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2023-09-16: APP 2.0.0-beta23 has been released !

Improved performance again, CMD-A now works in macOS File Chooser, big improvement for bad column cosmetic correction, solved several bugs

We are very close now to  releasing APP 2.0.0 stable with a complete printable manual...

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Starless images

2 Posts
2 Users
Red Giant
Joined: 4 years ago
Posts: 48
Topic starter  

I did remember or hear correctly that the next APP update will include a star removal tool?

If so, will I be able to remove the stars, do my processing, and then add the stars back after?

The reason for asking is my WO Redcat scope always leaves me with halos around bright stars in my image and I have been researching for some time now ways to remove the halos. By removing the stars and only leaving the nebula and halos in the image, it would be possible to "heal" or "blend" out the halos (using other software) and then adding the stars back to the halo-less image.

I have read that this is possible with PI and PS, but I have little to no experience with those. Wondering if something like this is coming to APP?

Universe Admin
Joined: 6 years ago
Posts: 5701

Hi Damian,

Well, APP now is in beta with a star reduction algorithm which is being improved upon. It also allows for star removal and in the future something like putting back stars is likely possible. It's not yet though and may take some time. At the moment people indeed do this with PS, PI, but also try the "remove stars" from APP and then put stars back using PS. I personally never did that so you'd have to find an online resource for that unfortunately.