SMOV Status & Planning Meeting Notes
6/04/09
Notes provided by Burley (richard.j.burley@nasa.gov), Biagetti (biagetti@stsci.edu, and others as
indicated.
-
Summary:
Observatory and instruments continue to perform nominally and according
to plan. The STIS CCD has performed its first external observation for the purpose of
alignment with the FGS system. This result and other internals look very good. COS and
STIS high-voltage ramp-ups are proceeding nominally. The ACS Optimization Campaign will
be shortened, by agreement, to four iterations, ending on June 14, after which the rest of the
nd
WFC SMOV can proceed. Plans for the 2 AMA adjustment of FGS2R2 have been
formulated. Star Tracker shelf temperatures and other Aft Shroud temps are being
monitored.
- Observatory Status
o
PCS/SAC. DMurphy
o Nominal. The PCS subsystem is operating nominally.
o Reviewed Merle’s email concerning the potential failure to Fine Lock Backup
(FLBU) of the GS Acqs in the 152 SMS and the impacts to V1 bias updates.
 The largest period over which we might not have a V1 bias update is
approximately 14 hours at 159/00:34.
 The V1 bias has an approximate trend of -1.47 arcsec/hr/hr.
• So after 13 hours we could have an uncompensated V1 bias
component of about 20 arcsec /hr
 Given the insensitivity of the FGSs to V1 error and the small component
value we do not expect any issues with the observer converging during the
acquisition process.
 Would probably need ~ 24 hours before we would have problems.
o
EPS

o
TCS (JAbel)
 One FHST equipment shelf temperature is intermittently out-of-limits high
• Ops Note in the works. No h/w risk.
• Gradients are high across this shelf. Need to fine tune the limits.
• Still trying to make contact with Jeff Lasko.
 Hardware is nominal
o Gyro heaters operating on ~ 20% duty cycle, as expected
o
I&C
o
DMS

o
486FSW

Nominal (SKrol)
Nominal
Nominal.

-
Nominal
o
SAFING
 Nominal. EMoy.
o
SIC&DH & P/L FSW
 Status
• Nominal B-side operation continues
• 84 SBEs (6 since last meeting)
 Forward Plan
• No changes
SI Status
o
WFC3
 WFC3; Protect Operate, waiting for BEA end.
 Engineering
• Nominal
• Forward Plan
o No commanding planned during the next week
o Mini-Ops Briefing for the transition out of Protect and the
detector cooldown scheduled for tomorrow morning

o
COS


Science
• Official decision to proceed with Normal operations and cool
the UVIS and IR detectors after conclusion of the 21-day Protect
period made 3 June (WF05/05) (per 6/03/09 Mackenty email to
Biagetti/Burley)
Engineering. SSwain.
• Status
o Operate/FUV Operate.
o Vacuum gauge ~3.9e-6 torr
o NUV initial HV turn-on Part 3 completed for 154/19:05
UTC
 Some differences in global event rates noted in
engineering data as compared to ground test for the
dark time-tagged imaging
 Analysis of the science data pending
• Forward Plan
o NUV Fold Test scheduled for 155/17:51 UTC
 OR to be submitted to clear COS event flag 2
between Part 3 and the NUV Fold Test between
154/19:05 and 155/17:42 UTC
o COS FUV initial HV turn-on (1 of 13) scheduled for
155/21:05 UTC
Science. TKeyes
• Apparently nominal HV ramp-up and operation; recommend ops
request to clear event flag 2, continue with SMOV operations
• Two test exposures (program 11355 visit 4)
o Exp 1 : 3090 sec during full ramp-up sequence
•
•
•
•
•

o
•
FGS/OTA
 Engineering (ABradley, L Abramowicz-Reed)
•
•
•
o
o Exp 2: 450 sec at full operating voltage
Voltage ramp exposure: final count rate consistent with subsequent
dark
Nominal voltage [-2050v(MCP) / -800v(PC)] integration :
Rate: 29.8 (13395. counts / 450. secs) ;
No obvious morphology.
Consistent with expected higher background on-orbit, but not as high
as predicted.
See attached charts COS_SMOV_update_04June2009[updated]
ACS


