astutil: Astronomical utilities package

• airmass: Compute the airmass at a given elevation above the horizon
• astcalc: Astronomical calculator
• asthedit: Astronomical header editor
• astradius: Find images within a circle on the sky
• asttimes: Compute UT, Julian day, epoch, and sidereal time
• ccdtime: Compute time, magnitude, and signal-to-noise for CCDs
• galactic: Convert ra, dec to galactic coordinates
• gratings: Compute and print grating parameters
• keywpars: Translate the image header keywords used in ASTUTIL package
• pdm: Find periods in light curves by Phase Dispersion Minimization
• precess: Precess a list of astronomical coordinates
• rvcorrect: Compute radial velocity corrections
• setairmass: Compute effective airmass and middle UT for an exposure
• setjd: Compute and set Julian dates in images