HUBBLE SPACE TELESCOPE DAILY REPORT #2158 PERIOD COVERED: 0000Z (UTC) 07/02/98 - 0000Z (UTC) 07/06/98 Daily Status Report as of 187/0000Z 1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed Two Sets of NIC/1 7866 (Multi-Wavelength Monitoring of the M-87 Jet) The Near Infrared Camera (Camera One) was used to make multi-wavelength observations of the jet in Galaxy M-87. Monitoring programs have reveals striking evolution in the jet structure over a 2 year period. The observations were executed as scheduled, and no anomalies were noted. 1.2 Completed Seven Sets of STIS/CCD 7908 (POMS Test Proposal: STIS Non-Scripted Parallel Proposal) The Space Telescope Imaging Spectrograph (CCD) was used to make calibration observations as part of the POMS Test Proposal. This was a STIS non-scripted parallel proposal. During the sixth iteration of this proposal, the acqusition default to fine lock backup described in HSTAR 6565 and 2.1 occurred. Otherwise, the observations were completed as planned, and no further problems were reported. 1.3 Completed Sixteen Sets of WF/PC-2 7909 (POMS Test Proposal: WF II Parallel Archive Proposal) The WF/PC-2 was used to make parallel observations as part of the POMS test proposal. This test proposal is designed to simulate scientific plans. The observations were completed as planned, and no problems were reported. 1.4 Completed Seven 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. 1.5 Completed Ten Sets of WF/PC-2 7712 (WF/PC-2 Cycle 7 Supplemental Darks pt2/3) The WF/PC-2 was used to make a series of Cycle 7 supplemental calibration darks. 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 executed as scheduled, and no anomalies were noted. 1.6 Completed Two Sets of NIC/2 7226 (Search for Massive Jupiters) The Near Infrared Camera (Camera Two) was used to make a corographic search for massive planets around nearby, young main sequence stars. Because of the extreme youth of these objects, any low-mass brown dwarf and planetary companions will still be in a higher luminosity phase and thus easily detectable. A dark calibration image was also taken. During the first iteration of this proposal, the acqusition default to fine lock backup described in HSTAR 6565 and 2.1 occurred. Otherwise, the observations were executed as scheduled, and no further anomalies were noted. 1.7 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. 1.8 Completed WF/PC-2 6938 (PSF Characterization) The WF/PC-2 was used to make point-spread-function (PSF) calibration observations using the large globular cluster Omega Cen. This is to provide a subsampled PSF over the full field to allow PSF fitting photometry, test PSF subtraction as well as dithering techniques {cf. effects of the OTA breathing and CCD gain}. The observations were executed as scheduled, and no anomalies were noted. 1.9 Completed WF/PC-2/STIS/CCD/NIC/1/2/3 7941 (NICMOS Observations of Gravitationally-Magnified Galaxy) The WF/PC-2, The Space Telescope Imaging Spectrograph and the Near Infrared Camera (Cameras One , Two and Three) were all used to make observations of the gravitationally magnified galaxy using foreground cluster CL1354. The highest redshift object known was discovered with a confirmed redshift from Keck telescope spectra of z=4.92 {Franx et al, 1997, ApJ Letters 486, L75}. The galaxy is a red arc lensed by a foreground cluster. The observations were executed as scheduled, and no anomalies were noted. 1.10 Completed STIS/MA1 7272 (Helium Absorption by Protogalactic Gas) The Space Telescope Imaging Spectrograph (MA1) was used to make observations of PKS1935-69. These observations will provide substantially improved S/N and substantially reduced geocoronal contamination compared with extant GHRS spectra, providing a much more secure measure of both discrete cloud and diffuse IGM contributions to the He-II opacity in this sightline. The observations were completed as planned, and no problems were reported. 1.11 Completed Seventeen Sets of NIC/2/3 7907 (NICMOS Pure Parallel Winter 97-98) The Near Infrared Camera (Cameras Two and Three) was used to make pure parallel spectrographic observations of sky regions when another instrument is prime. The observations were completed as planned, and no anomalies were reported. 1.12 Completed Nine Sets of WF/PC-2 8061 (POMS Test Proposal: WF-II Backup Parallel Archive Proposal) This is a POMS test proposal designed to simulate scientific plans. The proposal was executed as planed, and no anomalies were reported. 