HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2194

PERIOD COVERED:  0000Z (UTC) 08/24/98 - 0000Z (UTC) 08/25/98

Daily Status Report as of 237/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed Five Sets of WF/PC-2 7620 (WF/PC-2 Cycle 7 Standard Darks)

       The WF/PC-2 was used to make a series of Cycle 7 standard dark
calibration images.  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.  As described in 2.1 and HSTAR 6635, the acquisition for the fourth
iteration of this proposal defaulted to fine lock on one FGS only.
Otherwise, the observations were executed as scheduled, and no further
anomalies were noted.

   1.2 Completed Two Sets of STIS/CCD 7948 (CCD Dark and Bias Monitor --
Cont. to Dec. 98)

       The Space Telescope Imaging Spectrograph (CCD) was used to measure
CCD dark current and bias rates for the two supported amplifier settings
{GAIN=1 and GAIN=4} in order to gather data for making superdarks and
superbiases.  The data will be used to track the growth of hot pixels on
the CCD in general and within the various target acquisition apertures
specifically.  The observations were executed as scheduled, and no
anomalies were noted.

   1.3 Completed Two Sets of NIC/1/2/3 7850 (Cosmological Parameters Omega
and Lambda from High-Z Type Ia Supernovae)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the type Ia super novae SN988 and SN98142 in order to
obtain the cosmological parameters Omega and Lambda.  HST can directly
measure the cosmological parameters, Omega, Lambda, and thus the curvature,
Omega_k, using Type Ia supernovae {SNe Ia} as calibrated standard candles.
The observations were executed as scheduled, and no anomalies were noted.

   1.4 Completed Seven Sets of WF/PC-2 7909 (POMS Test Proposal: WF II
Parallel Archive Proposal)

       The WF/PC-2 was used to make parallel observations as part of the
POMS test proposal.  This test proposal is designed to simulate scientific
plans.  As described in 2.1 and HSTAR 6635, the acquisition for the sixth
iteration of this proposal defaulted to fine lock on one FGS only.
Otherwise, the observations were completed as planned, and no further
problems were reported.

   1.5 Completed Three Sets of WF/PC-2 7712 (WF/PC-2 Cycle 7 Supplemental
Darks pt2/3)

       The WF/PC-2 was used to make a series of Cycle 7 supplemental
calibration darks.  This dark calibration program obtains 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.

   1.6 Completed Seven Sets of STIS/CCD 8062 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal Continuation)

       The Space Telescope Imaging Spectrograph (CCD) was used to make high
galactic latitude observations take in parallel with the prime science
observations.  The observations were completed as planned, and no problems
were reported.

   1.7 Completed NIC/2 7879 (Nuclear Rings in the IR: Hidden Super Star
Clusters)

       The Near Infrared Camera (Camera Two) was used to make observations
of the galaxy NGC-5248 in order to search in the infrared for star bursting
nuclear rings.  The rings contain large populations of super star clusters
similar to those recently discovered in other types of starburst systems.
The observations were completed as planned, and no anomalies were reported.


   1.8 Completed Nine Sets of WF/PC-2 8061 (POMS Test Proposal: WF-II
Backup Parallel Archive Proposal)

       This is a POMS test proposal designed to simulate scientific plans.
The proposal was executed as planned, and no anomalies were reported.

   1.9 Completed STIS/CCD 7672 (STIS CCD Sensitivity Monitor)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
observations of standard star AGK+81D266 in order to monitor the
sensitivity of each CCD grating mode to detect any change due to
contamination or other causes.  As described in 2.1 and HSTAR 6635, the
acquisition for this proposal defaulted to fine lock on one FGS only.
Otherwise, the observations were completed as scheduled, and no further
anomalies were noted.

   1.10 Completed Three Sets of NIC/2/3 7907 (NICMOS Pure Parallel Winter
97-98)

       The Near Infrared Camera (Cameras Two and Three) was used to make
pure parallel spectrographic observations of sky regions when another
instrument is prime.  As described in 2.1 and HSTAR 6635, the acquisition
for the first iteration of this proposal defaulted to fine lock on one FGS
only.  Otherwise, the observations were completed as planned, and no
further anomalies were reported.

   1.11 Completed STIS/CCD/MA1/MA2 7733 (Distant Futures of Solar Activity)

       The Space Telescope Imaging Spectrograph (CCD, MA1 and MA2) was used
to make observations of the K2 III class star HD124897 (a.k.a., Arcturus).
This is to explore possible future fates of solar magnetic activity through
high-S/N ultraviolet spectra of this ancient Sun analog.  The observations
were completed as planned, and no anomalies were reported.

   1.12 Completed STIS/MA2 7604 (Cycle 7 MAMA Dark Measurements)

       The Space Telescope Imaging Spectrograph (MA2) was used to make MAMA
dark measurements.  These darks will be used in later image reductions and
also trended over the instrument's life time as an indicator of the
detector's degradation or damage.  The observations were completed as
scheduled, and no problems were reported.

   1.13 Completed NIC/1/2/3 7869 (The Morphology of Dense Gas in Seyferts ,
Obstruction and Fueling of AGNs)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the Seyfert galaxy NGC-5506 to study the morphology of
its dense gas.  Near-Infrared color maps and images in H-2 emission will be
used to trace hot and cold dense gas in this Seyfert galaxy.  The
observations were executed as scheduled, and no anomalies were noted.

2.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 6
                                        Successful : 6

       As documented in HSTAR 6635, the acquisition as 236/144538Z
defaulted to fine lock on FG-3 only when FGS-1 exceeded the scan step
limit.  The proposals described in 1.1, 1.4, 1.9, and 1.10 may have been
affected.

                          Scheduled Reacquisitions : 10
                                        Successful : 10

   2.2 FHST Updates:

                              Scheduled : 14
                             Successful : 14

   2.3 Operations Notes:

       The SSR EDAC error counter was cleared four times using ROP SR-1.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       Another iteration of the IP command test will be conducted this
afternoon.

       Continuation of normal science observations and calibrations.

/DMH