Thanks for notifying, do you have a screenshot of what exactly you mean? I can't actually see this black border for instance in the above comet integrations.

@vincent-mod Ahhh... sorry Vincent, it was a completely misunderstanding - please don't care about it, because I mean for black collums on my photo, not borders! But maybe it was a calibration error from my fault, I don't know. If it's not problem, I delete my previous comment and please care about Rodolphe Goldsztejn's commet!

No worries. 🙂

Hello @vincent-mod

See attachments.

Direct outputs from APP, loaded and stretched in PixInsight.

Hope this shows clearly in the screenshots.

If FITS needed, I will share from OneDrive - they are too large for attaching.

Thanks

.

This does look like you had slightly different field of views (very tiny rotation) and APP stacked them with this in mind? Would you be able to try this on a dataset that you know doesn't have this?

Hi,

makes sense indeed. Will check with other data sets but not sure I can find one with absolute 0 rotation.

Anyways, this is really not a critical issue, I can live with it as solutions are trivial to fix it.

Thanks!