Email list hosting service & mailing list manager

29P early hours of 23rd November Peter Tickner (23 Nov 2020 01:08 UTC)
Re: [BAA Comets] 29P early hours of 23rd November Nick James (23 Nov 2020 07:14 UTC)
29P 22nd November hints of coma features Peter Carson (23 Nov 2020 16:53 UTC)
Re: [BAA Comets] 29P early hours of 23rd November Richard Miles (23 Nov 2020 17:55 UTC)
Re: [BAA Comets] 29P early hours of 23rd November Nick James (23 Nov 2020 18:12 UTC)
Re: [BAA Comets] 29P early hours of 23rd November Richard Miles (23 Nov 2020 19:00 UTC)
Re: [BAA Comets] 29P early hours of 23rd November Janice McClean 1 (24 Nov 2020 09:33 UTC)
Re: [BAA Comets] 29P early hours of 23rd November Richard Miles (23 Nov 2020 17:51 UTC)

Re: [BAA Comets] 29P early hours of 23rd November Richard Miles 23 Nov 2020 17:55 UTC

Nick - Great image showing the discontinuity between the star-like
pseudonucleus and the ever-expanding visible coma.

No joy with 2.0-m images due to bad weather.
However, provided you build the SNR as you have with a longish time-series,
your images can provide data almost as good given suitable seeing and focus.
This becomes increasingly the case as the coma expands because amateurs have
the luxury of sitting on a target for a long time whereas access to the
2.0-m is only for a limited few minutes. At least we got a good result with
the FT South just 19 hours after the outburst started - that's where the
2.0-m really scores well.

Richard

----- Original Message -----
From: "Nick James" <ndj@nickdjames.com>
To: <baa-comet@simplelists.com>
Sent: Monday, November 23, 2020 7:13 AM
Subject: Re: [BAA Comets] 29P early hours of 23rd November

> Peter,
>
> Thanks. Here is mine taken about the same time.
>
> This is a stack of 20x60s at 0".65 per pixel. The seeing was reasonably
> good (2".4 FWHM) but I have sharpened the image a bit. The central
> bright region is very starlike and there are suggestions of some
> features in the extended circular coma.
>
> Hopefully Richard will manage to get some images with the 2.0-m so we
> can confirm this.
>
> Nick.
>
>
>
>
> On 23/11/2020 01:08, Peter Tickner - peter.tickner1472 at btinternet.com
> (via baa-comet list) wrote:
>> It has only just cleared around here but I am now imaging it with my Atik
>> 460EX CCD taking 10 second exposures at 2x binning through my 14inch SCT,
>> no
>> filters or reducers.
>
> To unsubscribe from this list please go to
> http://www.simplelists.com/confirm.php?u=aR5jVcAm0PpxqWzIIDZTQWdURWgNdCOC