TITLE: GCN GRB OBSERVATION REPORT NUMBER: 245 SUBJECT: GRB990123, Upcoming HST Service Observations DATE: 99/02/03 15:03:58 GMT FROM: Steven Beckwith at STScI Steven Beckwith on behalf of STScI reports: Owing to world-wide interest in GRB 990123, the Space Telescope Science Institute will carry out imaging observations with the HST STIS \ CCD 50CCD (clear filter), dithered, using 3 orbits of Director's Discretionary Time as a service to the community. The observations are scheduled to start Monday, 8 February at 23:06:54 UT, and finish Tuesday, 9 February, 03:21:43 UT. In the spirit of a cooperative multiwavelength attempt to better identify and understand the nature of gamma-ray bursts, the HST data will be publicly available with no proprietary period immediately upon placement into the HST Data Archive, within a day or two of the observations. When we know the exact time of placement in the Archive, we will post it.