HUBBLE SPACE TELESCOPE DAILY REPORT #2307 PERIOD COVERED: 0000Z (UTC) 02/11/99 - 0000Z (UTC) 02/12/99 Daily Status Report as of 043/0000Z 1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed Three Sets of WF/PC-2 7713 (WF/P-2 Cycle 7 Supplemental Darks pt3/3) The WF/PC-2 was used to make supplemental dark calibration images. This dark calibration program obtains three dark frames every day to provide data for monitoring and characterizing the evolution of hot pixels. The observations were completed as planned, and no anomalies were noted. 1.2 Completed Two Sets of STIS/CCD 7948 (CCD Dark and Bias Monitor -- Cont. to Dec. 98) The Space Telescope Imaging Spectrograph (CCD) was used to measure CCD dark current and bias rates for the two supported amplifier settings {GAIN=1 and GAIN=4} in order to gather data for making superdarks and superbiases. The data will be used to track the growth of hot pixels on the CCD in general and within the various target acquisition apertures specifically. The observations were executed as scheduled, and no anomalies were noted. 1.3 Completed WF/PC-2 7622 (WF/PC-2 Cycle 7 Internal Monitor) The WF/PC-2 was used to make a set of Cycle 7 internal monitoring calibration measurements. A variety of internal exposures are obtained in order to provide a monitor of the integrity of the CCD camera electronics in both bays {gain 7 and gain 15}, a test for quantum efficiency in the CCDs, and a monitor for possible buildup of contaminants on the CCD windows. A bias calibration and an internal flat calibration image were also taken. The observations were executed as scheduled, and no anomalies were noted. 1.4 Completed Seven Sets of STIS/CCD 8091 (POMS Test Proposal: STIS Non-Scripted Parallel Proposal Continuation) The Space Telescope Imaging Spectrograph (CCD) was used to make high galactic latitude, non-scripted, parallel observations. The observations were completed as planned, and no anomalies were noted. 1.5 Completed Two Sets of WF/PC-2 6967 (Blue Continuum Snapshots of 3CR Radio - Continued Galaxies) The WF/PC-2 was used to make observations of the radio galaxies 3C129.1 and 3C52.0. Radio galaxies are an important class of extragalactic objects: they represent one of the most energetic astrophysical phenomena and they may be used as probes of their environments. They are unique probes of the early Universe. The observations were completed as planned, and no problems were reported. 1.6 Completed STIS/CCD/MA2 7400 (Evidence from Boron for Massive Star Evolution) The Space Telescope Imaging Telescope (CCD/MA2) was used to observe the B III and B II resonance lines at 2065.8 and 1362.5 Angstroms, respectively, in a sample of the main-sequence and slightly evolved blue star BD+56D576 using the HST STIS MAMA detectors and echelle gratings. The proposal completed with no reported problems. 1.7 Completed Two Sets of WF/PC-2 8090 (POMS Test Proposal: WF-II Parallel Archive Proposal Continuation) The WF/PC-2 was used in the parallel mode to make some high galactic latitude archive observations. The program will be used to take parallel images of random areas of the sky. As described in HSTAR 6985, the acquisition for the second iteration of this proposal failed, and the take data flag remained down. Otherwise, the observations were executed as scheduled, and no other anomalies were noted. 1.8 Completed STIS/CCD/MA1/MA2 7744 (Fundamental Properties of a DA-dm Detached Eclipsing Binary With Porb=3h37m) The Space Telescope Imaging Spectrograph (CCD, MA1 and MA2) was to be used to make observations of the DA-dm class detached binary star system EC13471-12 (with an orbital period of 3 hours 37 minutes). As described in HSTAR 6985, the acquisition for this proposal failed, and the take data flag remained down. 1.9 Completed STIS/CCD/MA1/MA2 7673 (STIS MAMA Sensitivity and Focus Monitor) The Space Telescope Imaging Spectrograph (CCD/MA1/MA2) was used to make observations of standard star GRW+70D582 in order to perform a MAMA sensitivity and focus monitoring program. This is to monitor sensitivity of each MAMA grating mode to detect any change due to contamination or other causes. The observations were executed as scheduled, and no anomalies were noted. 1.10 Completed WF/PC-2 6357 (The Nuclear Morphology of Elliptical Galaxies) The WF/PC-2 was used to make images of the early type, large, elliptical galaxy NGC-3377 (taken from a list of 150 galaxies) in order to study its nuclear morphology. This survey will complement Illingworth's snapshot study of later Hubble types. The observations were completed as scheduled, and no anomalies were reported. 1.11 Completed WF/PC-2 7278 (The Connection Between The Obscuring Torus and the Masing Disk in H_20 Me) The WF/PC-2 was used to investigate the connection between the molecular torus and the emission line gas in the H_2O megamaser NGC-4945. The proposal completed nominally with no reported problems. 1.12 Completed STIS/CCD 7912 (STIS Parallel Archive Proposal - Nearby Galaxies - Imaging and Spectroscopy) The Space Telescope Imaging Spectrograph (CCD) was used to make parallel observations of nearby galaxies. This survey will be useful to study the star formation histories, chemical evolution, and distances to these galaxies. These data will be placed immediately into the Hubble Data Archive. The observations were completed as scheduled, and no problems were reported. 1.13 Completed WF/PC-2 7403 (Measuring Black Hole Masses in Broad-Lined AGNs) The WF/PC-2 was used to make observations of broad-lined active galactic nuclei (AGN) located in galaxy NGC-3227. Broad emission lines in AGNs are considered one of the most direct signatures of a large central mass, which is presumed to be a black hole. A wavelength calibration image was also taken. The observations were completed as planned, and no anomalies were reported. 1.14 Completed WF/PC-2 7447 (The Cosmological Evolution of Quasar Host Galaxies) The WF/PC-2 was used to make observations of the host galaxy which surrounds quasar 1257+015 in order to study its cosmological evolution. Such information holds the key to solving several key questions about quasar activity, in particular the physical origin of the dramatic evolution of the quasar luminosity function. The observations were executed as scheduled, and no anomalies were reported. 1.15 Completed WF/PC-2 7475 (The Chemical Content of the Universe at Z< 1.6) The Space Telescope Imaging Spectrograph (CCD) was used to make observations of the background quasar Q0957+5608. Damped Lyman-Alpha absorption systems provide a means of directly probing the chemical content of the deep universe. A wavelength calibration image was also taken. The observations were completed as planned, and no problems were reported. 1.16 Completed WF/PC-2 6790 (Mass Determination of QSOs Using Gravitational Lensing) The WF/PC-2 was used to make observations of quasar Q1548-114 as part of a program to measure the mass of quasar using the gravitational lensing effect. Only four pairs of quasars with different redshifts and angular separations smaller than 5'' are presently known. The observations were completed as planned, and no problems were reported. 2.0 FLIGHT OPERATIONS SUMMARY 2.1 Guide Star Acquisitions: Scheduled Acquisitions : 9 Successful : 9 Scheduled Reacquisitions : 3 Successful : 3 2.2 FHST Updates: Scheduled : 25 Successful : 25 2.3 Operations Notes: Using ROP SR-1, the SSR EDAC error counter was cleared three times. Per ROP NS-5, the engineering data report was cleared. As directed by an operations request, the -D SPA was reconnected at approximately 042/215608Z. Connection was verified by direct telemetry and by solar array section 6 current. All batteries are operating within normal temperature ranges. EPS enginneers will continue to monitor battery temperatures and overall system performance. 3.0 SIGNIFICANT FORTHCOMING EVENTS: Continuation of normal science observations and calibrations. /DMH