... STScI has undertaken a project to place all HST keyword information in one source, the keyword database, and to provide a mechanism for making this keyword information accessible to all HST users, the keyword dictionary, which is a WWW interface to the keyword database. ... Along with forming the headers for the science data, most keyword values are ingested into HST archive catalog fields where they are accessible for archive searches and data characterization. ...

... STScI has undertaken a project to place all HST keyword information in one source, the keyword database, and to provide a mecha­ nism for making this keyword information accessible to all HST users, the keyword dictionary, which is a WWW interface to the keyword database. ... Along with form­ ing the headers for the science data, most keyword values are ingested into HST archive catalog fields where they are accessible for archive searches and data characterization. ...

specpsf -- Form a longslit spectrum for a point source from many point spread function images specpsf refima psfwavs psfims sliwid pixwid subsam cenoff psfpos outpsf . ... The name of the input 2-dimensional reference image to supply the dimensions and header information for the output longslit Point Spread Function (PSF) spectrum image. psfwavs = "" [table file name] . ... The centre of the Point Spread Function in each input image is determined by centroiding and the slit is placed over the image. ...