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I am helicocentric correcting some reduced spectra using the manual velocity correction feature in ISIS.
("misc" , "heliocentric velocity" , "apply a spectral shift")

I want to put the correction in the fits header but the BSS_VHEL field is greyed out and is only filled if heliocentric correction is selected during the full data reduction procedure. Does anyone know how to enter data in BSS_VHEL manually ?

Thanks
Robin

This is getting silly

If I open the profile (produced by 5.5.1) in 5.4.1, I can then edit BSS_VHEL and save it.
But if I then open this file in 5.5.1 I find the GEO_ fields have been reset to zero. Why did 5.4.1 remove the GEO_ keywords from the header ?
Surely no program should delete any of the keywords from the original header when resaving the file.

Robin

Robin, I have just modified the V5.5.1 for you. Reload the V5.5.1 installer and install a new time ISIS. You can now edit Vh field (the only difference in
the interface is visible in the "Configuration" tab - you can read for the version V5.5.1a, not V5.5.1).

Christian

Thanks Christian !

I am just watching the live feed from ESA of the Philae probe landing - should be in the next few minutes - fingers crossed
http://rosetta.esa.int/
Robin

Hi Christian,

Editing and saving VHEL now works but any text entered in the comments fields is still not saved

Cheers
Robin

Robin, I have really never supported FITS comments save in ISIS. It's an assumed decision. For me a dangerous option, I am very cautious relative to this for the moment. Sorry.

Christian