sgsc(1)

✨ sgsc — find HST GSC stars in a square on the sky ✨

okay bestie, welcome to the sgsc(1) manual page, but make it cute 💖 this is the whole thing, nothing skipped, no cap.

🌸 NAME 🌸

sgsc — find HST GSC stars in a square on the sky 🦋

🎀 SYNOPSIS 🎀

sgsc [options] [-b or -j] ra dec [equinox]

💅 DESCRIPTION 💅

so sgsc is a little utility that goes and finds all of the Hubble Space Telescope Guide Star Catalog objects in a region of the sky you pick, and then lists them with their sky positions and magnitudes, sorted by brightness — brightest first, main character energy 👑.

Output goes to standard out, unless you set the -w flag, in which case it goes to objectname.gsc or search.gsc instead. iykyk.

It's somewhat similar to RGSC, which can search from lists of coordinates but cannot sort the output 😭 (it's giving "no thoughts, head empty"). Also, sgsc is a link to scat. periodt.

✨ OPTIONS ✨

• -a — list the single closest catalog source 🎯
• -b <RA> <Dec> — output B1950 (FK4) coordinates 🌈
• -d — sort by distance from center instead of by flux 📏
• -g <class> — object class (0=stars 3=galaxies -1=all) 🌟
• -h — print heading, else do not 📝
• -j <RA> <Dec> — output J2000 (FK5) coordinates around this center 🌍
• -m [<bright magnitude>] <faint magnitude> — limiting catalog magnitude(s) (default none, bright -2 if only faint is given) 🔆
• -n <num> — number of brightest stars to print 🔢
• -o <name> — object name used for output file naming 🏷️
• -r <radius> — radius of search circle 1in arcsec (default 10) 🌀
• -s — sort by RA instead of flux 🧭
• -t — tab table to standard output as well as file 🗂️
• -v — verbose listing of processing intermediate results 👀
• -w — write tab table output file imagename.gsc 💾

🫶 SEE ALSO 🫶

scat(1), rgsc(1), suac(1), susac(1), imgsc(1)

💜 AUTHOR 💜

Jessica Mink, SAO (jmink@cfa.harvard.edu) — an icon, fr fr 💖

and that's the whole vibe check, bestie 🧚 this was the WCS manual page, version date 14 April 1998, filed under sgsc(1) — slay 💅🌸