HUBBLE SPACE TELESCOPE DAILY REPORT #887 PERIOD COVERED: 0800 EST Daily Status Report as of 134/1200Z. 1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed FOS/RD 4817 (Quasar Absorption Line Survey: Cycle 2 Observations) The Faint Object Spectrograph (Red Side) was used to make three observations of quasar PG1718+481. Both onboard target acquisitions were successful. All three images were reported to look fine. 1.2 Completed FOC/96 3504 (High Spatial Resolution Imaging and Spectroscopy of AGNs: Cycle 2) The Faint Object Camera was used to make polarization images of the active galactic nucleus of radio galaxy 3C305. Its is hoped that this will proved information about the source hidden behind the obscuring torus. Six images were received and displayed. There were two recentering events reported, one for the second and one for the fourth images. 1.3 Completed WFC 4849 (GTO High Latitude Parallel Program: Cycle 3 High) The Wide Field Camera was used to make high latitude sky survey observations taken in parallel with the prime science observations. Two observations were received and displayed. No unexpected problems were noted. 1.4 Completed FOC/96 3801 (Search for QSOs Suitable for Subsequent Observation of He II) The Faint Object Camera (f/96) was used to make two images of quasi-stellar object 2204-408 to measure its levels of ultraviolet flux. It is hoped that this object can be used for future observations with the GHRS and FOS. The first image was reported to be okay. A recentering even was reported to have occurred during the second image exposure. 1.5 Uplinked Updated Ephemeris Tables, Per MOSES 2871 1.6 Completed GHRS/2 3664 (Probing the Gas of the Superbubble LMC2) The High Resolution Spectrograph was used to make observations of OB class star SK69276 which is located in Superbubble #2 in the Large Magellanic Cloud. Four observations were received in real time. The flux level was reported to be 7789. 1.7 Completed FOS/BL 4054 (Probing the Nuclear Regions of Seyfert galaxy NGC-5548) The Faint Object Spectrograph (Blue Side) was used to make spectral observations of Seyfert galaxy NGC-5548 to look for time variations in its continuum, and emissions in Helium II and Carbon IV. The observations were executed as scheduled, and no problems were reported. 1.8 Completed WFC 4381 (HST Medium-Deep Survey - Cycle 3) The Wide Field Camera was used to make some high latitude medium-deep sky survey images (Cycle 3) taken in parallel with the prime science observations. The OSS monitor the observations and assessed the data quality. No problems were reported. 2.0 FLIGHT OPERATIONS SUMMARY: 2.1 Guide Star Acquisitions: Scheduled Acquisitions : 4 Successful : 4 Scheduled Reacquisitions : 8 Successful : 8 Losses of Lock : 0 2.2 FHST Updates: Scheduled : 9 Successful : 9 2.3 Significant HSTARs: None 2.4 Operations Note: Week Summary (5/7/92 - 5/14/93): Wednesday May 12, 1993 Bus C Gyro 1 Turn-on Test The Bus C activation and Gyro 1 turn-on test was executed on the spacecraft on Tuesday, May 11. Commands to close Bus C were executed about 2:57 PM local time. Analysis of the R format data showed a raise in current of about 11 amps for about 300 milliseconds. This appears to have been the transfer switch closing. Commands to turn-on Gyro 1 were sent about 5:07 PM local time. The gyro did not come on. A second try to command the gyro on was made and this was also unsuccessful. A second Bus C activation was done about 8:13 PM Tuesday night. Bus C was commanded open and then commanded closed again. This second activation was done to further characterize the current profile of the transfer switch closing. A similar, but not identical, signature was observed during the second Bus C activation. Bus C was commanded open and the spacecraft was restored to normal operational configuration. Thursday May 13, 1993 The GSFC Internal Simulation (Type 1 + Replan) was conducted on Wednesday, May 12, and Thursday May 13. No major problems were reported. 3.0 ACTIVITIES SCHEDULED FOR NEXT REPORTING PERIOD: 3.1 Complete GHRS/2 3880 (Curcumstellar and Interstellar Absorption Lines in Planetary Nebulae) 3.2 Complete FGS 4724 (Seven Point of Light Cycle 2 Calibration) 3.3 Complete GHRS/2 3496 (An Ultraviolet Atlas of Sirius: Constraining Model Stellar Atmospheres) 3.4 Complete WFC 4207 (WF/PC cycle 2 Calibration: photometric Calibration Monitor) 3.5 Complete Two Sets of FOS/BL 4054 (Probing The Nuclear Regions of the Seyfert Galaxy NGC-5548) 3.6 Complete Two Set of WFC 4381 (HST Medium-Deep Survey - Cycle 3) 3.7 Complete FOC/96 4804 (UV Imaging of Nearby Galaxies with the FOC/96) 3.8 Complete WFC/PC 4109 (WF/PC Cycle 2 Calibration: Rapid Internal Monitor) 3.9 Complete PC 4712 (WF/PC Cycle 2 Calibration: Measles Monitor) 3.10 Uplink Updated Ephemeris Tables, Per MOSES 2871 3.11 Complete GHRS/2 3513 (Non-Lte Analysis of the Population II Post-AGB Stars ROB 162 and K648) 4.0 ANOMALY STATUS: 4.1 Significant New Anomalies: None 4.2 Significant Unresolved Anomalies: Implementation of the seven strategies to extend the operational life of the Fine Guidance Sensor (FGS) units continued to make good progress. Efforts on Stategy-1, maximizing the use of fine lock and minimizing the use of course track, have produced significant results. 5.0 SIGNIFICANT FORTHCOMING EVENTS: Nothing at this time. /DMH -END-