IUE Observations of Comet Austin (1989c1)

Observations of comet Austin (1989c1) were made using the International Ultraviolet Explorer satellite on December 22, 1989 (preperihelion) and on nine slates between May 7 and 24, 1990 (postperihelion). A summary of observation dates and parameters is -given in Table 1. The ultraviolet spectrum is characteristic of that of non-dusty comets. Here me present some preliminary results for OH and CS production rates and dust-reflected solar continuum emission based upon the long wavelength, low resolution mode spectra; photometry using the IUE Fine Error Sensor; a detection of the CO fourth positive system in the short wavelength, low dispersion spectra; and an upper limit on S2.