HUBBLE SPACE TELESCOPE DAILY REPORT #2583 PERIOD COVERED: 0000Z (UTC) 03/17/00 - 0000Z (UTC) 03/20/00 Daily Status Report as of 080/0000Z 1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED: 1.1 Completed Three Sets of STIS/CCD 8439 (Bias Monitor-Part 2 C8) The Space Telescope Imaging Spectrograph (CCD) was used to monitor the bias in the 1x1, 1x2, 2x1, and 2x2 bin settings at gain=1, and 1x1 at gain = 4, to build up high-S/N superbiases and track the evolution of hot columns. The proposal completed with no reported problems. 1.2 Completed Four Sets of STIS/CCD/MA1 8421 (Spectroscopic Sensitivity for (MAMA and) CCD) The Space Telescope Imaging Spectrograph (CCD and MA1) was used to perform basic sensitivity measurement for some supported (MAMA and) CCD spectroscopic modes. Sensitivity measurements are done for a few primary tilts of the gratings. As described in 2.1 and HSTAR 7542, the acquisition for the second iteration of this proposal defaulted to fine lock backup on one FGS only, possible affecting three observations. Otherwise, the proposal completed nominally, with no further reported problems. 1.3 Completed Thirteen Sets of 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. As described in HSTAR 7542 and 2.1 the acquisition for the third iteration of this proposal defaulted to fine lock backup on one FGS only, possible affecting three observations. Otherwise, the observations were completed as planned, and no further anomalies were reported. 1.4 Completed Five Sets of STIS/CCD 8437 (Dark Monitor-Part 2 C8) The Space Telescope Imaging Spectrograph (CCD) was used to monitor the darks. The proposal completed nominally. 1.5 Completed WF/PC-2 8552 (The Crab Synchrotron Nebula: Short Version) The WF/PC-2 was used to obtain observations to accompany Chandra observations of the inner Crab synchrotron nebula. The proposal completed nominally. 1.6 Completed Twelve Sets of STIS/CCD 8796 (POMS Test Proposal: STIS Non-Scripted Parallel Proposal Continuation IV) The Space Telescope Imaging Spectrograph (CCD) was used in the parallel mode to make some low galactic latitude archive observations. The observations were executed as scheduled, and no anomalies were noted. 1.7 Completed WF/PC-2 8173 (Alignment and Evolution of Redshift One Radio Galaxies) The WF/PC-2 was used to observe galaxies associated with powerful distant radio sources which are the most massive ellipticals known at early cosmic epochs, and are also uniquely important for understanding the physics of AGN and the interactions between the radio source and its environment. The observations completed with no reported problems. 1.8 Completed Two Sets of STIS/CCD 8549 (POMS Test Proposal: Non-Scripted Parallel Proposal Continuation I) The Space Telescope Imaging Spectrograph (CCD) was used to make low galactic latitude, non-scripted parallel observations as part of a POMS test proposal. The observations were completed as planned, and no anomalies were reported. 1.9 Completed WF/PC-2 8239 (Imaging the NLR in a Complete Sample of z<0.5 Radio-Quiet PG Quasars) The WF/PC-2 was used to observe quasar PG0953+414 and to determine its role in the evolution of galaxies, where a central engine leaves its visible imprints in the galaxy through strong ionization and heating of the ISM. The observations completed with no reported problems. 1.10 Completed Eight Sets of WF/PC-2 8457 (UV Earth Flats) The WF/PC-2 was used to obtain a series of Ultraviolet Earth flats. The observations were completed with no reported problems. 1.11 Completed STIS/CCD/MA1/MA2 7479 (Epsilon Eri: Structure and Non-Thermal Heating) The Space Telescope Imaging Spectrograph (CCD, MA1 and MA2) was used to observe Epsilon Eri, the most active single K dwarf within 10 pc of the Sun. Its proximity allows studies of emission line profiles as well as fluxes. Epsilon Eri has been investigated with IUE, at Lo and Hi resolution, and with ROSAT {PSPC and WFC}, and these spectra have been used to make models of the structure of the transition region and corona, and to establish the non-thermal energy requirements. The observations completed with no anomalous activity. 1.12 Completed Three Sets of WF/PC-2 8460 (Cycle 8 Supplemental Darks pt2/3) The WF/PC-2 was used to obtain three dark frames every day to provide data for monitoring and characterizing the evolution of hot pixels. The observations completed with no reported problems. 1.13 Completed Two Sets of STIS/MA1 8426 (Cycle 8 MAMA Dark Measurements) The Space Telescope Imaging Spectrograph (MA1) was used to make a routine Cycle-8 MAMA dark noise calibration measurement. This proposal will provide the primary means of checking on the health of the MAMA detectors. This is done through frequent monitoring of the background count rate. The observations were completed as planned, and no problems were reported. 1.14 Completed WF/PC-2 8325 (Galaxy Evolution in Low-Density Environments: WFPC2 Imaging of Poor X-Ray Clusters at z=0.2-0.3) The WF/PC-2 was used to obtain high quality morphological information on galaxies within 9 X-ray-selected poor clusters at z=0.2-0.3. These morphologies will be combined with information on the stellar populations of the galaxies from our on-going spectroscopic survey of these systems to provide a complete view of the morphological and spectral evolution of galaxies within these clusters. The observations completed nominally. 1.15 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 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. 1.16 Completed STIS/CCD 8228 (The Black Hole Versus Bulge Mass Relationship in Spiral Galaxies) The Space Telescope Imaging Spectrograph (CCD) was used to make observations of the galaxy NGC-4420 in order to study the black hole versus bulge mass relationship in spiral galaxies. A wavelength calibration image was also taken. The observations were executed as scheduled, and no anomalies were noted. 