[BAA Comets] Comet 17P/Holmes: A marked outburst on January 26

[Richard Miles]

Good work Nick,

Looking at your image (sorry everyone else!) one can see the extension in 
p.a. 20-30 deg but I also commented on the 270 deg feature in my original 
alert, which from your images might be the main pseudonucleus in which case 
there is a more complex asymmetric expansion to the left of the nucleus 
(North upwards). Maybe it's more of a fan developing spanning p.a. 20-170 
deg?

Richard

----- Original Message ----- 
From: "Nick James" <ndj at nickdjames.com>
To: "BAA Comets discussion list" <comets-disc at britastro.org>
Sent: Wednesday, January 28, 2015 9:43 PM
Subject: Re: [BAA Comets] Comet 17P/Holmes: A marked outburst on January 26


> I'm doing a time series on 17P and have done a 44x60s stack offset on the 
> comet's rather slow motion. This shows the odd shape of the coma quite 
> well and also shows that it really is around 30 arcsec in diameter.
>
> http://www.nickdjames.com/Comets/2015/17p_20150128_2100_ndj.jpg
>
> Nick.
>
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