HUBBLE SPACE TELESCOPE DAILY REPORT #2387 PERIOD COVERED: 0000Z (UTC) 06/04/99 - 0000Z (UTC) 06/07/99 Daily Status Report as of 158/0000Z 1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed Four Sets of WF/PC-2 7621 (WF/PC-2 Cycle 7 Supplemental Darks PT1/3) The WF/PC-2 was used to make supplemental dark calibration images. This set of calibrations is intended to obtain three dark frames every day to provide data for monitoring and characterizing the evolution of hot pixels. The observations were executed as scheduled, and no anomalies were noted. 1.2 Completed Three Sets of WF/PC-2 8053 (WF/PC-2 Cycle-7 Earth Flats -- Part II) The WF/PC-2 was used to take Earth flat calibration images. This proposal obtains sequences of Earth streak flats to construct high quality flat fields for the WF/PC-2 filter set. The observations were executed as scheduled, and no anomalies were noted. 1.3 Completed Three Sets of WF/PC-2 8059 (POMS Test Proposal: WF-2 Targeted Parallel Archive Proposal) The WF/PC-2 was used to make observations in parallel with the prime science observations. The parallel opportunities available with WF/PC-2 in the neighborhood of bright galaxies are treated in a slightly different way from the normal pure parallels. Local group galaxies offer the opportunity for a closer look at young stellar populations. The observations were completed as planned, and no anomalies were reported. 1.4 Completed Five Sets of STIS/CCD 7949 (CCD Dark and Bias Monitor -- Cont. to June 99) The Space Telescope Imaging Spectrograph (CCD) was used to conduct a CCD dark calibration and a bias monitoring program. It was also scheduled 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. 1.5 Completed Three 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 3C430.0, 3C382.0 and 3C249.0. 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 8056 (STIS External Sparse Field CTE Test) The Space Telescope Imaging Spectrograph (CCD) was used to make observations of NGC-5139 as part of a sparse field CTE test, along both the serial and parallel axes. This program needs special commanding to provide the ability to read out with any amplifier {A, B, C, or D}. A bias calibration observation was also taken. The observations were executed as scheduled, and no anomalies were noted. 1.7 Completed Eight 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 low galactic latitude archive observations. The program will be used to take parallel images of random areas of the sky. The observations were executed as scheduled, and no anomalies were noted. 1.8 Completed WF/PC-2 7495 (Survey of Gravitational Lenses as Cosmological Tools) The WF/PC-2 was used to make survey observations of object Q1208+101 by obtaining deep, high-resolution images in the optical and near IR in order to see if it is gravitationally lensed and could be used as a cosmological tool. The observations were executed as scheduled, and no anomalies were noted. 1.9 Completed FGS 8102 (FGS Astrometry of the Extrasolar Planet of GL876) The Fine Guidance Sensors were used to make astrometric observations of a extrasolar planet which is orbiting the M4 class dwarf star GL876. This will help determine the planet's mass. The observations were completed as planned, and no problems were reported. 1.10 Completed Seven Sets of STIS/CCD 8406 (POMS Test Proposal: STIS Non-Scripted Parallel Proposal Continuation V) The Space Telescope Imaging Spectrograph (CCD) was used to make high galactic latitude observations taken in parallel with the prime science observations as part of a POMS proposal. This is a STIS non-scripted parallel Condition V proposal. The observations were completed as scheduled, and no anomalies were reported. 1.11 Completed Two Sets of WF/PC-2 7470 (A Snapshot Survey of Galactic Globular Clusters) The WF/PC-2 was used to make snapshot survey observations of the crowded center of the galactic globular clusters NGC-6401 and NGC-6171. The resulting color-magnitude diagram will include all stars down to about one magnitude below the main-sequence turnoff. The observations were completed as scheduled, and no problems were reported. 1.12 Completed STIS/CCD (The Nuclear Region of NGC-4151) The Space Telescope Imaging Spectrograph (CCD) was used to make observations of the nuclear region of Seyfert galaxy NGC-4151 which will be studied in several ways: 1) low-resolution spectra over the entire UV and visible range will be obtained; 2) slitless spectra of strong emission lines at moderate resolution and narrow-band WF/PC-2 images will be used to map the dynamics of the regions; 3) Echelle spectra over the entire UV bandpass will be used to study the intrinsic absorption in the nucleus; and 4) parallel imaging will be performed of the outer galaxy and other galaxies or QSOs. The observations were completed as planned, and no problems were reported. 1.13 Completed STIS/CCD/MA1 7508 (Ultraviolet Line Eclipses by Extrasolar Planets) The Space Telescope Imaging Spectrograph (CCD and MA1) were used to make observations of star HD217015 in order to obtain ultraviolet line eclipses by extrasolar planets. One of the most exciting events in astronomy last year was the discovery of extrasolar planets. A wavelength calibration image was also taken. The observations were completed as planned, and no problems were reported. 1.14 Completed Three Sets of WF/PC-2 7629 (PSF Characterization) The WF/PC-2 was used to make observations of the globular cluster Omeage Cen in order to study its Spread Function (PSF) characterization. This will provide a subsampled PSF over the full WF/PC-2 field to verify PSF stability, support PSF fitting photometry, and test PSF subtraction as well as dithering techniques {cf. effects of the OTA breathing and CCD gain}. The observations were completed as planned, and no anomalies were reported. 1.15 Completed Two Sets of WF/PC-2 7282 (A Continuing Snapshot Survey for Compact Stellar Groups and Clusters around Wolf-Rayet Stars) The WF/PC-2 was used to make observations of the Wolf-Rayet stars WR7 and WR61 as part of a continuing snapshot survey of compact stellar groups and clusters. The newly-imaged clusters allow us to accurately determine the distances, luminosities, and ages of the WR members. The observations were executed as scheduled, and no anomalies were noted. 