Helen,

Thanks. I've reprocessed my image from Nov 17 and the two faint blobs
were artefacts caused by some problems on three of the subframes. I've
removed these from the stack. My image was taken at almost the same time
as your 1.0 m one but using a rather smaller instrument (the 0.43-m CDK
at Alnitak in Spain). The LS filter shows the same features Richard has
depicted which is always encouraging!

Nick.

On 18/11/2023 12:32, Helen Usher - helen.usher at yahoo.co.uk (via
baa-comet list) wrote:
>   Richard Miles provided this for us last night
>
> As well as the R data above we've got a G and B.  So I'm attaching the automatically produced colour image.