1.17 Completed STIS/CCD 8340 (Probing the Kinematics of the Narrow-Line Region in Seyfert Galaxies with Slitless Spectroscopy) The Space Telescope Imaging Spectrograph (CCD) was used to perform studies of the gas kinematics of the narrow-line regions in Seyfert galaxies. Previous studies indicate complex velocity fields, with evidence for both gravitational and non-gravitational forces. The proposal completed nominally. 1.18 Completed WF/PC-2 8146 (A Search for Binary L-Dwarfs) The WF/PC-2 was used to search for close binaries amongst the sample of 37 low-temperature L dwarfs, identified primarily in the course of the DENIS and 2MASS near-infrared surveys. The observations completed with no reported problems. 1.19 Completed Two Sets of STIS/CCD 8474 (Coronographic Imaging of Protoplanetary Disks) The Space Telescope Imaging Spectrograph (CCD) was used to obtain broad-band optical coronographic imaging that will be used to search for circumstellar disks and indirect signatures of the presence of massive planets toward the nearby Herbig Ae/Be and T Tauri stars. The observations completed with no reported problems. 1.20 Completed WF/PC-2 8328 (HST Astrometry to Gauge the Distance of PSR0833-45 {VELA} and PSR0656+14) The WF/PC-2 was used to make astrometric observations of the reference star STAR-0835 in order study the distance of PSR0833-45 {VELA} and PSR0656+14. High angular resolution, coupled with sensitivity, makes HST the ideal instrument to measure tiny displacements of faint objects, such as those due to proper motions and annual parallaxes of Isolated Neutron Stars. The observations were executed as scheduled, and no anomalies were noted. 1.21 Completed STIS/CCD 8236 (Black Holes and Gas Disks in a Complete Sample of Radio-Loud Ellipticals - II: Kinematics) The Space Telescope Imaging Spectrograph (CCD) was used to make observations of the radio-loud elliptical galaxy NGC-5490. From these observations we will measure the black hole masses, determine the nature, kinematics, and structure of the central gas disks and obtain a modeled upper limit to their mass accretion rates. A wavelength calibration image was also taken. The observations were completed as planned, and no problems were reported. 1.22 Completed WF/PC-2 8301 (A Snapshot Survey of X-ray Selected Central Cluster Galaxies) The WF/PC-2 was used to make snapshot survey observations of the x-ray, central cluster galaxy A1246. Central cluster galaxies are the most massive stellar systems known and have been used as standard candles for many decades. The observations were executed as scheduled, and no anomalies were noted. 1.23 Completed STIS/CCD 8217 (Tests of Stellar Models Using Four Extremely Massive Spectroscopic Binaries in the R136 Cluster) The Space Telescope Imaging Spectrograph (CCD) was used to observe four non-interacting double-lined spectroscopic binaries discovered in the R136 cluster by the Cycle 6 FOS spectroscopy. The proposal completed nominally. 1.24 Completed WF/PC-2 8216 (T Tauri Star Snapshot Survey II. Completing the CTTs Sample) The WF/PC-2 was used to make observations of the T-Tauri class star known as Reipurth-4 as part of Snapshot Survey II. This database will be of fundamental importance to understanding the nature of planet-forming environments and their frequency in the galaxy. The observations were executed as scheduled, and no anomalies were noted. 2.0 FLIGHT OPERATIONS SUMMARY: 2.1 Guide Star Acquisitions: Scheduled Acquisitions: 20 Successful: 20 Per HSTAR 7542, the acquisition at 078/023059Z defaulted to fine lock backup on FGS-3 only when the FGS-1 scan step limit was exceeded. The proposals described in 1.2 and 1.3 may have been affected. The acquisition at 080/011918Z defaulted to fine lock backup on FGS-1 only when the scan step limit was exceeded on FGS-2. The three subsequent re-acquisitions also result in fine lock backup. HSTAR 7544 was written. Two proposals, STIS 8138 and WF/PC-2 8090, each occurring during the period of the next report may have been affected. Scheduled Re-acquisitions: 22 Successful: 22 2.2 FHST Updates: Scheduled: 53 Successful: 52 The roll delay update scheduled at 078/065819Z failed due to FHST-3. 2.3 Operations Notes: Using ROP SR-1A, the SSR EDAC error counter was cleared twice. Per ROP IC-1, the MA transponder was used at 078/0542Z and at 078/0725Z. Per HSTAR 7541, there were unusually high EDAC counts during a science playback that began at 078/010639Z. A total of 1524 correctable errors were received from approximately block 2 until approximately block 1700. A subsequent call to the DATA Capture Facility confirmed that all science data was acceptable. The NICMOS FPA temperature sensor for detector 3 was enabled at 078/1449Z. For detector 2 the temperature sensor was enabled at 079/1213Z. An NSSC-1 status buffer dump was performed at 079/0325Z per ROP NS-2. The STIS MCE-2 reset at 079/203830Z while the low voltage was on and while in an SAA interval. The STIS flight software error counter was reset at 079/2126Z as directed by ROP NS-12. MAMA-2 was recovered at 080/010000Z via SMS commanding at the time of high voltage on commanding. After a successful acquisition, the HST suffered two astrometry failures on FGS-1 with stop and off flags set from 080/080634Z to 080/080733Z and from 080/081656Z to 080/081752Z. HSTAR 7545 was written. FGS proposal 8292, which occurs during the period of the next report, was affected. 3.0 SIGNIFICANT FORTHCOMING EVENTS: Continuation of normal science observations and calibrations. /CAW