HUBBLE SPACE TELESCOPE DAILY REPORT #1907 PERIOD COVERED: 0000Z (UTC) 06/25/97 - 0000Z (UTC) 06/26/97 Daily Status Report as of 177/0000Z 1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed STIS/CCD 7659 (Daily Darks to Update Acquisition Bad Pixel Table) The Space Telescope Imaging Spectrograph (CCD) was used to make dark calibration images in order to update the acquisition bad pixel table. Daily hot pixel lists can also be used for science data analysis. The observations were executed as scheduled, and no anomalies were noted. 1.2 Completed WF/PC-2 7450 (The Formation of Bulges of Spiral Galaxies: Central Visual-Infrared Color Gradients) The WF/PC-2 was used to make observations of the bulge in spiral galaxy NGC-5475 in order to obtain high-resolution optical and near infrared images for a complete survey sample of bulges of spiral galaxies. The observations were completed as scheduled, and no anomalies were reported. 1.3 Completed Two Sets of STIS/CCD 7700 (STIS Non-Scripted Parallel Archive Proposal) The Space Telescope Imaging Telescope (CCD) was used to obtain slitless spectroscopy with the G750L grism to search for emission line galaxies at intermediate to high redshift. Field galaxy surveys have shown that at high redshift most galaxies have strong emission lines, and are compact and blue. This suggests that star formation rates were higher than at present,and that AGN may have been more frequent. The low background and high resolution of HST separates these objects from the background. The proposal completed as planned, and no problems were reported. 1.4 Completed NIC/2 7330 (The Fueling of Active Nucleii: A NICMOS Snapshot Survey) The Near Infrared Camera (Camera Two) was used to probe the dark matter distribution of NGC-5614, far from the center, by observing intervening absorption from the MgII doublet (lambda 2800) in the spectrum of one background QSO located in a geometrically optimal position. HST observations are required because this feature is in a wavelength range not accessible from the ground, and the QSO magnitudes and expected strength of absorption make IUE observations unfeasible. The proposal completed as expected with no anomalies. 1.5 Completed WF/PC-2 6194 (WF/PC-2 Cycle 5: Polarization Proposal) The WF/PC-2 was used to make polarization observations of star BD+64D106 at four different spacecraft roll angles. This should permit a detailed and independent calibration of each polarizer quad. A visual flat calibration image was also taken. The observations were executed as scheduled, and no anomalies were noted. 1.6 Completed STIS/CCD 7063 (STIS SMOV CCD Contamination Monitor) The Space Telescope Imaging Spectrograph (CCD) was used to make observations of standard star GD153 in order to measure flux and look for any gross changes over time that might indicate contamination. The observations were completed as scheduled, and no anomalies were reported. 1.7 Completed STIS/CCD 7068 (STIS CCD Diffuse Source Acquisition (STIS 11)) The Space Telescope Imaging Spectrograph (CCD) was used to make images of the defuse object NGC-1399. This is to demonstrate the ability of the STIS flight software to locate the brightest region in a diffuse or extended source within an acquisition aperture, determine the position of a spectroscopic slit, and position the target within the slit. The observations were executed as scheduled, and no anomalies were noted. 1.8 Completed Three Sets STIS/MA2 7604 (Cycle 7 MAMA Dark Measurements) The Space Telescope Imaging Spectrograph (MA2) was used to make MAMA dark measurements. These darks will be used in later image reductions and also trended over the instrument's life time as an indicator of the detector's degradation or damage. The observations were completed as scheduled, and no problems were reported. 1.9 Completed Two Sets of WF/PC-2 6452 (Global and Temporal Coverage of a Atmospheric Regions of the Planet Jupiter) The WF/PC-2 was used to make observations of selected regions of the planet Jupiter in order to investigate its atmospheric dynamics. These data will be used in the interpretations of the observations made from the Galileo Mission. The observations were executed as scheduled, and no anomalies were noted. 