Hubble Space Telescope Daily Report #2758 11/29/00
HUBBLE SPACE TELESCOPE
DAILY REPORT #2758
PERIOD COVERED: 0000Z (UTC) 11/28/00 – 0000Z (UTC) 11/29/00
Daily Status Report as of 334/0000Z
1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:
1.1 Completed Two Sets of WF/PC-2 8826 (Cycle 9 Supplemental Darks pt 1)
The WF/PC-2 was used to perform a T dark calibration program that obtains three dark frames every day in order to provide data for monitoring and characterizing the evolution of hot pixels. There were no reported anomalies.
1.2 Completed Two Sets of STIS/CCD 8837 (CCD Dark Monitor-Part 1)
The Space Telescope Imaging Spectrograph (CCD) was used to monitor the darks. The proposal completed with no reported problems.
1.3 Completed FGS/1 8890 (Verifying the Enhanced FGS Transfer Mode Flight Software)
FGS-1 was used to gather the data needed to evaluate and verify the enhanced FGS transfer mode flight software (FSW). The FSW that controls the FGS while it scans a target during a Transfer mode observation has been enhanced {via a modified #59 command} to cause the object’s S-curves {x and y axis} to both occur very near the center of the scan path. This will compensate for the coarse track to fine lock bias, which until now has forced observers to use long scans, on the order of 1.5", to assure that both the x and y axis S-curves and are fully sampled. The proposal completed with no reported problems.
1.4 Completed WF/PC-2 8805 (POMS Test Proposal: WFII Parallel Archive Proposal Continuation)
The WF/PC-2 was used to perform a generic target version of the WFPC2 Archival Pure Parallel program. The program will be used to take parallel images of random areas of the sky, following the recommendations of the Parallels Working Group. The proposal completed with no reported problems.
1.5 Completed STIS/CCD 8838 (Bias Monitor – Part 1)
The Space Telescope Imaging Spectrograph (CCD) was used to monitor the bias in the 1×1, 1×2, 2×1, and 2×2 bin settings at gain=1, and 1×1 at gain = 4, to build up high-S/N superbiases and track the evolution of hot columns. The proposal completed nominally.
1.6 Completed Two Sets of STIS/CCD 8840 (Read Noise Monitor)
The Space Telescope Imaging Spectrograph (CCD) was used to measure the read noise of all the amplifiers on the STIS CCD using pairs of bias frames. Full frame and binned observations are made in both Gain 1 and Gain 4, with binning factors of 1 x 1, 1 x 2, 2 x 1 and 2 x 2. All exposures are internals. The observations completed with no reported problems.
1.7 Completed WF/PC-2 8586 (Observations of Astrophysically Important Visual Binaries)
The WF/PC-2 was used to continue the Cycle 7-8 Long-Term project. The program consists of annual or biannual WFPC2 or FGS observations of three visual binary stars that will ultimately yield fundamental astrophysical results, once their orbits and masses are determined. Our targets are the following: {1} Procyon {P=41 yr}, for which our first WFPC2 images yielded an extremely accurate angular separation of the bright F star and its very faint white-dwarf
companion. There were no reported problems.
1.8 Completed WF/PC-2/STIS/CCD 8324 (The Structure and Kinematics of Irradiated Disks and Associated High Velocity Features in Orion)
Both the WF/PC-2 and the Space Telescope Imaging Spectrograph (CCD) were used to make observations of high velocity feature M-42-114-42 located within the Orion Nebula. The STIS provides us with a unique opportunity to study the early evolution of proto-planetary disks and their chances of survival in the harsh irradiated environments of OB class associations where most stars form. A wavelength calibration observation was also taken. The observations were completed as planned, and no anomalies were reported.
1.9 Completed WF/PC-2 8683 (Imaging Of Brightest Cluster Galaxies: The High End Of The Black Hole Mass Distribution)
The WF/PC-2 was used to make kinematic black hole detections in galaxies to decide whether they indicate that the mass correlates with both optical luminosity and radio power. The observation completed with no reported problems.
