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 Nick James 24 Nov 2020 20:37 UTC
Thomas, Thanks for your images. I believe that the outer coma shown on your deep image is the residual coma from previous activity. Nick. On 24/11/2020 18:24, Thomas Lehmann wrote: > > 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 >