Yes, quite right Nick, my fault for writing about more than one comet in the same thread – apologies. Struggling to see more in your more processed image Peter but I think Nick’s image probably explains what I’m getting hints off, so some interesting stuff still going on in T2. I also wondered if it’s getting brighter? It was very prominent, even in the 4”.
Andrew
From: baa-comet@simplelists.com [mailto:baa-comet@simplelists.com] On Behalf Of Peter Carson
Sent: 17 May 2020 11:55
To: baa-comet@simplelists.com
Subject: RE: [BAA Comets] C/2017 T2 coma structure
Hi All,
Consider ourselves told off! It’s true that incorrect subject lines are a pain.
Here’s my rather poor effort to show more clearly the inner coma structure from last night’s image, see attached.
Peter
Sent from Mail for Windows 10
From: Nick James
Sent: 17 May 2020 11:47
To: baa-comet@simplelists.com
Subject: [BAA Comets] C/2017 T2 coma structure
Hi Andrew/Peter/Denis,
The discussion has changed from C/2019 Y4 to C/2017 T2 so I have changed
the subject line. Your director gets *very* annoyed when discussions on
one comet are under the subject heading of another! It makes finding
things later very difficult.
Anyway, C/2017 T2 has had an interesting inner coma structure for quite
some time. My last decent image was on April 25 (I've been distracted by
Y4 recently) but the comet clearly showed an outflow of material to the
north which turned back down the tail. The attached image shows that.
The orientation has changed in the three weeks compared to Peter's image
but the feature is remarkably stable.
Nick.
On 17/05/2020 11:38, Peter Carson wrote:
> Hi Andrew,
>
> Here’s my image from last night (16^th ). I’m only seeing one obvious tail
> although it is over 30’ long. There’s something going on in the coma, its not
> evenly bright. Its appears to have a brighter sector towards the NE which ties
> up with the PA of your suspected second tail. How far out from the centre of the
> coma were you seeing your suspected second tail?
>
> All the best
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