HUBBLE SPACE TELESCOPE DAILY REPORT #1250 PERIOD COVERED: 0000Z Daily Status Report as of 297/0000Z 1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed Two Sets of WF/PC-2 5568 (WF/PC-2 Cycle 4 Calibration: Decon) The WF/PC-2 was used to make an internal flat field calibration observations using the VIS lamp and the internal source as part of a decontamination operations. Dark and K-Spot calibration observations were also taken. The observations were completed as planned, and no problems were reported. 1.2 Completed Four Sets of FOS/BL 5444 (A UV Spectral Library of Metal- Poor Massive Stars) The FOS (Blue Side) was used for snapshot programs to obtain ultraviolet spectra of AV207 a metal-poor star in the LMC. It will be useful for stellar atmosphere and stellar evolution studies. The observations completed without incident. 1.3 Completed Three Sets of HRS/2 5468 (The Mass of the White Dwarf of V471 Tauri: Cycle 4 Medium) The High Resolution Spectrograph (Side 2) was used to observe the white dwarf in the eclipsing binary system, V471 Tau. The observations were made when the target was at positions of greatest elongations on the side of the companion star. The target's velocity curve will be found from the strong Lyman Alpha absorption, and will be used to calculate the mass. There was one reported carrousel reset event at 296/1301Z. There was enough time delay that one observation did not execute. 1.4 Completed FGS 5657 (Duplicity Among Hyades Stars: Cycle 4 High) The FGSs (TRANS-Mode) were used to make astrometric observations of stars VA282, VA366, VA351 and VA502 located in the Hyades cluster in an attempt to find a close binary. The observations were executed as scheduled, and no anomalies were noted. 1.5 Completed Two Sets of WF/PC-2 5655 (WF/PC-2 Cycle 4 Calibration: Internal Monitor. 2: Flats Part 2) The WF/PC-2 was used to make both ultraviolet and visual flats. The observations were completed as planned, and no problems were reported. 1.6 Completed Two Sets of WF/PC-2 5479 (Subarcsecond Structure in Nearby AGNs) The WF/PC-2 was used to make snapshot observations of the nearby active galactic nuclei of MARK937, MARK279, 1034+06 to study the interactions between the central engine, the stars, and the interstellar matter in their AGNs. The observations were executed as scheduled, and no anomalies were noted. 1.7 Completed GHRS/2 5600 (GHRS Side 2 Wavelength Monitor (1st Order Gratings): Cycle 4) The High Resolution Spectrograph (Side Two) was used to make wavelength and resolution calibration observations of its first order gratings using the internal calibration lamp. The observations were completed as planned and no anomalies were noted. 1.8 Completed WF/PC-2 5560 (WF/PC-2 Cycle 4 Calibration: Internal Monitor. 1) The WF/PC-2 was used to make several internal bias, K-Spot, and flat calibration observations to monitor the CCD camera electronics, the optical alignment, and to check for contamination. The observations were completed as planned, and no anomalies were noted. 1.9 Completed GHRS/1 5594 (GHRS Side 1 Sensitivity Monitor: Cycle 4) The High Resolution Spectrograph (Side One) was used to make calibration observations of star BD28D4211 to monitor the long-term sensitivity of the system. The observations were completed as planned, and no anomalies were reported. 1.10 Completed GHRS/2 5599 (GHRS Side 2 Sensitivity Monitor: Cycle 4) The High Resolution Spectrograph was used to make some long term sensitivity monitorings by making observations of standard star BD+28D4211. The observations were executed as scheduled, and no anomalies were noted. 1.11 Completed WF/PC-2 5401 (Luminosities and Morphologies of a Complete 3CR Sample of Radio Galaxies) The WF/PC-2 was used to obtain images of radio galaxy 3C237, which has a Z near 1.0, and also is a quasar. These observations will be used to determine and compare luminosities, and morphologies in the optical and infrared. The observations were executed as scheduled, and no anomalies were noted. 