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HUBBLE SPACE TELESCOPE

DAILY REPORT #1663

PERIOD COVERED: 0000Z (UTC) 06/25/96 - 0000Z (UTC) 06/26/96

Daily Status Report as of 178/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

1.1 Completed WF/PC-2 6431 (Determination of the Extragalactric =
Distance Scale)

The WF/PC-2 was used to make observations of the galaxy NGC-4535 =
to be used in measuring the periods of Cepheid variable stars within this =
galaxy. This will allow for a more accurate estimate of the distances to =
these galaxies through the period-luminosity relation for the Cepheid =
stars. The observations were executed as scheduled, and no anomalies =
were noted.

1.2 Completed WF/PC-2 6187 (WF/PC-2 Cycle 5 Calibration: Earth Flat)

The WF/PC-2 was used to make Earth streak flat calibration images. =
These streak flats will be used to produce flat fields, to map the OTA =
illumination pattern and, in combination with other data, to produce new =
superflats. The observations were completed as planned, and no problems =
were reported.

1.3 Completed WF/PC-2 6557 (WF/PC-2 Imaging of Intermediate Redshift =
Absorption Selected Galaxies)

The WF/PC-2 was used to make observations of the galaxy Q1019-FIEL =
where a halo appears to be absorbing light from the background =
quasi-stellar object (QSO). The observations were completed as planned, =
and no problems were reported.

1.4 Completed FOS/RD 6577 (An Expanded Survey for Study of the =
Lyman-Alpha Line and QSO Mg II Absorption)

The Faint Object Spectrograph (Red Side) was used to make =
observations of the QSO MC1511+103 in order to make a survey of the =
Lyman-Alpha line and the 68 Mg II absorption line system. The =
observations were completed as scheduled, and no problems were reported.

1.5 Completed Two Sets of WF/PC-2 6188 (WF/PC-2 Cycle 5 Calibration: =
Dark)

The WF/PC-2 was used to make internal dark calibration images. =
The observations were completed as scheduled, and no problems were =
reported.

1.6 Completed WF/PC-2/ GHRS/1/ FOS/BL 6567 (Wind of Massive Stars in =
Nearby Galaxies)

The WF/PC-2 , the High Resolution Spectrograph (Side One) and the =
Faint Object Spectrograph (Blue Side) were all used to make observations =
of hot stars in the local-group, irregular galaxy NGC-6822. Detailed =
studies of the hot stellar populations in galaxies outside the Milky Way =
provide very important tests of the theories of stellar winds and star =
formation and evolution. The observations were executed as scheduled and =
no anomalies were noted.

1.7 Completed WF/PC-2 6614 (The Star Formation History of the =
Sagittarius Dwarf Spheroid Galaxy)

The WF/PC-2 was used to make photometric observations of stars =
within the newly-discovered dwarf spheroid galaxy SGR-DSPH3 located in =
Sagittarius. This is the nearest galaxy to the Milky Way. Stellar =
luminosities, colors, and metallicities will be measured. The =
observations were completed as scheduled, and no anomalies were reported.

1.8 Completed WF/PC-2 6250 (WF/PC-2 Cycle 5 Calibration: Internal =
Monitor)

The WF/PC-2 was used to make a series on internal calibration =
observations. Internal flats, biases, and K-Spot calibration images were =
taken. These observations are designed to monitor the health of the =
cameras. T he observations were executed as scheduled, and no anomalies =
were noted.

1.9 Completed GHRS/2 6687 (How Did Stars Evolve in the Early Universe? =
The Role of Metallicity)

The High Resolution Spectrograph (Side Two) was used to obtain =
spectra of the central star of the planetary nebula PK315-13. These =
spectra will be used to test and refine a new evolutionary scheme for low =
and intermediate mass stars. The observations were executed as =
scheduled, and no anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

2.1 Guide Star Acquisitions:

Scheduled Acquisitions : 4
Successful : 4

Scheduled Reacquisitions : 10
Successful : 10

2.2 FHST Updates:

Scheduled : 11
Successful : 11

2.3 Operations Notes:

HST operations did not make a planned move to the SAMS backup =
facility due to NASCOM line problems. When these problems are corrected, =
the move will be made and LAN testing in the MOR area can begin.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

Nothing at this time.

/DMH