I was just thinking yesterday how cool it would be to combine data from lots of seestars - could be a big community project!

Great job Elliot - glad the tip was useful! 😃 Know what you mean about lack of clear nights - keeping everything crossed for at least a few more in the coming weeks! 🤞

Unfortunately I don't have Pixinsight (can't quite justify the cost - yet!) but that sounds exactly like the new feature that's coming in Siril 1.4. Can't wait!

Thanks Elliot! Yes, it's a mosaic 🙂 Here's what it looks like after using 'Deep Sky Stack' in the SeeStar (about 460x10sec subs):

There seems to be more detail in the one on the right, but I don't think that would be obvious on a small screen.

Another interesting comparison, but perhaps not very 'fair' as they're not processed exactly the same way. Left: a crop of the first image in this thread (seestar stack). Right: Siril stack of the same subs. Both denoise/deconvolution in Graxpert, further stretching, colour calibration etc in Siril.

Yes, it is possible, but at the moment (v1.2.6) Siril can't re-create a large mosaic if the subs at the edges don't overlap much with the reference image. So I can get a stack of the central part, but not the 'double width' of the x2 mosaic. Sorry, I'm not explaining that very well!

Thank you Matthias! The Seestar certainly does a good job, and at the moment it's the only way I've found to restack all the mosaic files from several sessions. I think when Siril 1.4 is released that will be even better though. Here's a manual Siril stack (left) compared to the Seestar (right):

Thanks Darren! 😃

Oh yeah - never noticed that before! 😃

Wowza! 😍

Processing details:
Siril: Stacked, stars removed with Starnet
Graxpert: Background extraction, denoised, nebula deconvolution
Siril: Stretched, colour calibration, saturation, stars recombined
Photoshop: Cosmetic 'fiddling' to remove artefacts around one of the stars, contrast tweaked with curves

You're welcome 🙂

Yes, I just use the sky atlas. For Andromeda I use the framing mode (x2) to get more in. I'm using Siril to stack the individual subs, but I think you can also 'restack' multiple nights-worth in the Seestar app.