HUBBLE SPACE TELESCOPE DAILY REPORT #1983 PERIOD COVERED: 0000Z (UTC) 10/14/97 - 0000Z (UTC) 10/15/97 Daily Status Report as of 288/0000Z 1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED: 1.1 Completed Five Sets of 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. 1.2 Completed Two sets of NIC/1/2/3 7328 (High Resolution IR Imaging Survey (IRIS) of the Centers of the Nearest Active Galaxies) The Near Infrared Camera (Camera One, Two and Three) was used to make high resolution infrared observations of the nearest active Markarian galaxies NGC-7319 and ESO362-G08 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. 1.3 Completed STIS/MA1 7669 (Incidence Angle Correction for Non-Concentric Slits-MAMA) The Space Telescope Imaging Spectrograph (MA1) was used to make calibration images needed to find the incidence angle correction for non-concentric slits-MAMA. This test will provide incidence angle corrections for MAMA observations using non-concentric slits. This tests fills in missing calibrations from ground testing. The observations were completed as planned and no anomalies were reported. 1.4 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. 1.5 Completed STIS/CCD/MA1/MA2 7582 (Spatial Distribution of Io's Extended UV Emissions) The Space Telescope Imaging Spectrograph (CCD/MA1/MA2) was used to take measurements of the spatial distribution of Io's sulfur and oxygen UV emissions during western elngation. A wave length calibration image was also taken. The proposal completed as planned, and no problems were reported. 1.6 Completed WF/PC-2 7623 (WF/PC-2 Cycle 7 Internal Flats) The WF/PC-2 was used to make a set of internal Cycle 7 calibration flats which are designed to monitor the pixel to pixel flat field response and the visflat lamp degradation, as well as detect any possible changes due to contamination. These calibration observations were completed as planned, and no problems were 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 HD191849. 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 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. 1.9 Completed Eight 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 problems were reported. 1.10 Completed Five Sets of STIS/CCD 7620 (WF/PC-2 CYCLE 7 Standard Darks) The Space Telescope Imaging Spectrograph (CCD) was used to make a disk calibration. This dark calibration program obtains dark frames every week in order to provide data for the ongoing calibration of the CCD dark current rate, and to monitor and characterize the evolution of hot pixels. Over an extended period these data will also provide a monitor of radiation damage to the CCDs. The observations were executed as scheduled, and no anomalies were noted. 1.11 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. 1.12 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 Ine and Two) and the WF/PC-2 were all used to make observations of the optical jets coming off of the radio galaxy 3C78. 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. 1.13 Completed NIC/2 7330 (The Fueling of Active Nucleii: A NICMOS Snapshot Survey) The Near Infrared Camera (Camera Two) was used to probe the dark matter distribution of NGC-4143 far from the center by observing intervening absorption from the MgII doublet (lambda 2800) in the spectrum of one background QSO located in a geometrically optimal position. HST observations are required because this feature is in a wavelength range not accessible from the ground, and the QSO magnitudes and expected strength of absorption make IUE observations unfeasible. The proposal completed as expected with no anomalies. 1.14 Completed WF/PC-2 6935 (WF/PC-2 Cycle: Photometric Transformation) The WF/PC-2 was used to make observations of object NGC-2682 in order to perform photometric transformations. This is a series of observations that will be used to extend the WF/PC-2 photometric transformation to include the Stromger and Johnson-Cousins systems. The observations were completed as planned and no problems were reported. 1.15 Completed Two Sets of 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 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). The observations were executed as scheduled, and no anomalies were noted. 1.17 Completed NIC/3 7806 (NICMOS GRISM Verification Test) The Near Infrared Camera (Camera Three) was used to perform a verification test by making observations of NGC-4151. This is a validation of the operations of the two NICMOS grisms used in the HDF observations, and supply of the initial level of calibration for spectroscopic observations. The observations were executed as scheduled, and no anomalies were noted. 2.0 FLIGHT OPERATIONS SUMMARY: 2.1 Guide Star Acquisitions: Scheduled Acquisitions : 12 Successful : 12 Scheduled Reacquisitions : 4 Successful : 4 2.2 FHST Updates: Scheduled : 26 Successful : 26 2.3 Operations Notes: The RMGA was successfully turned on and off at 287/1712Z. The STIS bad pixel table was uplinked at 287/1825Z. The STIS MAMA1 MCE reset outside the boundaries of an SAA at 287/2323Z. ROP NS-14 was invoked at 288/0057Z, and the STIS MAMA1 was successfully recovered. No STIS proposals were affected. STIS proposal 7392, which began at 288/010616Z executed nominally. 3.0 SIGNIFICANT FORTHCOMING EVENTS: Continuation of normal science observations and calibrations. /DMH