1.13 Completed NIC/1/2/3 7886 (NICMOS Snap Shot Survey of Early-Type Galaxies) The Near Infrared Camera (Cameras One, Two and Three) was to be used to make observations of the early-type galaxy NGC-5322 as part of a snap-shot broad-band imaging survey. Since almost all early-type galaxies harbor dust, these images which are less sensitive to extinction and will provide superior light profiles for dynamical studies of the cores of these galaxies. As reported in HSTAR 6567 and in 2.1, the guide star acquisition for this proposal failed, the take data flag remained down, and the two scheduled observations were affected. 1.14 Completed Three Sets of NIC/1/2/3 7878 (The Stellar Population of NGC-3379) The Near Infrared Camera (Camera One, Two and Three) was used to make observations to study the stellar population of the nearest normal giant elliptical galaxy NGC-3379. The observations were executed as scheduled, and no anomalies were noted. 1.15 Completed FGS 7598 (Long Term Stability of Transfer Scan Mode in FGS-3) The Fine Guidance Sensor (FGS-3) was used to make observations of standard star UPGREN69 in order to study the long term stability of the Transfer Scan Mode order to study the long term stability of the Transfer Scan Mode. The observations were completed as planned, and no problems were reported. 1.16 Completed Four Sets of STIS/CCD 7910 (STIS Extragalactic Parallel Survey) The Space Telescope Imaging Spectrograph (CCD) was used to make extragalactic slitless spectrographic observations as part of the parallel high galactic latitude survey to search for emission line galaxies. Data was taken in parallel, and are not subject to proprietary time. The observations were executed as scheduled, and no anomalies were noted. 1.17 Completed Three Sets of NIC/2 7233 (Dust Disks Around Main Sequence Stars) The Near Infrared Camera (Camera Two) was used to make observations of the dust disk around main sequence stars. The observations were made with the coronagraph to minimize the effects of glare from the bright central star. A dark calibration image was also taken. During the second iteration of this proposal, the acquisition failure mentioned in 2.1 and in HSTAR 6570 occurred. Otherwise, the observations were completed as scheduled, and no further anomalies were reported. 1.18 Completed WF/PC-2 6713 (Geometric Measurement of Galaxy Distance) The Faint Object Camera (f/96) was used to make observations of supernova remnant CP1-SN1971 in order to make a distance calibration for the galaxy in which it is located. The supernova is being used as a powerful new geometric method for the determination of a galaxy's distance, by obtaining high spatial resolution imageing polarization of the candidate supernova light echoes. The observations were completed as planned, and no anomalies were reported. 1.19 Completed Two Sets of NIC/1/2/3 7844 (H-2 Observations of the Galactic Center Circumnuclear Ring) The Near Infrared Camera (Cameras One, Two and Three) was used to make observations of the galactic center circumnuclear ring(Sections GC-H2-1 and GC-H2-7). These data will be used the distribution of molecular hydrogen in the circumnuclear ring that engulfs the inner two parsecs of the galaxy. The observations were completed as planned, and no anomalies were noted. 1.20 Completed NIC/1/2/3 7216 (Near-Infrared Observations of NGC-6611 {M-16}) The Near Infrared Camera (Cameras One, Two and Three) was used to make observations of the nebula NGC-6611 (a.k.a., M-16). The NICMOS should be able to extend the IMF statistics well into the subsolar-mass range and examine many of the EGGs {i.e., Evaporating Gas Globules} seen in WF/PC-2 images. The observations were completed as planned, and no problems were reported. 1.21 Completed Two Sets of NIC/1/2/3 7896 (A NIR Snapshot Survey of Ultraluminous IR Galaxies) 10| The Near Infrared Camera (Cameras One, Two and Three) was used to make snapshot survey observations of the ultraluminous infrared galaxy QDOTULIR06. Nearly all of these galaxies show evidence for a recent tidal interaction, and we will search for evidence of the merger progenitors near the center of each galaxy, a task made significantly easier with NIR imaging. During the second iteration of this proposal, the guide star acquisition failure described in 2.1 and HSTAR 6564 occurred, affecting one observation. Otherwise, the observations were completed as planned, and no further anomalies were noted. 1.22 Completed STIS/CCD 7654 (Slitless Spectroscopy, CCD) The Space Telescope Imaging Spectrograph (CCD) was used to make slitless spectrographic observations of the variable star AX-Per. The purpose of this observation is to calibrate the dispersion solution and the sensitivity as a function of the target-position in slitless spectroscopy. A wavelength calibration image was also taken. The observations were completed as planned, and no anomalies were reported. 