HUBBLE SPACE TELESCOPE DAILY REPORT #1985 PERIOD COVERED: 0000Z (UTC) 10/16/97 - 0000Z (UTC) 10/17/97 Daily Status Report as of 290/0000Z 1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed Three 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. 1.2 Completed STIS/CCD 7802 (Daily Darks to Update Acquisition Bad Pixel Table) The Space Telescope Imaging Spectrograph (CCD) was used to make calibration observations to obtain daily darks to update the acquisition bad pixel table. These daily darks are intended to identify hot pixels for update to the acquisition on-board FSW hot 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. 1.3 Completed Two Sets of NIC/2 7795 (NICMOS MULTIACCUM Dark Characterization 1/8) The Near Infrared Camera (Camera Two) was used to obtain on-orbit darks for the MULTIACCUM predefined sequences requested by GOs, after day 233 of 1997. The observations were executed as scheduled, and no anomalies were noted. Dark 1.4 Completed Six Sets of STIS/CCD 7601 (CCD Dark and Bias Monitor) The Space Telescope Imaging Spectrograph (CCD) was used to conduct bias and dark monitoring. Also, observations were made to track the growth of hot pixels on the CCD in general and within the various target acquisition apertures specifically. The observations were completed as planned, and no anomalies were reported. 1.5 Completed WF/PC-2 7429 (Uranus' Vertical Haze Structure and its Variation With Latitude) The WF/PC-2 was used to make wide range ultraviolet observations of the planet Uranus in order to study its vertical haze structure and its variation with latitude. The wide wavelength range allows determination of aerosol sizes and spectral characteristics superior to previous work. The observations were executed as scheduled, and no anomalies were noted. 1.6 Completed NIC/2 7331 (Near-IR Properties of the Bulges of Spiral Galaxies) The Near Infrared Camera (Camera Two) was used to make infrared observations of the bulge in spiral galaxy NGC-5678. Near-IR data at HST resolution are essential for correcting for the effect of dust and will enable us to derive robust nuclear properties for the sample. The observations were executed as scheduled, and no anomalies were noted. 1.7 Completed Three Sets of NIC/1/2/3 7370 (The low-mass pre-MS stellar content of the 30-Dor starburst cluster) The Near Infrared Camera (Cameras One, Two and Three) was used to make observations of the low-mass, pre-main-sequence, stellar content of the starbursting region of the cluster 30-Dor. The observations would tell us whether the 30-Dor cluster can be regarded as a prototype young globular cluster. The observations were completed as scheduled, and no anomalies were reported. 1.8 Completed Nine Sets of STIS/CCD 7783 (STIS Parallel Science) The Space Telescope Imaging Spectrograph (CCD) was used to make observations taken in parallel with the prime science. The observations were completed, and no further problems were reported. 1.9 Completed Five 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. 1.10 Completed WF/PC-2 6855 (The Disks Around Young Stellar Objects) The WF/PC-2 was used to make observations of the disk surrounding the young stellar object COKU-TAU1. Circumstellar material has been detected at 1.3 mm around about 50% of the young (T<10^6 yr) stellar objects in the Taurus-Auriga molecular cloud. The observations permit an estimate of the material's spatial extent, mass and temperature. The observations were executed as scheduled, and no anomalies were noted. 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 Two Sets of NIC/1/2/3 7729 (NICMOS Short One Orbit Parallel) The Near Infrared Camera (Cameras One, Two, and Three) was used to obtain "JHK" imaging of sky regions while another instrument was prime. These observations were part of the short NICMOS one-orbit parallel program. The observations were executed as scheduled, and no anomalies were noted. 1.13 Completed NIC/1/2/3 7798 (NICMOS MULTIACCUM Dark Characterization of Pedestal F) The Near Infrared Camera (Cameras One, Two and Three) was used to make to make MULTIACCUM dark characterization calibration observations using Pedestal F. The purpose of this proposal is to obtain on-orbit darks for the MULTIACCUM predefined sequences requested by GOs, after day 233 of 1997. The observations were executed as scheduled, and no anomalies were noted. 1.14 Completed STIS/CCD/MA1 7392 (Raman scattering and X-ray ionization in LMC X-4) The Space Telescope Imaging Spectrograph (CCD/MA1) was used to make observations of LMCX-4, an X-ray pulsar with O star companion, in order to study its Raman scattering and X-ray ionization. The aim is to detect Raman scattered emission lines in high-resolution far-ultraviolet spectra and to study their orbital modulation. The observations were completed as planned, and no anomalies were reported. 1.15 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. 1.16 Completed WF/PC-2 6519 (Parallel High Resolution Imaging of Defuse Objects in the Magellanic Clouds) The WF/PC-2 was used to make high resolution observations of a defuse object located in the Large Magellanic Cloud. These data will allow the detailed study of the morphology and spatial relationship of various inter-stellar processes. These observations were taken in parallel with the prime science observations. The observations were executed as scheduled, and no anomalies were noted. 2.0 FLIGHT OPERATIONS SUMMARY: 2.1 Guide Star Acquisitions: Scheduled Acquisitions : 7 Successful : 7 Scheduled Reacquisitions : 6 Successful : 6 2.2 FHST Updates: Scheduled : 11 Successful : 11 2.3 Operations Notes: Per HSTAR 6205, STIS MCE-2 reset outside the SAA at 290/054119Z. The MAMA2 HV was off at the time of the reset. Although several iterations of STIS proposal 7783 (STIS Parallel Science) are scheduled for this morning, it was decided, after consultation the the STScI and SEs, to postpone recovery until later this morning. The effects on proposal 7783 will be described in the next report. ESTRs #2 and #3 were reconditioned by 290/0900Z per ROP RD-7. 3.0 SIGNIFICANT FORTHCOMING EVENTS: Continuation of normal science observations and calibrations. /DMH