1.12 Completed Two Sets of FOS/RD 5452 (Composition of Dark Material in Iapetus: cycle 4 Medium) The Faint Object Spectrograph (Red Side) was used to make observations of Saturn's moon Iapetus, which has a bright hemisphere and a dark hemisphere. Ultraviolet spectra of both hemispheres were taken. Spectra of Saturn's moon Rhea was also taken for comparison. The observations were completed as scheduled, and no anomalies were noted. 1.13 Completed WF/PC-2 5233 (Stellar Populations and Clusters in Elliptical Galaxies (WC08)) The WF/PC-2 was used to make deep observations of elliptical galaxy NGC-221 to study its stellar population. There was one reported recentering event which lasted for a total of five seconds. No other anomalies were noted. 1.14 Completed WF/PC-2 5505 (Deep Probes of Gravitational Lens Systems) The WF/PC-2 was used to make deep images of of the elliptical galaxy BRI0952-01 which is a member of the Coma Cluster. The intent is to improve our understanding of the stellar populations in ellipticals and to determine the distance to the Coma Cluster. The observations were completed and planned, and no problems were noted. 1.15 Completed GHRS/2 5671 (GHRS Dark Noise Monitor: Cycle 4) The High Resolution Spectrograph (Side Two) was used to make dark calibration images. These were strictly internal tests for routine monitoring of detector dark noise. The observations were executed as scheduled, and no anomalies were noted. 1.16 Completed WF/PC-2 5415 (The Distance to M-96 Galaxy Group: Cycle 4 Medium) The WF/PC-2 was used to make observations of Cepheid variable stars within the galaxy NGC-3368 which itself is located in the M-96 galaxy cluster. This is to help determine the distance to this galactic group, and to improve the determination of the Hubble constant. The observations were completed as planned, and no anomalies were reported. 1.17 Completed FOS/RD 5664 (Quasar Absorption Line Survey: Cycle 4 High) The Faint Object Spectrograph (Red Side) was used to make spectrographic observations of quasi-stellar object B31123+395 to look for absorption lines due to gas in the intergalactic medium and galactic halos. The observations were executed as scheduled, and no anomalies were noted. 1.18 Completed WF/PC-2 5353 (Low-Mass Binaries in the Hyades: Cycle 4 High) The WF/PC-2 was used to make images of the low-mass, late M-Class dwarf star RHY047 which is located in the Hyades cluster. Some of the companion stars may be brown dwarfs. The observations were completed as scheduled, and no problems were reported. 1.19 Completed WF/PC-2 5571 (WF/PC-2 Cycle 4 Calibration: Earthflats, Smaller Set) The WF/PC-2 was used to make several ultraviolet and narrow-band filter Earth flat calibration observations to correct for the telescope's illumination pattern. The observations were completed as planned, and no problems were reported. 1.20 Completed Two Sets of WF/PC-2 5419 (A Search for Very Low-Luminosity Active Galactic Nuclei in Nearby Galaxies) The WF/PC-2 was used to make observations of galaxy NGC-3166, which is known to have ultraviolet bright, low-luminosity, active galactic nuclei. The observations were completed as planned, and no problems were reported. 1.21 Completed WF/PC-2 5092 (GTO Low Latitude Parallel Program: Cycle 4) The WF/PC-2 was used to make observations taken in parallel with the prime science observations. This is part of a survey to take pictures of a large number of fields within 30 degrees of the galactic plane. 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 : 21 Successful : 21 2.2 FHST Updates: Scheduled : 45 Successful : 45 2.3 Significant HSTARs: None 2.4 Operations Notes: Early this morning at 297/0640Z, the FOS autonomously safed. Data evaluation is in progress. The GHRS encountered a loss of lock on FGS #2 at 297/1001Z and failed to reacquire. HSTAR 4960 was written. 3.0 ANOMALY STATUS: 3.1 Significant New Anomalies: None 3.2 Significant Unresolved Anomalies: None 4.0 SIGNIFICANT FORTHCOMING EVENTS: Nothing at this time. /DMH -END-