FITS with embedded ICC profiles

[ajeb78]

Both PixInsight and Siril have adopted a common approach to embedding ICC profiles inside FITS for color management provision. The ICC profiles are embedded as an extension HDU with the extension name "ICCProfile" containing the ICC profile as a byte stream. Currently GraXpert ignores these and the saved files do not contain the ICC profiles. It would be great if, if present, they could be preserved and simply re-written to the output FITS.

I have attached a zip compressed example including an embedded ICC profile.

small_fit.zip