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-- Focusing and PSF measuring tasks --
psfmeasure - Measure PSF sizes from stellar images
specfocus - Determine spectral focus and alignment variations
starfocus - Determine direct focus variations from stellar images
-- Observation planning tasks --
ccdtime - CCD photometry exposure time calculator
pairmass - Plot airmass vs time for a given coordinate
sptime - Spectroscopic exposure time calculator
specpars - Spectrograph instrument parameters for sptime
-- Instrument/detector characterization --
bitcount - Accumulate the bit statistics for a list of images
findgain - Estimate the gain and readnoise of a CCD
shutcor - Shutter correction from images of varying exposure times
-- Miscellaneous
cgiparse - Parse STRING_QUERY environment variable into task parameters
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