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GIMP in astrophotography - my YT tutorials

Processing Deep Sky How-to
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Piotr K. avatar
Piotr K. avatar
Hey guys, recently I started making video tutorials about astrophotography images processing in GIMP. I wonder if anyone is still working with this free software? I think it is still very useful, and I try to achieve as much as possible, using just simple - and somewhat forgotten, I think - techniques. In this topic I intend to post links to my videos. Here is the first one, about removing halos around stars, caused by IR passed through filters which shouldn't pass it:

Removing halos around stars

Please let me know what you think - any comments are appreciated!

And here is a small thumbnail of the title slide:
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Tony Gondola avatar
Tony Gondola avatar
That's excellent. GIMP is indeed a powerful, free tool and should not be overlooked.
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Alien_Enthusiast avatar
Alien_Enthusiast avatar
I love GIMP
Leonard avatar
Leonard avatar
Yes ,keep making tutorials please
TiffsAndAstro avatar
TiffsAndAstro avatar
I use gimp, though only very basically smile

A tutorial for blending between parts of two M42 images would be great btw ;)
Piotr K. avatar
Piotr K. avatar
TiffsAndAstro:
A tutorial for blending between parts of two M42 images would be great btw ;)


Good idea, will think about it!
Piotr K. avatar
Piotr K. avatar
The second video, showing how to correct stars' shapes and colors in the corners of the image:

Fixing shapes and colors of stars

Piotr K. avatar
Piotr K. avatar
Another processing tutorial - this time I try to cope with M31 photo made without flats. Hope someone will find it useful

Astrophotography Siril and GIMP - processing M31 galaxy shot without flats
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Tony Gondola avatar
Tony Gondola avatar
Bravo for doing that. I am a big fan of freeware and GIMP is a very capable and powerful program.
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Piotr K. avatar
Piotr K. avatar
Yet another tutorial - probably my first serious attempt to make a decent image of M31 with an achromatic refractor SW 80/400:

Astrophotography with an achromatic refractor - M31 processed in GIMP
Steven Fanutti avatar
Steven Fanutti avatar
This is an excellent topic. I started out with GIMP and eventually went back to it. I haven't watched any of the tutorials yet, but I am looking forward to it. I process my images in GIMP. I've used GIMP combined with LibreOffice Draw to create my own star charts. Darktable is also an extremely useful program that I use to convert RAW files to TIF and PNG formats for processing in GIMP. I only wish there was an out-of-the-box alignment tool for astrophotography in GIMP, but for me, Siril does that job.
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Oscar Calzón avatar
Oscar Calzón avatar
Thanks for sharing, GIMP is a very goof tool
Piotr K. avatar
Piotr K. avatar
Two-part tutorial, showing how to edit Double Cluster, shot with an achromatic refractor - presumably not a very well suited scope for open clusters, and yet, the result is quite good!

Double Cluster from an achromat, part 1



Double Cluster from an achromat, part 2
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Leonard avatar
Leonard avatar
Great work, thanks