1.23 Completed NIC/1/2/3 7824 (Deep NIC Images of 20 High-Z Damped Ly-Alpha Galaxies) The Near Infrared Camera (Cameras One, Two and Three) was used to make observations of the high-Z damped Lyman-Alpha (DLA) galaxy Q1223+1753. The HST imaging together with ground-based spectroscopy will unify absorption-line studies and faint galaxy imaging studies, providing a comprehensive picture of the history of assembly, star formation, gas consumption, and chemical enrichment in the DLA galaxies. The observations were completed as planned, and no problems were reported. 1.24 Completed Two Sets of 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 stars GRW+70D582 and AGK+81D226 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. 1.25 Completed Two Sets of 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. 1.26 Complete WF/PC-2 5993 (Dark Matter Distribution in A1689 from gravitational lensing) The WF/PC-2 was used to make observations of galaxy cluster Abell-1689-8 in order to study the distribution of dark matter in the lensing galaxy cluster system. This is to carry out an extensive survey of the galaxies lying behind this cluster. The observations were completed as planned, and no problems were reported. 1.27 Completed WF/PC-2 6684 (WF/PC-2 Imaging of 2 JY Radio Galaxies) The WF/PC-2 was used to make observations of the radio galaxy 6C1256+36 from the 6C catalog. These data will be used to look for a correlation of optical structures with known radio luminosity. If such a correlation exists, then it will allow the importance of the radio beam power to the optical structure to be quantified. The observations were executed as scheduled, and no anomalies were noted. 1.28 Completed NIC/1/2/3 7221 (Imaging of Quasar Absorber Systems) The Near Infrared Camera (Cameras One, Two and Three) was used to make observations of quasar QSO0244+34. These data should detect emission from the foreground galaxy which causes the damped Lyman-alpha absorption line systems in the spectra of the quasars. The observations were completed as planned, and no problems were reported. 1.29 Completed NIC/1/2 7692 (Polarizers Calibration) The Near Infrared Camera (Cameras One and Two) was used to make observations of the standard star CHA-DC-F7 as part of a polarization calibration. The polarization and position angle of polarization are measured for two standard polarized point sources and one extended polarized sources of known J and H band polarization. The observations were completed as scheduled, and no problems were noted. 1.30 Completed FGS 6885 (L726-8/ UV-Ceti) The FGSs were used in both the POS and TRANS modes to make astrometric observations of the star UV-Ceti. This is to look for short period, low mass companions in orbit around the star. The observations were completed as planned, an no anomalies were reported. 2.0 FLIGHT OPERATIONS SUMMARY: 2.1 Guide Star Acquisitions: Scheduled Acquisitions : 28 Successful : 25 The acquisition at 181/151052Z defaulted to fine lock on FGS-1 only due to a walkdown failure on FGS-3. The proposals described in 1.2 and 1.6 may have been affected. HSTAR 6564 was written to describe a guide star acquisition failure at 182/181954Z. The proposal described in 1.21 was affected. Per HSTAR 6567, the acquisition at 184/010520Z failed when the search radius on FGS-1 was exceeded. The two previous FHST updates had also failed. The proposal described in 1.13 was affected. The acquisition at 184/2210Z failed when the search radius limit was exceeded. Maps and tracker updates showed small attitude errors. HSTAR 6570 was written. The proposal described in 1.17 was affected. Scheduled Reacquisitions : 31 Successful : 31 2.2 FHST Updates: Scheduled : 66 Successful : 62 Per HSTAR 6566, there were FHST update failures at 184/005917Z and at 184/010202Z when stars were not found in FHST-1. A failure occurred at 186/0829Z. The roll delay update at 186/131137Z failed. HSTAR 6571 was written. The subsequent acquisition was successful. 2.3 Operations Notes: The SSR EDAC error counter was cleared sixteen times using ROP SR-1. Using ROP IC-2, the SSA-1 transmitter was turned on. Per ROP RD-4 ESTR-2 was commanded to record. The STIS MCE-2 reset at 184/121944Z while the low voltage was on and while outside an SAA boundary. HSTAR 6569 was written. Using ROP NS-12, the STIS flight software error counter was reset. MAMA-2 was recovered via the SMS at 185/1723Z when the high voltage was turned on. Full DF-224 dumps were collected on CCS strings A and B at 186/0233Z. The ground master image was updated at 186/0305Z. 3.0 SIGNIFICANT FORTHCOMING EVENTS: Continuation of normal science observations and calibrations. /DMH