H


HDR$
header file
   described [1] [2]
   editing contents
   examining
   location for IRAF image
   select based on keyword
headers package
   described [1] [2]
help command
help data base
   rebuilding
help
   
   on-line help system in IRAF
hfilter task
hidden parameters
High Speed Photometer
   aperture location
   described
   instrument health
   polarimetry calibration
histogram task
history
   command line, editing
home directory
   IRAF
HotSeat
hrs package [1] [2]
hsp package [1] [2]
HST data tape
   files in HST data set
   whatxd5 s on?
hstpos task
hst_calib package
hsubtract task