writing FITS files

[denfc]

I can read a FITS file easily, img = AstroImage("file.fits"), and then I just attempt to write it back, either with its original header AstroImages.save(outputFname, img; header = head) or without it AstroImages.save(outputFname, img) (FITS files have to have a header?), which I should be able to do, but I receive errors of the type "FITSIO writer error: neither save nor fileio_save is defined due to FileIO.SpecError(FITSIO, :save)" .

Guided by Copilot, I've also tried to save that img with various combinations of FITSIO directly. It looks like there's a issue with the Julia CFITSIO interface.

[sefffal]

@denfc this reply is pretty late, but note that the AstroImage type bundles the header -- you don't pass it separately.

That is, the header information is already stored in img. If its not, you can do something like img = copyheader(plain_array, img_with_header)

[denfc]

Thanks. I don't remember what I was trying to do. I might have just been playing with it, because although I open many FITS files, I rarely, if ever, need to save a modified one. Things are ok now.

[icweaver]

Hi all, glad to hear things are working alright! Will go ahead and close this, but please feel free to re-open if any issues persist