HUBBLE SPACE TELESCOPE DAILY REPORT #1679 PERIOD COVERED: 0000Z (UTC) 07/19/96 - 0000Z (UTC) 07/22/96 Daily Status Report as of 204/0000Z 1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed Three Sets of FOS/RD 6236 (FOS Cycle 5: Location of = Spectra and Wavelength Calibration: Red Side Detector) The Faint Object Spectrograph (Red Side) was used to make = calibration observations in order to determine the location of the = spectra and to perform a wavelength calibration. All observations were = internal. The observations were completed as planned, and no anomalies = were reported. 1.2 Completed Two Sets of GHRS/1 6558 (The Accreting Magnetic White = Dwarf in AM Her, Heating and Chemical Composition) The High Resolution Spectrograph (Side One) was used to make = spectrographic observations of the accreting, magnetic, binary system, = white dwarf AM-Her in order to study its heating function and chemical = composition. The objective is to study the physics of the accretion in = great detail. A wavelength calibration image was also taken. The = observations were completed as planned, and no anomalies were reported. 1.3 Completed WF/PC-2 6348 (Blue Continuum Snapshots of 3CR Radio = Galaxies) The WF/PC-2 was used to make some snapshot images of the blue = continuum in the radio galaxy 3C257.0. Combined with existing data, = these exposures will provide high spatial resolution information on the = color distribution within galaxies, redding due to dust, spacial indices = of the optical synchrotron jets, and colors of the active nuclei and = tidal jets. The observations were executed as scheduled, and no = anomalies were noted. 1.4 Completed FOS/RD/WF/PC-2 6100 (Measuring the Characteristic Size = of Lyman-Alpha Forest Clouds) The Faint Object Spectrograph (Red Side) and the WF/PC-2 were both = used to make observations of quasar Q0107-0232 in order to study the = characteristics and size of the intervening Lyman-Alpha forest clouds. = The observations were executed as scheduled, and no anomalies were noted. 1.5 Completed WF/PC-2 6187 (WF/PC-2 Cycle 5 Calibration: Earth Flat) The WF/PC-2 was used to make Earth streak flat calibration images. = These streak flats will be used to produce flat fields, to map the OTA = illumination pattern and, in combination with other data, to produce new = superflats. The observations were completed as planned, and no problems = were reported. 1.6 Completed FGS 6274 (Linking the HIPPARCOS to the Extragalactic Refe= rance Frame) The FGS #3 was used to make astrometeric observations of = extra-galactic object INCA221-17 and several other reference stars in = order to help link the HIPPARCOS satellite reference frame to that of the = HST. The observations were completed as planned, and no anomalies were = reported. 1.7 Completed Six Sets of WF/PC-2 6188 (WF/PC-2 Cycle 5 Calibration: = Dark) The WF/PC-2 was used to make internal dark calibration images. = The observations were completed as scheduled, and no problems were = reported. 1.8 Completed Three Sets of WF/PC-2 6361 (High Resolution Imaging of = X-Ray Selected AGNs) The WF/PC-2 was used to make high resolution observations of the = known low, red-shifted, x-ray active galactic nuclei (AGN) MS0039.0-0, = MS0330.8+0 and MS0141.2-0. These data will allow a study of the optical = properties of an unbiased sample of AGN host galaxies. The observations = were completed as scheduled, and no problems were reported. 1.9 Completed FGS 6921 (Intermediate Plate Scale Calibration) The FGSs were used in the POS Mode to make astrometric = observations of stars 4727-25 and HD65949 and several other reference = stars. These data will be used for an intermediate plate scale = calibration of the central region of the FGSs, where all the annual = parallax work is done. The reference stars were taken from the HIPPARCOS = observing list. The observations were executed as scheduled, and no = anomalies were noted. 1.10 Completed WF/PC-2 6250 (WF/PC-2 Cycle 5 Calibration: Internal = Monitor) The WF/PC-2 was used to make a series on internal calibration = observations. Internal flats, biases, and K-Spot calibration images were = taken. These observations are designed to monitor the health of the = cameras. The observations were executed as scheduled, and no anomalies = were noted. 1.11 Completed GHRS/2 6649 (Calibrating Boron Abundances With RR Lyrae = Stars) The High Resolution Spectrograph (Side Two) was used to make = echelle spectrographic observations of the RR-Lyra class star HD182989 in = order to study its Boron abundances. Spectral lines were observed near = 2495 A0. This star is expected to have a low boron abundance, so the = lines will be sharp and unblended, and the temperature dependence of = absorption can be measured as the star pulsates. A wavelength = calibration image was also taken. The observations were completed as = planned, and no problems were reported. 1.12 Completed FOS/BL/RD 6781 (Soft X-Rays and the UV Spectra of a = Complete QSO Sample) The Faint Object Spectrograph (Red and Blue Sides) was used to = obtain ultraviolet spectra of the low-Z quasi-stellar object GQ-Com. The = ionization continuum of this object has been studied using the ROSAT = satellite. The strengths and line profiles of strong and weak = ultraviolet emission and absorption lines, and the ultraviolet continuum = were studied. The observations were completed as planned and no = anomalies were reported. 1.13 Completed GHRS/1 6758 (Far UV airglow and Albedo Observations of = Europa and Ganymede) The High Resolution Spectrograph (Side One) was used to make far = ultraviolet spectrographic observations of the airglow and albedo of = Jupiter's moon Europa. Observations were made of both the leading and = trailing hemispheres. The long term stability of the oxygen airglow = emission and the magnitude of the hemisphere asymmetry will be = determined. The observations were completed as planned, and no problems = were reported. 1.14 Completed WF/PC-2 6346 (Snapshot Survey of the Ultraluminous IRAS = Galaxy Sample-Part 1 High) The WF/PC-2 was used to make snapshot survey observations of the = ultraluminous IRAS galaxy IR10297-04. These data will be searched for = multiple cores, which imply a merger has occurred, and for starburst regio= ns. The observations were executed as scheduled, and no anomalies were = noted. 1.15 Completed GHRS/1 6550 (Understanding the Simplest Symbiotic = System(s) II. The High Resolution Spectrograph (Side One) was used to make = spectrographic observations of an eclipse of the eclipsing, contact, = binary system HD117970 (aka, RW Hydrae) in order to study their symbiotic = relationship. This symbiotic star system is one with a red and one hot = component and known to have emission lines in its spectra. The = observations were executed as scheduled, and no anomalies were noted. 1.16 Completed FGS 6270 (The Parallax of RW Tri) The FGSs were used in the POS Mode to make astrometric = observations of old nova RW Tri and several other reference stars to = measure its parallax. The observations were completed as planned, and no = anomalies were noted. 2.0 FLIGHT OPERATIONS SUMMARY: 2.1 Guide Star Acquisitions: Scheduled Acquisitions : 15 Successful : 15 Scheduled Reacquisitions : 25 Successful : 25 2.2 FHST Updates: Scheduled : 38 Successful : 38 2.3 Operations Notes: No opertional problems were encountered over the weekend. The DMS = Flight Controllers re-scheduled the STR playbacks (by adding SSA return = services) in order to recover all science data which would have been lost = due to numerous STR tape overflows. A congratulatory message was received from GSFC thanking all = involved personnel (DMS Flight Controllers, both on-duty Flight = Operations teams, various Systems Engineers, Mission Planning personnel = at GSFC, and PASSOPS scheduling personnel) for their "superb efforts" = over the weekend. 3.0 SIGNIFICANT FORTHCOMING EVENTS: Nothing at this time. /DMH