Nick et al, All the images being shared are such good quality and clarity. I just can't seem to be able to process my data to look anywhere near as crisp as everyone else. I suspect it is because I am using a DSLR at prime focus and focus may not be spot on, but I also struggle with Deep Sky Stacker. Does the Section have a tutorial on stacking comet data? It would be a most valuable resource. Regards James Dawson james@dawson.me.uk -----Original Message----- From: baa-comet@simplelists.com <baa-comet@simplelists.com> On Behalf Of Nick James Sent: 23 October 2024 08:07 To: baa-comet@simplelists.com Subject: Re: [BAA Comets] C/2023 A3 Tsuchishan-ATLAS this evening. It was a clear, transparent evening here in Chelmsford last night (Oct 22). I've put an image taken with my Edge HD 11 on the BAA website here: https://britastro.org/observations/observation.php?id=20241023_065628_bfeaca274a05056c I've processed this with a log stretch but no other enhancement so, hopefully, it approximates the visual view in a large telescope. It shows the intense central condensation, parabolic hoods ahead of this and a central bright ray behind. The dark lane is also there down the tail although this may be an effect caused by streamers in the tail which are better seen in this wider field image: https://britastro.org/observations/observation.php?id=20241022_203630_2c05054cdb65b1a4 If you have sent me images and observations of the comet many thanks and my apologies if I haven't responded yet. I will get around to it but it is a busy time for he Comet Section Director at the moment! Nick. On 22/10/2024 20:31, Jonathan Shanklin - BAS - jdsh at bas.ac.uk (via baa-comet list) wrote: > With apologies to Paul – I forgot to add the magnitudes of the two components, which gives a combined magnitude for the comparison of 3.7 (4.1 + 5.1), hence the comet would be 3.8. > > I’ve just observed it this evening – I was going to cycle to a darker site, but as I set off I could see that there was cloud around so went to the nearby common. The circus tent had gone so it was a little better and the comet came out as 4.4 – I used lambda as a comparison (although it is listed as a NSV), which is why I twigged that I should have combined the magnitudes of the two components. I’ve discovered that the comet is now visible from my back garden, which gives a slightly darker ambience. It will get higher in the early evening over the next month, albeit fading – it will be a telescopic object by the end of November. > > Regards, > > Jonathan Shanklin > BAA Comet Section visual observations co-ordinator > https://www.ast.cam.ac.uk/~jds/ > > > > From: Paul Abel - paul.abel at yahoo.co.uk (via baa-comet list) > <baa-comet@simplelists.com> > Sent: Sunday, October 20, 2024 7:57 PM > To: baa-comet@simplelists.com > Subject: [BAA Comets] C/2023 A3 Tsuchishan-ATLAS this evening. > > Hi all, > > I managed my first observation of the comet this evening using by 10 x > 32 binoculars. I started at 1840UT but the sky was too bright. I > tried again at 191UT and I was able to see the comet very easily in > the binoculars. Attached is a drawing of the comet- the bright bluish > star in the field is Lambda Ophiuchi which I used to estimate the > magnitude. Lambda Oph is a double star and the bright blue component > is listed as Mv= 3.9. I estimate the comet at: 39-1 giving a Mv= 4.0 > > Cheers, > -Paul > > ----- > Dr. Paul G. Abel, > Lecturer in Theoretical Physics. > School of Physics & Astronomy, > University of Leicester, > University Road, > Leicester UK, LE1 7RH. > > To unsubscribe from this list please go to > https://https://www.simplelists.com/subs/ > > > This email and any attachments are intended solely for the use of the named recipients. If you are not the intended recipient you must not use, disclose, copy or distribute this email or any of its attachments and should notify the sender immediately and delete this email from your system. UK Research and Innovation (UKRI) has taken every reasonable precaution to minimise risk of this email or any attachments containing viruses or malware but the recipient should carry out its own virus and malware checks before opening the attachments. UKRI does not accept any liability for any losses or damages which the recipient may sustain due to presence of any viruses. > > To unsubscribe from this list please go to > https://https://www.simplelists.com/subs/ > To unsubscribe from this list please go to https://www.simplelists.com/confirm/?u=dKTapJtnLHk04DVDXaQ60IBE2v4BMc9C