1.16 Completed STIS/CCD 7287 (Recovery and Characterization of Old Novae in the Globular Clusters M80 and M14) The The Space Telescope Imaging Spectrograph (CCD) was used to determine whether a few very close binaries in the core of a globular clusters NGC-6093 and TSCO-1860 can drive the dynamical evolution of the 10^5 - 10^6 stars in the cluster. A wave length calibration image was also taken. The proposal completed without reported problems. 1.17 Completed WF/PC-2 7409 (Resolving sdB Binary Systems) The WF/PC-2 was used to make observations to try to resolve the sdB class binary system Star-14233. This is a continuation of the approved Cycle 6 Proposal No. 6351, which due to unlucky circumstances did not succeed in obtaining any data until 8/30/96. The observations were completed as scheduled, and no anomalies were reported. 1.18 Completed STIS/CCD/MA2 8225 (Absorption and Obscuration in Radio-Loud Quasars) The Space Telescope Imaging Spectrograph (CCD and MA1) was used to make observations of the radio-loud quasar MRC1355-23. The role of associated absorption systems and dust obscuration close to the central engines of AGN is not understood. A wavelength calibration image was also taken. The observations were completed as planned, and no anomalies were reported. 1.19 Completed STIS/CCD 7360 (A Search for Broad Absorption Lines in Narrow-Line Seyfert 1 Galaxies) The Space Telescope Imaging Spectrograph (CCD) was used to make ultraviolet spectrographic observations of the Seyfert galaxy IRAS13224 to search for blueshifted absorption lines. A wavelength calibration image was also taken. The observations were completed as planned, and no problems were reported. 1.20 Completed WF/PC-2 8436 (POMS Test Proposal: WFII Backup Parallel Archive Proposal II) The WF/PC-2 was used to make archive observations parallel to the prime science observations as part of a POMS test proposal. This is a POMS test proposal designed to simulate scientific plans. The observations were completed as planned, and no anomalies were reported. 1.21 Completed WF/PC-2/STIS/CCD 7615 (Determination of the Mass Function of a Globular Cluster Through Gravitational Microlensing) The WF/PC-2 and the Space Telescope Imaging Spectrograph (CCD) were used to make gravitational microlensing observations of the large globular cluster NGC-6656 located in Sagittarius in order to study its mass function. Gravitational microlensing offers a unique and direct method of determining the masses of stars and other compact objects down to planetary masses. A bias and dark calibration observations were also taken. The observations were completed as planned, and no problems were reported. 1.22 Completed WF/PC-2 6356 (SNAPSHOT Survey of Ultraluminous Infrared Galaxies) The WF/PC-2 was used to make observations of galaxy Gal-161558 as part of a survey of ultraluminous infrared galaxies. The nature of ultraluminous infrared galaxies has generated considerable controversy. The two main issues are: {1} are they powered by violent bursts of star formation or by hidden quasars? {2} are interactions and mergers invariably involved? The observations were executed as scheduled, and no anomalies were noted. 1.23 Completed STIS/CCD/MA1 7772 (The UV-Upturn of Super-Metal-Rich Globular Clusters) The Space Telescope Imaging Spectrograph (MA1 and CCD) was used to make ultraviolet observations of the super metal rich globular clusters located in galaxy NGC-224 (a.k.a., M-31, Andromeda Galaxy). Clusters were selected with metal enrichment similar to those encountered in the galaxies' nuclear regions, where strong UV fluxes are observed. A wavelength calibration observation was also taken. The observations were executed as scheduled, and no anomalies were noted. 1.24 Completed WF/PC-2 8345 (Multipolar Bubbles and Jets in Very Low Excitation Planetary Nebulae - A WF/PC-2 H-Alpha Imaging Survey) The WF/PC-2 was used to make H-Alpha observations of the very low excitation planetary nebula PK331-02D2 in order to study its multipolar bubbles and jets. Comparison of the morphology of this young PNe sample with more evolved PNe populations will set new constraints on models for the production of jet-like outflows and nebular evolution. The observations were completed as planned, and no problems were reported. 2.0 FLIGHT OPERATIONS SUMMARY 2.1 Guide Star Acquisitions: Scheduled Acquisitions : 27 Successful : 27 Scheduled Reacquisitions : 24 Successful : 24 2.2 FHST Updates: Scheduled : 54 Successful : 53 As documented in HSTAR 7158, the roll delay update at 156/205843Z failed due to FHST-1. Subsequent fill maneuver updates and guide star acquisition were successful. 2.3 Operations Notes: The SSR EDAC error counter was cleared eight times per ROP SR-1. The CCS 48-hour engineering playback test was run this weekend. At 155/1616Z, playback was performed using the re-transmit command. At 157/1425Z, playback was accomplished by moving the playback pointer and then doing normal playback commanding. Per an operations request, the battery benchmark state-of-charge was adjusted at 155/1911Z. The STIS MCE-2 reset at 155/230147Z while the high voltage was off and while outside an SAA interval. The STIS MCE-1 reset at 156/080932Z while the high voltage was off and while in an SAA interval. Then, the MCE-1 reset again at 157/184816Z while the high voltage was off and while outside an SAA interval. In all three instances, the MAMA was recovered by nominal SMS commanding at the time of the next high voltage on commanding. The NSSC-1 status buffer was dumped at 156/0857Z as directed by ROP NS-3. Per ROP NS-5, the engineering report was cleared at 156/1156Z and at 157/1214Z. Finally, the STIS flight software error counter was reset at 155/2309Z, at 156/0852Z, and at 157/2005Z. 3.0 SIGNIFICANT FORTHCOMING EVENTS: Continuation of normal science observations and calibrations. /DMH