10-30-2025, 07:24 PM
(This post was last modified: 10-30-2025, 07:30 PM by Zero01.
Edit Reason: tidy up formatting etc
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(10-28-2025, 12:59 AM)roymixon Wrote:(10-18-2025, 12:45 PM)Ofnuts Wrote: For astro, you have better work directly from the raw files, and AFAIK there are free astro-specific applications.
I'm work with converted tif file 16bit
You might have luck with DS9 (https://sites.google.com/cfa.harvard.edu...9/download) (free, widely used), normally you would use the FITS format (https://en.wikipedia.org/wiki/FITS) with astrophotography - but you can still import tiff etc into DS9 and take it from there, but you would lose metadata probably, so I would suggest you convert your tiff files to fits using ImageMagick first, should be as simple as..
magick image.tiff image.fits
..then when you've finished you can maybe use GIMP to get everything just right!
This video might help with your initial request:
Using masks with ds9: https://m.youtube.com/watch?v=H49fnw9w6y0