delwcs(1)

💫 delwcs — NAME 💫

okay so bestie, this is delwcs, and its whole personality is deleting WCS info out of FITS and IRAF image files. that's it, that's the job. she's a deleter. an icon. 🧹✨

🌸 SYNOPSIS 🌸

delwcs [-v] FITS or IRAF file(s)

🦋 DESCRIPTION 🦋

so basically? delwcs goes into a FITS header and straight-up removes the WCS keywords. the full hit list is:

• "CTYPE1"
• "CRVAL1"
• "CDELT1"
• "CRPIX1"
• "CROTA1"
• "CTYPE2"
• "CRVAL2"
• "CDELT2"
• "CRPIX2"
• "CROTA2"
• "IMWCS"

gone. deleted. not invited to the group chat anymore. 💅

and here's the little plot twist 👀 — if the header has "WRA", "WDEC", and "WEPOCH" or "WEQUINOX" keywords hanging around, then their values replace the values of "RA", "DEC", and "EPOCH" or "EQUINOX". so it's not just deleting, she's also swapping in the world-coordinate versions. multitasking queen. 👑

✨ OPTIONS ✨

• -n — write a new output file, and the new name gets an "e" slapped in right before the file type extension. (yes, really, just an e.) if you don't use this, the default is to overwrite the input file, so like… be aware, bestie. no take-backsies. 😭
• -v — print the names of the keywords as they get deleted. so you can watch the carnage in real time. very satisfying, ngl. 🍿

🫶 AUTHOR 🫶

Jessica Mink, SAO (jmink@cfa.harvard.edu) — the actual legend who wrote this. bow down. 🎀

and that's the whole vibe, bestie! this beauty comes to you from WCSTools, dated 6 July 2001. old but iconic, fr fr. ✨💖🦋