HUBBLE SPACE TELESCOPE

                       DAILY REPORT #2153

PERIOD COVERED:  0000Z (UTC) 06/25/98 - 0000Z (UTC) 06/26/98

Daily Status Report as of 177/0000Z

1.0 ACTIVITIES SCHEDULED AND ACCOMPLISHED:

   1.1 Completed STIS/CCD 7926 (CCD Dark and Bias Monitor -- Continued)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
several dark and bias calibration observations.  This is 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.  These observations will also 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.

   1.2 Completed Four Sets of STIS/CCD 7908 (POMS Test Proposal: STIS
Non-Scripted Parallel Proposal)

       The Space Telescope Imaging Spectrograph (CCD) was used to make
calibration observations as part of the POMS Test Proposal.  This was a
STIS non-scripted parallel proposal.  The observations were completed as
planned, and no problems were reported.

   1.3 Completed NIC/3 7919 (NICMOS Camera 3 Campaign Snapshots)

       The Near Infrared Camera (Camera Three) was used to make images of
galaxy NGC-891 as part of the NICMOS Camera 3 campaign snapshots.  The
proposal is to obtain wide field snapshot images of nearby galaxies in
Paschen Alpha which is inaccessible from the ground.  The observations were
executed as planned, and no anomalies were reported.

   1.4 Completed Two Sets of NIC/1/2/3 7448 (Star Formation in a
Protogalaxy Candidate at z=2.72)

       The Near Infrared Camera (Cameras One, Two and Three) was used to
make observations of the star formation region within the protogalaxy
candidate MS1512+36 which is located at a redshift of Z = 2.72 .  Recently
a new population of galaxies at high redshift has been identified by
ultraviolet absorption lines which most likely arise from very young
stellar populations.  The observations were completed as planned, and no
anomalies were reported.

   1.5 Completed 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.  The observations were completed as planned, and no problems were
reported.

   1.6 Completed WF/PC-2 8049 (Long WF/PC-2 Decontaminations during 2nd
NIC/3 Campaign)

       The WF/PC-2 was used to make long decontamination procedures as part
of the second NIC/3 campaign.  Each decon is followed by five 30-minute
darks.  During this time, no external science WF/PC-2 observations were
executed.  The decontaminations were executed as scheduled, and no
anomalies were noted.

   1.7 Completed NIC/3 7841 (HST/NICMOS Observations of the Nearest
Embedded Cluster: the L1688 {Rho Oph} Protostellar Region)

       The Near Infrared Camera (Camera Three) was used to make
observations protostellar region of the nearest young cluster L1688
(Positions 8, 9 and 10) ( a.k.a., Rho Oph).  This cluster is unique in its
proximity to Earth, only 125 pc away; and in its high proportion of
optically invisible protostars.  The observations were executed as
scheduled, and no anomalies were noted.

.0 FLIGHT OPERATIONS SUMMARY:

   2.1 Guide Star Acquisitions:

                            Scheduled Acquisitions : 2
                                        Successful : 2

                          Scheduled Reacquisitions : 7
                                        Successful : 7

   2.2 FHST Updates:

                              Scheduled : 8
                             Successful : 8

   2.3 Operations Notes:

       Using ROP SR-1, the SSR EDAC error counter was cleared three times.

       NICMOS flight software (FSW) 4.0B was successfully installed at
176/1818Z.  This enhancement to FSW 4.0A corrects the function which
determines the position of the coronagraphic hole.  It also adds a new
status buffer message (NICMOS 740) which will indicate if the calculated
centroid checkbox was outside the field of regard for the hole.

       A real-time FHST map was commanded at 177/0021Z.

3.0 SIGNIFICANT FORTHCOMING EVENTS:

       The NICMOS Camera Three Campaign will be ending this Sunday evening.
Upon its conclusion, the secondary mirror will be returned to its nominal
focus position, a move of approximately -15.2 microns.  The earliest time
for the mirror move is 179/1725Z.

       Continuation of normal science observations and calibrations.

/DMH