HUBBLE SPACE TELESCOPE DAILY REPORT #1941 PERIOD COVERED: 0000Z (UTC) 08/13/97 - 0000Z (UTC) 08/14/97 Daily Status Report as of 226/0000Z 1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed 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 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. 1.3 Completed STIS/CCD 7665 (CCD Geometric Distortion) The Space Telescope Imaging Spectrograph (CCD) was used to make observations of the standard star HD120315 in order to derive the geometric distortion of CCD first order spectra for those cases {G230LB, G230MB at 1854A} that were missed in ground calibration. The observations were executed as scheduled, and no anomalies were noted. 1.4 Completed WF/PC-2 6435 (A WF/PC-2 Search for Surviving Binary Companions in SN Ia Remnants) The WF/PC-2 was used to make observations of the class Ia super nova remnant SN1006-Cen in order to search for surviving binary companions. The type Ia supernovae {SNe Ia} are widely believed to be explosions of white dwarfs undergoing binary mass accretion. The observations were completed as planned, and no anomalies were reported. 1.5 Completed Four 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. 1.6 Completed Four Sets of 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. 1.7 Completed STIS/MA2 7644 (STIS NUV-MAMA Monitoring Flats) The Space Telescope Imaging Spectrograph (MA2) was used to obtain Near Ultraviolet-MAMA flat-field observations for the construction of bi-monthly delta-flats. The observations were completed as planned, and no problems were reported. 1.8 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 BD+13D2681. This star is known to be within 10 parsecs of the Sun. The observations were executed as scheduled, and no anomalies were noted. 1.9 Completed NIC/1 7255 (NICMOS Observations of JVAS/CLASS Gravitational Lenses) The Near Infrared Camera (Camera One) was used to make observations of the JVAS class, gravitational lens, quasi-stellar source QSO-1938+6. The JVAS/CLASS radio survey has been the most successful to date at finding arcsecond-scale gravitational lenses, almost doubling the known number (11 lenses found of which 10 are new discoveries). The observations were executed as scheduled, and no anomalies were noted. 1.10 Completed Two Sets of STIS/CCD 7781 (STIS Non-Scripted Parallel Archive Proposal - Full Orbit) The Space Telescope Imaging Spectrograph (CCD) was used for a non-scripted parallel archive proposal (one full orbit). No details were given. The observations were executed as scheduled, and no anomalies were noted. 1.11 Completed STIS/MA1 7728 (STIS FUV-MAMA Monitoring Flats) The Space Telescope Imaging Spectrograph (MA1) was used for the STIS MAMA flat monitoring program. This program will obtain far-ultraviolet-MAMA flat-field observations for the construction of delta-flats for selected modes. The observations were completed as planned, and no anomalies were reported. 1.12 Completed NIC/1/2/3 7328 (High Resolution IR Imaging Survey (IRIS) of the Centers of the Nearest Active Galaxies) The Near Infrared Camera (Cameras One, Two and Three) was used to make high resolution infrared observations of the nearest active galaxy Markarian1 in order to study its inner nuclear region. Observing in the near-IR minimizes the dust obstruction and maximizes sensitivity to the old stellar population which dominates the mass. The observations were executed as scheduled, and no anomalies were noted. 1.13 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 ESO-549G2. 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. 1.14 Completed NIC/2/3 7424 (NICMOS Imaging of QSO Absorption-- Selected Galaxies at z > 1) The Near-Infrared Camera (Cameras Two and Three) was used to make observations of QSO/galaxy Q0450-132. The images will also be used to connect the absorption line properties to the galaxy morphological properties, inclination angles, and orientations in order to continue to explore the connection between the absorbing gas and the galaxies. The observations were completed as scheduled, and no anomalies were reported. 1.15 Completed WF/PC-2 7450 (The Formation of Bulges of Spiral Galaxies: Central Visual-Infrared Color Gradients) The WF/PC-2 was used to make observations of the bulge in spiral galaxy NGC-7331 in order to obtain high-resolution optical and near infrared images for a complete survey sample of bulges of spiral galaxies. The observations were completed as scheduled, and no anomalies were reported. 2.0 FLIGHT OPERATIONS SUMMARY: 2.1 Guide Star Acquisitions: Scheduled Acquisitions : 13 Successful : 13 Scheduled Reacquisitions : 5 Successful : 5 2.2 FHST Updates: Scheduled : 16 Successful : 16 2.3 Operations Notes: The EPS KRSWCC flight data base was installed at 225/1441Z. This software will provide an alternate method of battery charging that would not be adversely affected by possible entries into safemode. Part 1 of the functional test for this installation, due to run for approximately 24 hours, was begun at 225/1445Z and continues to run uneventfully. The STIS "bad pixel" table was uplinked at 225/2223Z. The SSR interrupt log was dumped at 226/0829Z. 3.0 SIGNIFICANT FORTHCOMING EVENTS: Continuation of normal science observations and calibrations. /DMH