HUBBLE SPACE TELESCOPE DAILY REPORT #1207 PERIOD COVERED: 0000Z Daily Status Report as of 234/1200Z. 1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed FOC/96 5644 (UV Observations of Globular Clusters: Rpt for HOPR 205) The Faint Object Camera (f/96) was used to make ultraviolet observations of the core region of the dense globular cluster NGC-6397 to try to learn more about its exotic objects such as blue stragglers, and cataclysmic variables (et al.). The observations were completed as planned, and no problems were reported. 1.2 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. 1.3 Completed WF/PC-2 5630 (Luminus Stars in Old Stellar Populations) The WF/PC-2 was used to make observations of NGC-6397 to study its luminous stars which are located in old stellar populations. The observations were executed as scheduled, and no anoalies were noted. 1.4 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. 1.5 Completed WF/PC-2 5562 (WF/PC-2 Cycle 4 Calibration: Internal Monitor 3: Darks) The WF/PC-2 was used to obtain several 30-minute long, dark exposures to provide ongoing calibration of the CCD dark current and to monitor and characterize the evolution of hot pixels. The observations were executed as scheduled, and no anomalies were noted. 1.6 Completed FOC/96 5138 (A Deep Color-Magnitude Array of NGC-6397) The Faint Object Camera (f/96) was used to make one centered and two offset fields-of-view observations of the the globular cluster NGC-6397. This will be to construct a color-magnitude diagram and to study the luminosity functions of its faint stars. It was reported that this proposal was executed with the wrong roll angle, and was classified as a bad implementation. 1.7 WF/PC-2 5429 (Imaging Polarimetry of Extended UV Emission in Radio Galaxies: Cycle 4) The WF/PC-2 was used to make extended ultraviolet observations of the high redshift radio galaxy 3C368 with the polarizer. The observations were executed as scheduled, and no anomalies were noted. 1.8 Completed 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 UGC-10683B, and MARK915 to study their interactions between the central engine, the stars, and the interstellar matter in the AGNs. Due to a failure to obtain Fine Lock the observations were completed in Coarse Track. There also was one recentering event reported which lasted for four seconds. 1.9 Completed Two Sets of WF/PC-2 5342 (UV Imaging of Intermediate- Age Magellanic Cloud Clusters) The WF/PC-2 was used to make ultraviolet observations of star clusters NGC-2041, and NGC-2134 which are located in the Large Magellanic Cloud to determine the nature of their hot stellar components. The observations were executed as scheduled, and they were reported to be okay. 1.10 Completed WF/PC-2 5446 (The Nuclei of Nearby S0 and Spiral Galaxies: A PC Snapshot Imaging) The WF/PC-2 was used to make observations of the core region of galaxy NGC-4800 to provide statistics on the nuclear cups, stellar condensations, and inner stellar disks and dust lanes. The observations were executed as scheduled, and no anomalies were noted. 1.11 Completed WF/PC-2 5569 (WF/PC-2 Cycle 4 Calibration: Internal Flats) The WF/PC-2 was used to make flat field calibration images with the VIS lamp, and the internal source. The observations were completed as planned, and no problems were reported. 1.12 Completed GHRS/2 5168 (Io Proton Aurora?: Cycle 4 Medium) The High Resolution Spectrograph (Side Two) was used to make spectroscopic observations of Jupiter's moon Io while it is immersed in the plasma torus. This is to search for Lyman-Alpha emission caused by protons trapped in Jupiter's magnetosphere. The observations were executed as scheduled, and no anomalies were noted. 1.13 Completed FOS/BL 5658 (White Dwarf Calibration) The Faint Object Spectrograph (Blue Side) was used to make absolute sensitivity calibrations of the detectors using standard white dwarf star GD71. The observations were executed as planned, and no anomalies were noted. 1.14 Completed WF/PC-2 5476 (Continuum Snapshots of 3CR Radio Galaxies) The WF/PC-2 was used to make snapshot images of radio galaxy 3C158.0 as part of a continuum survey and to study the galaxy's morphology. The observations were executed as scheduled, and no anomalies were noted. 1.15 Completed WF/PC-2 5207 (The Stellar Population of the Galactic Bulge) The WF/PC-2 was used to make images of the dense star field Sgr-I which is located at low galactic latitude (about -2.6 Degrees) to study the luminosity function of the stars in the galactic bulge. The observations were completed as planned, and no problems were reported. 1.16 Completed FGS 5333 (Linking the HIPPARCOS to the Extragalactic Reference frame: BR12-23, Part 2) The FGSs were used to make astrometric observations of several stars (i.e., 2128-123IN, 940-REF, 941-REF, 942-REF, INCA221-13 ) whose apparent positions lie near extragalactic objects. All of these objects have been observed by the HIPPARCOS satellite. The intent is to tie the HIPPARCOS reference frame to the extragalactic reference frame. The observations were executed as scheduled, and no anomalies were noted. 1.17 Completed WF/PC-2 5370 (HST Medium-Deep Survey: Cycle 4 High, High Galactic Latitude) The WF/PC-2 was used in parallel with the prime science observations to make high galactic latitude observations as part of a medium-deep sky survey. It was reported that during two observations the guide star acquisition failed to attain Fine Lock, and the observations were completed in Coarse Track. 1.18 Completed WF/PC-2 5312 (A Deep Imaging Search for the Source of the Short Period Comets) The WF/PC-2 was used to search for possible comets in the Kuiper belt (FIELD-0431). The observations were completed as scheduled, and no anomalies were noted. 2.0 FLIGHT OPERATIONS SUMMARY: 2.1 Guide Star Acquisitions: Scheduled Acquisitions : 13 Successful : 11 At 232/1638Z The acquisition search limit was exceeded on FGS #1, and fine lock failed to coarse track. Subsequent acquisitions were successful. At 233/1402Z, during a ZOE, an acquisition came out in coarse track. Subsequent acquisitions were successful. Scheduled Reacquisitions : 16 Successful : 15 A FHST update failed at 232/333Z during a ZOE. 2.2 FHST Updates: Scheduled :34 Successful :33 2.3 Significant HSTARs: None 2.4 Operations Notes: There were no significant problems onboard the HST this weekend, although early in the period several scientific proposals were impacted by guide star acquisition pointing problems that are still undergoing investigation. The first SPC load using Co-Processor shared memory was uplinked on Sunday afternoon. There were no operational difficulties with either the uplink or the subsequent dump, and operations are proceeding nominally. 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-