Hubble Space Telescope Daily Report #2678 08/03/00
HUBBLE SPACE TELESCOPE
DAILY REPORT #2678
PERIOD COVERED: 0000Z (UTC) 08/02/00 – 0000Z (UTC) 08/03/00
Daily Status Report as of 216/0000Z
1.0 OBSERVATIONS SCHEDULED AND ACCOMPLISHED:
1.1 Completed Four Sets of STIS/CCD 8808 (POMS Test Proposal: STIS Non-Scripted Parallel Proposal Continuation III)
The Space Telescope Imaging Spectrograph (CCD) was used to make non-scripted, parallel observations as part of a POMS test proposal. The observations completed with no anomalous activity.
1.2 Completed STIS/CCD/MA1 7345 (Origin and Physical Conditions in the Local Lyman-Alpha Forest)
The Space Telescope Imaging Spectrograph (CCD and MA1) was used to make observations of PG1351+640 in order to study the origin and physical conditions in the local Lyman-Alpha forest. A wavelength calibration image was also taken. The observations were executed as scheduled, and no anomalies were noted.
1.3 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. The proposal completed with no reported problems.
1.4 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.
1.5 Completed WF/PC-2 8544 (POMS Test Proposal: WFII Backup Parallel Archive Proposal II)
The WF/PC-2 was used to execute a POMS test proposal that was designed to simulate scientific plans. No problems were encountered.
1.6 Completed WF/PC-2 8601 (A Snapshot Survey of Probable Nearby Galaxies)
The WF/PC-2 was used to continue the very successful snapshot survey in order to use the high spatial resolution of HST to determine whether selected galaxies are nearby on the basis of resolution into stars, and the magnitudes and colors of the brightest stars. There were no reported problems.
1.7 Completed STIS/CCD 8439 (Bias Monitor-Part 2 C8)
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 with no reported problems.
1.8 Completed WF/PC-2 8726 (Cometary Knots in Planetary Nebulae)
The WF/PC-2 was used to make second epoch observations of the Cometary Knots in NGC 7293 in order to get a better idea of just how these objects are formed by comparison of their spatial motions with that of the ambient gas. The observations completed with no reports of problems.
1.9 Completed STIS/CCD 8072 (Emission Line Imaging of Galactic Targets)
The Space Telescope Imaging Spectrograph (CCD) was used to obtain pure parallel CCD observations in the [OII], [OIII] and 50CCD filters of galactic supernova remnants, selected extended planetary nebulae and HII regions. There were no reported problems.
1.10 Completed STIS/CCD 8437 (Dark Monitor-Part 2 C8)
The Space Telescope Imaging Spectrograph (CCD) was used to monitor the darks. The proposal completed nominally.
1.11 Completed Three Sets of WF/PC-2 8445 (WF/PC-2 Cycle 8 Earth Flats)
The WF/PC-2 was used to make Cycle 8 Earth flat calibration observations. This is to obtain sequences of earth streak flats to construct high quality flat fields for the WF/PC-2 filter set. The observations were executed as scheduled, and no anomalies were noted.
1.12 Completed STIS/CCD 8411 (STIS CCD Spectroscopic Flats C-8)
The Space Telescope Imaging Spectrograph (CCD) was used to obtain CCD flats in the spectroscopic mode. The observations were completed as scheduled, and no anomalies were reported.
1.13 Completed Two Sets of STIS/CCD 8413 (STIS Yearly CCD Wavelength Monitor)
The Space Telescope Imaging Spectrograph (CCD) was used to execute the yearly CCD wavelength monitoring program. This is a continuation of program #7650 that was executed during in Cycle-7. The observations were completed as planned, and no problems were reported.
1.14 Completed FGS/1 8772 (The Mass of the Classical Cepheid ADS 14859 Cycle 9)
FGS1 was used to observe the system ADS 14859 = HR 8157 = V1334 Cyg that provides a unique opportunity to determine a Cepheid mass because it has a visual binary orbit. The system consists of a wide pair and a newly discovered close system which consists of the Cepheid and a yet uncharacterized companion {Ab}. No mass information will be available, however, without the proposed joint HST FGS and STIS observations, particularly of the Ab star which cannot be observed from the ground. The proposal completed nominally.
1.15 Completed WF/PC-2/STIS/CCD 8675 (The Massive Star Content of NGC 6822)
The WF/PC-2 and the Space Telescope Imaging Spectrograph (CCD) were used to characterize the young, coeval stellar population discovered with WFPC2 multiband imaging in a NGC6822 star forming region, with follow-up spectroscopy of the massive star candidates. The proposal completed with no reported problems.
1.16 Completed WF/PC-2 8669 (Merger-Driven Evolution Of Galactic Nuclei: Observations Of The Toomre Sequence)
The WF/PC-2 was used to observe galaxy mergers that are believed responsible for triggering starburst and AGN activity in galaxies, and even perhaps transforming spiral galaxies into ellipticals. The proposal completed nominally.
1.17 Completed WF/PC-2 8162 (Identifying The Hidden Phases Of Galaxy Evolution)
The WF/PC-2 was used to perform deep surveys in the sub-mm waveband that are revealing a population of very luminous dusty galaxies at high redshifts, which are {a} as a population, producing stars at a rate as large or larger than the optically selected galaxy population at high redshifts and thus presumably producing a substantial fraction of all stars that have ever been produced; and {b} doing so, individually, in systems with bolometric luminosities (i.e. star-formation rates} that are very much larger than typically seen in the optically-selected population). The observations completed with no anomalous activity.
1.18 Completed STIS/CCD 8685 (Isolated Compact Stellar Systems In The Fornax Cluster)
The Space Telescope Imaging Spectrograph (CCD) was used to observe a new population of compact objects in the center of the Fornax Cluster. These objects have spectra typical of old stellar systems, but are unresolved in ground- based imaging. They are all at least 10 times more luminous than any Galactic globular clusters, but fainter than any known compact dwarf galaxies. They may be a new class of intermediate object, neither globular clusters nor dwarf galaxies but something in between. The observations completed nominally.
2.0 FLIGHT OPERATIONS SUMMARY:
2.1 Guide Star Acquisitions:
Scheduled Acquisitions: 7
Successful: 7
Scheduled Re-acquisitions: 8
Successful: 8
2.2 FHST Updates:
Scheduled: 17
Successful: 17
2.3 Operations Notes:
Preparations for three visits to a target of opportunity (Comet Linear) on day 218 are proceeding. The loads have been
generated. Sign-offs are in progress.
The SSR EDAC error counter was cleared three times, using ROP SR-1A.
A TTR was written for a lost SSA service when the TDRS antenna slewed off the HST during a dump. Accordingly, the SSR pointers were set at 215/1313Z per ROP SR-3.
There was a STIS EMC retry at 215/194401Z. The STIS flight software error counter was reset at 215/2004Z as directed by ROP NS-12.
Another TTR was written for a MA return service scheduled at 216/0014Z in which the return frequency did not match the antenna frequency.
3.0 SIGNIFICANT FORTHCOMING EVENTS:
Continuation of normal science observations and calibrations.