma features
Thomas Lehmann
(26 Nov 2020 16:40 UTC)
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Re: [BAA Comets] 29P coma features Thomas Lehmann 24 Nov 2020 18:24 UTC
Hi Nick, first of all, congrats to you and Jean-Francois for catching this early rise of an outburst. It's very interesting to follow this discussion - thanks to all contributors! I have had a chance to image 29P yesterday eavening before clouds too over the sky. In total I imaged for 26 minutes using my 11" RASA at 1.26" per pixel (2020-11-23, UT 20:45). The same data has been processed in two different way to enhance contrast, see attached image. At this low resolution (about 4") I cannot get much detail in the inner outburst coma. But I'd like to draw your attention to the huge outer coma, extending at least 4 arcmin away from the nucleus. Its asymmetric shape does follow the inner coma to some degree so it might be related to the current outburst and not be a leftover of some previous one. Is it expected to have some material ejected at a much higher velocity than what you derive from the size of inner coma? Or is the comet sitting within a longer living cloud of dust? Clear skies, Thomas > Am Mon, 23 Nov 2020 22:22:51 +0000 > schrieb Nick James <ndj@nickdjames.com>: > > Here's an image from tonight showing the coma expansion since yesterday. > Conditions were not as good as yesterday, both seeing and sky brightness > hence the rather noisy image. > > Nick. > To unsubscribe from this list please go to http://www.simplelists.com/confirm.php?u=ejkIXNOpiaInV9cTLVx8YU5CDmRH7pNd