HUBBLE SPACE TELESCOPE - Continuing to collect World Class
Science
DAILY REPORT #4857
PERIOD COVERED: 5am June 1 - 5am June 2, 2009 (DOY
152/0900z-153/0900z)
OBSERVATIONS SCHEDULED
COS/NUV/S/C 11355
COS NUV Initial On-Orbit Turn-On and Recovery after
Anomalous Shutdown
This proposal is designed for the initial turn-on of the
COS NUV MAMA
detector. The same procedure may later be used to recover
the detector
after an anomalous shutdown. Anomalous shutdowns can occur
as a result
of bright object violations which trigger the Bright Scene
Detection or
Software Global Monitor. Anomalous shutdowns can also
occur as a result
of MAMA hardware problems. The Initial MAMA turn-on
consists of three
tests: a signal processing electronics check; a slow high
voltage
ramp-up to an intermediate voltage; and a slow high
voltage ramp-up to
the full operating voltage. During each of the two high
voltage
ramp-ups, diagnostics are performed during a dark time-tag
exposure. The
turn-on is followed by a MAMA Fold Analysis Test. The
complete sequence
is contained in visits 1 through 4. If a second execution
is required
during cycle 17, visits 5 through 8 will be run and
another proposal
prepared for possible future occurrences.
Supports Activities COS-04 and COS-07
FGS/S/C 11458
Optimizing FGS2R2 Performance with the AMA
This proposal satisfies SMOV4 AD OTA/FGSS-054. S-curves
with PUPIL and
F583W will be obtained at selected locations within the
FGS2R2 FOV
during SMOV4. These data will be will be used to adjust
the AMA so as to
align the HST pupil onto the interferometer's Koesters
prisms. The final
AMA position will be set to produce an acceptable set of
S-curves across
the FGS2R2 FOV. The AMA will be adjusted using
CCL/instructions from the
ground. It is intended that this proposal executes during
the SMOV4 BEA
and will require several (on the order of 4) iterations to
achieve
optimal interferometric performance.
STIS4 11349
Mechanism Mini-Functional
Move mechanisms, except the corrector, through the full
range of
previous on-orbit motion to redistribute lubricant and
verify
operability. Wait at least one minute after each move to
allow telemetry
to update so moves can be verified. Supports Activity
STIS-04
FLIGHT OPERATIONS SUMMARY:
Significant Spacecraft Anomalies: (The following are
preliminary reports
of potential non-nominal performance that will be
investigated.)
HSTARS: (None)
COMPLETED OPS REQUEST:
18462-0 - RMGA Power On/Off (06/09) (Routine) @ 152/1936z
18472-1 - Execute ROP NS-14, STIS MAMA Recovery after MCE
Reset @ 152/0629z
COMPLETED OPS NOTES: (None)
SCHEDULED
SUCCESSFUL
FGS
GSAcq
7
7
FGS
REAcq
0
0
OBAD with Maneuver
3
3
SIGNIFICANT EVENTS:
Flash Reports:
-Part 2 of the COS NUV init turn-on was successfully
competed at 152/17:22
-OPS Request 18462 was successfully executed on June 1,
2009 to perform
preventative maintenance of the Retrieval Mode Gyro
Assembly. RMGA was
powered on at GMT 152/18:35 to provide lubrication
to the backup gyro's
bearings. Following completion of this maintenance
an hour later, the
RMGA was powered off.