Hi Peter  - indeed yes 2013 not 2020! It was late. I try not to make these mistakes but they keep happening!

Yes, very similar structures in the images. Maybe a faint tail to the upper right in your images too.

Kind regards

Nick
From: baa-comet@simplelists.com <baa-comet@simplelists.com> on behalf of Peter Carson <petercarson100@gmail.com>
Sent: 01 December 2020 09:22
To: baa-comet@simplelists.com <baa-comet@simplelists.com>
Subject: RE: [BAA Comets] C/2020 TL117 (Lemmon)
 

Hi Nick,

Did you mean comet C/2013TL117 ? Your image looks similar to one I got on the 22nd Nov. See http://www.astromania.co.uk/2013TL117_20201122_0109_PCarson.jpg

It appears there is still a well condensed object followed by a more diffuse body. The SNR wasn’t good enough for me to do the astrometry.

 

All the best

Peter

 

Peter Carson Z10

 

Sent from Mail for Windows 10

 

From: Nick Haigh
Sent: 01 December 2020 01:30
To: baa-comet@simplelists.com
Subject: [BAA Comets] C/2020 TL117 (Lemmon)

 

Hi all,

 

According to Denis Buczynski this has recently split though thats all i know. 

 

Image is 2 hours of 10sec subs under moonlit hazy skies. 16" @f2.9, ASI1600MM, baader 610 filter, binned to 1.36"/pixel. Stacked in DSS but using comet coordinates from ASTAP. 

 

According to some transformations to R based on UCAC4 V and (B-V) colours of field stars, and assuming solar colours for the nuclei, and assuming I'm effectively measuring mR (actually a bit longer) I get mV = 19.0 and 19.6 for the main nucleus and the one below respectively.  

 

29/11/20, 0034 to 0500UT (minus cloud and computer crash).

 

Apologies for the text being weird but Im tired and I cant figure it out. I can image mag 20 comets but i cant change text colour. Getting old.

 

Cheers all

 

Nick

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