Helen,

Thanks. I'll take a look this evening.

Nick.

On 28/06/2026 20:46, Helen Usher - helen.usher at yahoo.co.uk (via
baa-comet list) wrote:
> Hi Nick,
> Here is some 2m data 😎   scheduled by a youngster at yesterday's Fed Astro Conference.  Hopefully there will be more from her brother's scheduled observations tomorrow.  And their Mum has taken the BAA membership leaflet to sign up too.
> A good day!
> https://archive.lco.global/?reduction_level=91&request_id=4231983&start=2014-01-01&end=2026-07-31%2023%3A59&limit=20&public=true
> Best wishes
> Helen
> Yahoo Mail: Search, organise, conquer
>
>    On Sun, 28 Jun 2026 at 0:31, Nick James<ndj@nickdjames.com> wrote:   There has been some discussion on comets-ml about the elongated
> appearance of the coma of 220P/McNaught. David Swan obtained the
> attached image on June 26.4 using iTelescope T26, (a 0.5m, f/3
> delta-Rho). I have measured astrometry using David's images and some
> later ones taken this morning (June 27.4) by Martin Mobberley using T24
> (a 0.6m, f/6.5 CDK). The astrometry doesn't show any significant
> tailward bias. The residuals are:
>
> K260626:102516    X U94 016.60126    +05.70322      1.0-  1.0-
> K260627:104021    X U69 017.24744    +05.85958      .80-  .36-
>
> If you are able to get any images of this comet please send them to me
> for analysis.
>
> Nick.
>
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