1.10 Completed WF/PC-2 6509 (Jovian Global Photometry during the Galileo Epoch) The WF/PC-2 was used to make observations of the planet Jupiter to coincide which observations taken with the Galileo spacecraft. These data will be used to study the vertical aerosol structure of the Jovian atmosphere as well as its spatial and temporal variability. The observations were completed as planned, and no anomalies were reported. 1.11 Completed Two Sets of STIS/MA2 7098 (Band I and Band II Flat Field Uniformity) The Space Telescope Imaging Spectrograph (MA2) was used to make Band 1 and Band 2 flat field uniformity calibration observations, and to measure high S/N DFLAT to assess flat field uniformity, and to compare to lab calibrations. The observations were completed as planned, and no anomalies were reported. 1.12 Completed WF/PC-2 6836 (Light Curve of an Eclipsing Millisecond Pulsar) The WF/PC-2 was used to make observations of the eclipsing millisecond pulsar PSRJ2051-0 in order to obtain its light curve. This pulsar is an exciting new millisecond pulsar which is in a 2.38 hour circular orbit about a 0.03 solar mass companion which eclipses the pulsed radiation from the pulsar for 20 minutes each orbit. The companion is only the second eclipsing millisecond pulsar companion identified optically. The observations were executed as scheduled, and no anomalies were noted. 1.13 Completed Three Sets of WF/PC-2 6887 (A Photometric Search for Faint Companions to Nearby Stars) The WF/PC-2 was used to make photometric search observations of the nearby stars HD10700, G208-44-5 and L726-8-A in order to look for possible companions. The technique involves use of the Planetary Camera with wide band pass filters to photometrically measure for the presence of resolved dark companions. The observations were executed as scheduled, and no anomalies were noted. 1.14 Completed Two Sets of STIS /CCD 7675 (STIS Non-Scripted Parallel Archive Proposal) The Space Telescope Imaging Spectrograph (CCD) was used in the parallel mode to obtain slitless spectroscopy with the G750L grism to search for emission line galaxies at intermediate to high redshift. The observations were completed as planned, and no anomalies were reported. 1.15 Completed Eight Sets of NIC/1/2/3 7676 (NICMOS-One Orbit Parallel) The Near Infrared Camera (Cameras One, Two and Three) was used to conduct an on-orbit calibration procedure. This was none in parallel with the prime science observations. The procedure was completed as scheduled, and no anomalies were noted. 1.16 Completed WF/PC-2 6776 (A Comparative HST Imaging Study of Radio Galaxies and Hosts) A clear understanding of the nature of the host galaxies of radio-quiet quasars, radio-loud quasars, and radio galaxies is of central importance in any attempt to unify and relate the three main classes of powerful active galaxies. Existing HST studies of quasar hosts, while producing many interesting new results, have yielded surprisingly little hard information on the properties of the hosts themselves. This imaging study using the WF/PC-2 of PKS2247+14 will remedy this situation by undertaking redder, line-free observations of our three matched AGN samples. The proposal completed with no reported problems. 1.17 Completed Two Sets of NIC/1/2/3 7701 (NICMOS Short One Orbit Parallel) The Near Infrared Camera (Cameras One, Two and Three) was used as part of a short NICMOS one orbit parallel program, to obtain "JHK" imaging of sky regions when another instrument is prime. The observations were completed as scheduled, and no anomalies were reported. 1.18 Completed NIC/1/2/3 7729 (NICMOS Short One Orbit Parallel) The Near Infrared Camera (Cameras One, Two and Three) was used to obtain "JHK" imaging of sky regions while another instrument was prime. These observations were part of the short NICMOS one orbit parallel program. The observations were executed as scheduled, and no anomalies were noted. 2.0 FLIGHT OPERATIONS SUMMARY: 2.1 Guide Star Acquisitions: Scheduled Acquisitions : 11 Successful : 11 Scheduled Reacquisitions : 2 Successful : 2 2.2 FHST Updates: Scheduled : 20 Successful : 20 2.3 Operations Notes: A NSSC-1 6.1A patch was installed at 176/1335Z. The STIS COR was adjusted prior to a fine alignment observation set at 177/0828Z. 3.0 SIGNIFICANT FORTHCOMING EVENTS: Continuation of normal science and SMOV operations. /DMH