HUBBLE SPACE TELESCOPE DAILY REPORT #1960 PERIOD COVERED: 0000Z (UTC) 09/10/97 - 0000Z (UTC) 09/11/97 Daily Status Report as of 254/0000Z 1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed STIS/CCD 7659 (Daily Darks to Update Acquisition Bad Pixel Table) The Space Telescope Imaging Spectrograph (CCD) was used to make dark calibration images in order to update the acquisition bad pixel table. Daily hot pixel lists can also be used for science data analysis. The observations were executed as scheduled, and no anomalies were noted. 1.2 Completed Two Sets of WF/PC-2 7625 (WF/PC-2 Cycle 7 Earth Flats) The WF/PC-2 was used to make a series of Earth flat calibration images. These flat fields will allow mapping of the OTA illumination pattern and will be used in conjunction with previous internal and external flats to generate new pipeline superflats. The observations were completed as planned, and no anomalies were reported. 1.3 Completed Two Sets of WF/PC-2 7621 (WF/PC-2 Cycle 7 Supplemental Darks PT1/3) The WF/PC-2 was used to make supplemental dark calibration images. This set of calibrations is intended to obtain 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. 1.4 Completed Four Sets of Sets of STIS/CCD 7783 (STIS) The Space Telescope Imaging Spectrograph (CCD) was used to make observations taken in parallel with the prime science. The target were listed as an unknown target. The observations were completed , and no problems were reported. 1.5 Completed Two Sets of WF/PC-2 7786 (Pure Parallel Archive Survey - Continuation) The WF/PC-2 was used to make observations as part of an archival survey program in which the images were taken in parallel with the prime science observations. These WF/PC-2 parallel observations were obtained in the ultraviolet in a search for interesting objects. The observations were completed as planned, and no problems were reported. 1.6 Completed Three Sets of NIC/1/2/3 7688 (ACCUM Darks) The Near Infrared Camera (Cameras One, Two, and Three) was used to measure dark current on individual pixels for a limited set of ACCUM exposure times in order to conduct an internal calibration of ACCUM mode. The observations were completed as scheduled, with no problems reported. 1.7 Completed NIC/2 7420 (A Near-Infrared Search for Very Low Mass Companions to Stars Within 10 Parsecs of the Sun) The Near Infrared Camera (Camera Two) was used to make searching observations for very low mass companions to variable star FI-Vir. This star is known to be within 10 parsecs of the Sun. The observations were executed as scheduled, and no anomalies were noted. 1.8 Completed STIS/CCD/NIC/1/2/WF/PC-2 7568 (Spectroscopy of 3C Radio Galaxy Optical Jets) The Space Telescope Imaging Spectrograph (CCD), the Near Infrared Camera (Cameras One and Two) and the WF/PC-2 were all used to make observations of the optical jets coming off of the radio galaxy 3C268.3. These data will be used to determine the nature of the phenomena: whether synchrotron jet radiation, entrained gas, ionized clouds or star-formation. These data will also be used to study the inner populations and dynamics of the galaxies. The observations were completed as scheduled, and no problems were reported. 1.9 Completed NIC/2 7369 (Dust Formation in Hot Stellar Winds: Infra-Red Imaging of the Wolf-Rayet Binary WR137) The Near Infrared Camera (Camera Two) was used to make observations of dust formations in the hot stellar wind of the Wolf-Rayet class, binary star WR-137 (A.K.A., HD192641). Ground-based IR photometry has shown that copious amounts of carbon-rich dust are formed just after periastron passage, when wind-wind collision compression is at its peak. The observations were executed as scheduled, and no anomalies were noted. 1.10 Completed WF/PC-2 6943 (WF/PC-2 Cycle 6: Throughput Verification for Narrow Band Filters) The WF/PC-2 was used to make observations of object K3-15 in order verify the throughput for the narrow band filters. This program will provide direct verification of throughput of narrow band filters through observations of emission line objects. The observations were completed as planned, and no anomalies were reported. 1.11 Completed STIS/CCD 7782 (STIS Non-Scripted Parallel Archive Proposal - Half Orbit) The Space Telescope Imaging Spectrograph (CCD) was used for a non-scripted parallel archive proposal (one-half orbit). The observations were executed as scheduled, and no anomalies were noted. 1.12 Completed NIC/1/2/3 7726 (NICMOS One Orbit Parallel) The Near Infrared Camera (Cameras One, Two and Three) was used to make a one orbit parallel calibration observations. The observations were executed as scheduled, and no anomalies were noted. 1.13 Completed WF/PC-2 6648 (The link between the UV Saturnian aurora and the polar stratospheric haze) The WF/PC-2 was used to make ultraviolet observations of the auroral zones on the planet Saturn. The purpose of these observations is manyfold. {1} To study the latitudinal, longitudinal and temporal variation of the aurora of both hemispheres. This result may be achieved by imaging a full planetary rotation using the UV sensitive Wood's filters of the WF/PC-2 camera. {2} To image polar caps in wavelengths without auroral contamination to obtain a multispectral high resolution mapping of the polar haze opacity and scattering properties. The observations were completed as planned, and no anomalies were reported. 2.0 FLIGHT OPERATIONS SUMMARY: 2.1 Guide Star Acquisitions: Scheduled Acquisitions : 8 Successful : 8 Scheduled Reacquisitions : 8 Successful : 8 2.2 FHST Updates: Scheduled : 10 Successful : 10 2.3 Operations Notes: The SSR interrupt log was dumped at 253/1903Z. 3.0 SIGNIFICANT FORTHCOMING EVENTS: Continuation of normal science observations and calibrations. /DMH