Quote:
Originally Posted by RickS
I'd do a careful comparison of a small area of an example from each filter and look at the stats (e.g. median value) and you should be able to make an educated guess whether they were each taken with a different filter. It's even easier if you have some colourful nebs or galaxies in the field. Might be worth checking the FITS headers as well in case there are some hints in there.
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Ive checked the fits header for what its worth, they all seem to have the correct corresponding filters. This is what the images look like with STF
1. R
2. G
3. B
4. RGB Linked STF
5. RGB Unlinked STF