C/2023 H2 Lemmon Peter Tickner (09 Nov 2023 00:51 UTC)
Re: [BAA Comets] C/2023 H2 Lemmon Wayne Hawley (09 Nov 2023 00:59 UTC)
Re: [BAA Comets] C/2023 H2 Lemmon Nick James (09 Nov 2023 06:50 UTC)
Re: [BAA Comets] C/2023 H2 Lemmon Peter Tickner (09 Nov 2023 08:31 UTC)
Re: [BAA Comets] C/2023 H2 Lemmon Peter Carson (09 Nov 2023 08:50 UTC)

Re: [BAA Comets] C/2023 H2 Lemmon Nick James 09 Nov 2023 06:50 UTC

Peter,

Thanks. Those are nicely processed images which pick up both the faint
ion tail in PA 25 and the small spike in the opposite direction. As you
say, this is a very fast-moving comet so needs stacks of short exposure
subframes.

Thanks also for submitting your images to the archive. Could you add the
orientation and field of view in the caption please? This helps a lot
when it comes to analysis. From comparison with other images your image
either doesn't have north at the top or it is mirror imaged but it is
hard to tell which.

This is not so important with planets since you can generally quickly
tell the scale and orientation. It is much more difficult with comets!

Nick.

On 09/11/2023 00:51, Peter Tickner - peter.tickner1472 at btinternet.com
(via baa-comet list) wrote:
> This isn't too far in the sky from 12P so after an abortive attempt on 6th
> November I managed some stacks of it on 7th November.  Very bright and very
> fast moving!
>
>
>
> I'll send a set for the archive as well.
>
>
>
> Peter
>
>
>
> Flickr link: https://flic.kr/p/2peFdBy
>
> To unsubscribe from this list please go to https://www.simplelists.com/confirm/?u=Aj4vCBHI6JSRpYRB2DWvMTYlWL2vuAnC
>