Re: [BAA Comets] SWAN25F this morning. Peter Tickner 06 Apr 2025 11:48 UTC

Hello Nick

I looked and failed on those listed coordinates this morning. Partly I think because it didn’t clear local obstructions until civil twilight had started and partly looking through my f/10 14inch SCT there wasn’t much room for error.

Are there any updated coordinates?

Regards,

Peter

Sent from my iPhone

> On 6 Apr 2025, at 12:44, Nick James <ndj@nickdjames.com> wrote:
>
> I imaged the comet from Chelmsford again this morning and it was considerably brighter than yesterday. I get the following total magnitudes and coma diameters with comphot using a 51mm, f/4.9 refr. + ASI2600MC. Green channel vs Gaia G DR3:
>
> 2025 April 5.157    9.6    2.3'
> 2025 April 6.150    8.0    3.8'
>
> Transparency was probably a bit better this morning but conditions and time were similar.
>
> Interesting behaviour so please observe this comet if you can and submit magnitude estimates. It is still on the PCCP so no official designation yet.
>
> Nick James
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