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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
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