Status; hardware nominal
o FGS Thermal E442 – Aft F/G Panel is hitting YLW Hi
o The 4 previous Acquisitions that were pending ETR
telemetry were successful
o There were 5 successful Acquisitions, and 1 TRANS Mode
Observation with FGS 2 to support the AMA move.
o 1 GSACQ was a single star (FGS 3) with an FGS 1
Astrometry Observation.
o
(Need ETR, but many FLs in the Astrometry).
o There are 2 new Acquisitions pending ETR telemetry.
o HSTAR 11861 has been resolved (see following charts).
o There were 2 new Acquisitions with the FGS 3 problem
Guide Star:
 155:01:30 – FL after final Resume Search
 155:08:35 – FL with no problem
For details on the upcoming AMA adjustment, see that attached:
OPS_Briefing_AMAMove-2-SMOV GOODRICH
Up-coming 24 hours:
o 6 GSACQs (Guide star pairs) and 3 Reacquisitions are
planned over the next 24 hours.
o AMA move #2 is also planned.
 For more info, see the attached SMOV-OTA-June 4
Engineering. SSwain.
• Status; Operate/SBC LV
• ASIC FSW values updated based on analysis of initial Oscilloscope
data via OR 18471-0, completed at 153/17:55 UTC
• Analysis of the data from Optimization Campaign Iteration 2 in-work
• Forward Plan
o Second End BEA check scheduled 156/06:32 UTC
o Optimization Campaign Iteration 3 scheduled for 159/01:00
UTC
Science. DGolimowski
• Optimization Campaign Iteration 2 analysis is on-going
• SMOV Management has formally approved the truncation of the
Optimization Campaign after completion of Iteration 4 (June 14)
o
STIS

Engineering . SSwain.
• Status
o Operate/MAMAs 1&2 LVOn (SAA cycling)
o Visit 2 of 4 for the MAMA1 (FUV) HV recovery (Part 2)
completed nominally
 Event flag 2 set at the completion of the activity
o Science Team analysis of the CCD imaging performed using
Amplifier B indicates the read noise anomaly remains
present.
 Attached are plots of the CEB input voltages as well
as all the voltages monitored in each board from
2003 and today.
• STIS_CEB_Votlages2009_PLOT
• STIS_CEB_Votlages2003_PLOT
•
•

Forward Plan
o CCD characterization continues today
 Darks & Bias monitoring
 External focus check
o Visit 3 of 4 for the MAMA1 (FUV) HV recovery (Part 3)
scheduled for 156/20:56 UTC
 OR 18467-1 submitted to clear event flag 2 to allow
MAMA1 HV commanding to proceed with Part 3
Visit 4 of 4 for the MAMA1 (FUV) HV recovery (Part 4) scheduled for
158/19:42 UTC
o OR 18468-0 submitted to clear event flag 2 to allow MAMA1
HV commanding to proceed with Part 4
Science – CProffitt
• Data was received overnight for seven STIS SMOV Activities
o STIS06 CCD Functional data
o STIS07 ongoing darks and biases monitor
o STIS08 Aperture Wheel and Lamp Tests
o STIS15 CCD CTI Check
o STIS10 CCD Format Verification
o STIS09 STIS/FGS Alignment (First external light)
o STIS17 Visit 2 of the FUV MAMA recovery
•
The 1st external data STIS data taken looks very good.
o Target was V=10.5 mag A star from Tycho catalog.
o The STIS to FGS alignment looks very good.
o The on-board ACQ succeeded
 found thetarget within about 0.27" of the reference
aperture (consistent with GSC2 accuracy).
o The astrometric coordinates of the target and guide stars will
be used to make a more precise estimate of the alignment.
 But current alignment is more than good enough for
normal operations.
o Lamp test data show all lamps appear to be working
including
 tungsten, line, hitm1, and hitm2 lamps.
o The amp B bit-shift anomaly appears to be permanent
and stable.
 We'll have to see if unshifting the data will allow us
to get good CTI results using this amp.
•
o
-
NICMOS/NCS
 Status
• Safe
• NCS remains Safed
• ESM in Operate
• TPS ~1.1e-6 torr
• PCE enabled for telemetry monitoring
• NCS CPL in Standby at -34 degC
•
 Forward Plan
• Draft OR 652-0 submitted to eventually transition NCS CPL from
Standby to Startup (no formal plan to pursue this yet)
P&S Status
o
o
-
Results from the second stage of the FUV MAMA recovery look
nominal.
o The two darks taken are blank as expected for this voltage
threshold.
o We recommend proceeding with the next stage of the
recovery.
Calendar/SMS builds
 SMS159 delivery expected today
 SMS166 being built
• Contains replanned ACS activities due to curtailed Optimization
Campaign
• Very high data-volumes observed so far
Replans (No change)
Operations
o
FOT

o
PACOR (BPatel)
 From June 3 (8am) to June 4 (8am), Pacor-A received nine events with fasttrack observations.
• The data was processed and delivered to OPUS without any
problems.
o
OPUS
 Finished fast-tracking data for iteration 2 of the ACS optimization campaign
• (proposal 11810).
 Also fast-tracked some data for COS proposal 11355 and STIS proposal
11350 last night.
 Late today data will be fast-tracked for
• COS proposals 11355 and 11356
• ACS proposal 11372 early tomorrow morning.
o
Archive
 Nominal
Nominal