WCS-RD2XY(1)

📦 version 0.98, in debian bookworm, debian trixie, fedora 43, fedora 44, ubuntu jammy, ubuntu noble, ubuntu questing, ubuntu resolute, ubuntu stonking

💖 WCS-RD2XY 💖

okay bestie, welcome to wcs-rd2xy, part of the astrometry.net family ✨ (that's the manual section, WCS-RD2XY(1), in case you were wondering).

so like. you know how you have a big ol' list of sky positions in (RA,Dec) and you're like "girl what pixels even are these"? yeah. this is the tool. it converts lists of pixel from (RA,Dec) to (x,y) positions. literally that's the whole job. she's a specialist, she's booked, she's thriving 💅

🌸 SYNOPSIS 🌸

wcs-rd2xy [options] -w file

like, you need the -w file, that's not optional, that's the whole point, no cap 🫶

✨ OPTIONS ✨

  • -w file — the WCS input file. the blueprint. the map. the moment. 🗺️
  • -e extension — which FITS HDU number to read the WCS from (default 0 = primary). so if your WCS is chilling in some other extension, say the number here. default is the primary one 💫
  • -i file — the rdls input file. your list goes in here 📥
  • -o file — the xyls output file. your pixels come out here 📤
  • -f index — rdls field index (default: all). only want one field? name it. want everything? don't say anything, the default has you 🌈
  • -R name — RA column name. tell her what your RA column is actually called 🎀
  • -D name — DEC column name. same vibe, but for Dec 💜
  • -t — just use TAN projection, even if a SIP extension exists. like, ignore the SIP, we're doing TAN today, and we're not discussing it 🙈
  • -L — force using WCSlib rather than Astrometry.net routines. different engine, same destination 🚗
  • -r ra -d ra — specify a single point (in deg) to convert. it gets printed to stdout, not to a file. one point, one answer, straight to your terminal ⭐
  • -v — +verbose. she will talk. she will tell you things. let her yap 📢

👑 AUTHOR 👑

The Astrometry.net team. Principal investigators are David W. Hogg (NYU) and Dustin Lang (CMU). icons only, honestly 🫶

🔭 SEE ALSO 🔭

lowkey reminder bestie: that -w file in the synopsis is doing a LOT of heavy lifting, so don't come for me when you forget it 😭

okay and finally, the little sign-off at the bottom of the page: this is version 0.56, dated July 2015, from astrometry.net. vintage. iconic. still slaying ✨🎀🦋

📦 where this page comes from