1.10 Completed STIS/CCD 8562 (Probing the Large Scale Structure: Cosmic Shear Observations)
The Space Telescope Imaging Spectrograph (CCD) was used to probe the distortion of light bundles from distant galaxies, looking at the statistical properties of the intervening inhomogeneous {dark} matter distribution. The proposal completed nominally.
1.11 Completed STIS/CCD 8293 (Spatial Structure of Super Star Clusters in NGC 1569)
The Space Telescope Imaging Spectrograph (CCD) was used to perform spatially-resolved long-slit spectroscopy of three of the nearest and brightest super stat clusters (SSCs) in NGC 1569. A fortuitous alignment allows positioning the three SSCs {A1, A2, and B} simultaneously in the slit. The observations completed nominally, with no reported anomalous activity.
1.12 Completed STIS/MA1 8721 (An UV Imaging Survey of IR-Bright Star- Forming Galaxies)
The Space Telescope Imaging Spectrograph (MA1) was used to carry out a UV {~1, 600 Angstrom} snapshot imaging survey of all the actively star-forming galaxies detected by ISO at Lambda>170 Mum and closer than cz=9000 km/s. The sample covers a large region in the parameter’s space of morphology, luminosity, metallicity, and star formation intensity. There were no reported anomalies.
1.13 Completed STIS/MA1 8843 (Cycle 9 MAMA Dark Measurements)
The Space Telescope Imaging Spectrograph (MA1) was used to perform the routine monitoring of the MAMA detector dark noise. The proposal completed nominally.
1.14 15 Completed STIS/CCD/MA2 8661 (UV Spectroscopy of the Giant Planet Atmospheres)
The Space Telescope Imaging Spectrograph (CCD and MA2) was used to observe the atmosphere of Neptune in the ~1600-3100 Angstrom spectral region. Later, the remaining giant planets, Jupiter, Saturn, and Uranus will be observed. Analyses of these observations will be used to determine the abundance and altitude profiles of gaseous absorbers and aerosols from the millibar region to hundreds of millibars. The proposal completed with no reported problems.
1.15 Completed WF/PC-2 8823 (Decontaminations and Associated Observations Pt. 2/4)
The WF/PC-2 was used for the monthly WFPC2 decons. Also included were instrument monitors tied to decons: photometric stability check, focus monitor, pre- and post-decon internals {bias, intflats, kspots, & darks}, UV throughput check, VISFLAT sweep, and internal UV flat check. There were no reported problems.
2.0 FLIGHT OPERATIONS SUMMARY:
2.1 Guide Star Acquisitions:
Scheduled Acquisitions: 7
Successful: 7
Scheduled Re-acquisitions: 10
Successful: 10
2.2 FHST Updates:
Scheduled: 15
Successful: 15
2.3 Operations Notes:
The SSR EDAC error counter was cleared three times, per ROP SR-1A.
A TTR was written for a required re-transmit during a NSSC-1 load at 333/1941Z.
SI C&DH errors were reset at 333/2000Z, using ROP NS-5.
The two-day Battery #1 capacity test started at approximately 333/2040Z. The operations request directing the test was completed through the start of battery discharge at 333/2144Z. Upon the next entry into orbit day, the section switch was verified through current flow. Battery discharge continued nominally. In the following orbit night, Batteries #5 Ns #6 impedance calculation showed a drop from approximately 19 mOhms to approximately 13 mOhms and later, during the same orbit night, returned to 19 mOhms. The same sequence occurred during the next orbit
night. Contingency actions during the period of discharge were completed (except for Exec 101) by 334/0233Z. With Project approval, the test was terminated at 334/0235Z and the HST was re-configured to a six-battery system. Flight software will be re-configured to a six-battery system once all batteries have stabilized. Analysis of the event is currently underway.
3.0 SIGNIFICANT FORTHCOMING EVENTS:
Continuation of normal science observations and calibrations.