SMOV Status & Planning Meeting Notes
6/10/09
Notes provided by Burley (richard.j.burley@nasa.gov), Biagetti (biagetti@stsci.edu, and others as
indicated.
- Summary
Spacecraft subsystems continue to operate nominally. WFC3 is preparing
for detector cooldown over the next two days. The COS FUV high-voltage ramp-up
continues according to plan. The first COS NUV external observation is scheduled for this
evening. All internals continue to look good. Outside of ongoing analyses and ground
system updates, the SMOV for FGS2R is complete. The ACS Vod Tiger Team recommends
resumption of ACS SMOV. The STIS NUV MAMA recovery continues. STIS CCD
performance meets expectations and the CCD has been cleared for resumption of GO
Science.
- Observatory Status
o
o
o
o
PCS/SAC: JWirzburger
 Nominal
EPS
 Nominal
TCS: JAbel
 Nominal
I&C
 Nominal
o
DMS

o
486FSW
 Nominal
o
SAFING
 Nominal
 18499-2: Reconfigure to Avoid AD Closure Each Safemode @ 160/13:58Z
• BEA period has completed after 21 days following HST Orbiter
release, (~ GMT 160/13:05)
• OPS request 18499-2 was executed to reset the 486 and PSEA to
their nominal configuration
o Command the aperture door closed only for specific
safemode event.
o Prior to Orbiter release for BEA, the Safing subsystem was
configured to protect against UV entering the boresight by
closing the door for any safemode event.
o At GMT 160/13:51:56, following availability of H-format, IP160, section B was executed to remove from SMAC 00 the
MCU motor operate commands from the 486 safemode
macro
o At GMT 130/13:58:01, PSEA configuration was reset to not
close the aperture door if HWSP entry occurs in daylight as
well as ground limit adjustments completed.
Nominal
o
-
SIC&DH & P/L FSW
 Status: Nominal
 109 SBEs (4 since last meeting)
SI Status
o
WFC3
 Engineering
• Status
o Operate
o Heaters continue to be cycling nominally around their new
setpoints
 will continue to be trended through the cooldown
•

o
COS


Forward Plan
o Exit Protect mode and cool detectors (begun June 8)
(1145405)
o OR 18478-1 submitted to enable IR 6-stage TEC with a
setpoint of -90C, scheduled for 161/18:53 UTC (1145405A)
o OR 18477-0 submitted to clear WFC3 event flag 8 to enable
UVIS TEC commanding to occur from the SMS.
 First uplink opportunity 161/18:53 (1145405A)
o OR 18479-1 submitted to enable TECFIRE with nominal
setpoints.
 First uplink opportunity 162/02:42 UTC (1145406)
o SMS commanding to continue TEC cooldowns
 scheduled to begin 162/17:00 UTC (1145407)
Science: JMackenty, SDeustua
• Nothing to add
Engineering. SSwain.
• Status
o Operate, FUV Operate/HVLow
o Vacuum gauge ~3.4e-6 torr
o OR 18502-0 successfully completed at 160/13:34 UTC
 cleared COS event flag 3 to allow FUV commanding
to proceed with Part 3-3
• Forward Plan
o FUV initial HV turn-on visits 7/8 (Part 3-3) scheduled
161/19:24 UTC (1135607-08)
o COS-to-FGS Alignment part 1 scheduled for 162/03:47 UTC
(First external) (1146801)
o FUV initial HV turn-on visits 9/10 (Part 3-4) scheduled
163/17:25 UTC (1135609-10)
o OR to be submitted to clear COS event flag 3 to allow FUV
commanding to proceed
o For more details on these visits, see attached
COS_SMOV_update_10June2009
Science. TKeyes
• COS NUV Darks: 11466: 2 visits of 11 (COS05)
o Last 2 visits (10,11) presently scheduled
•
o
FGS/OTA
 Status:
•
•
•



o
o Refined analysis will proceed now that all visits are available
COS “First-Light” Day 162: Thurs 11 June
o First observation of an external source with COS
(astrometric F type MS star in cluster NGC-188)
o 11468 visit 1 (COS08) COS-to-FGS Alignment / Coarse
Focus
o For more details on this activity, see attached
COS_SMOV_update_10June2009
ACS


All hardware nominal, no HSTARs submitted.
8 successful Acquisitions/Reacquisitions.
2 AcquisitionS awaiting ETR telemetry.
6 FGS2 Fine Locks preceding the 6 POL (#10-15) TRANS mode
were successful.
The 62m14s FGS 2 POS mode has completed.
• No Loss-Of-Lock on guiders
• FGS 2 held target star in Fine Lock throughout.
• Need ETR telemetry for processing.
FGS2R SMOV is now complete
• Analysis continues
o Ground system updates to be in place by SMS180
 FGS2 can be used as guider at that point
Up-coming 24 hours
• 3 star pair Acquisitions and 5 star pair Reacquisitions.
• 1 single star Acquisition and 3 single star Reacquisitions
Engineering
• Status
o Operate, WFC/SBC LV On
o WFC CEB-R remains in current state with infinite flush
enabled, pending completion of further analysis of the output
drain voltage behavior
• Forward Plan
o Post-BEA UV check scheduled 162/20:55 UTC
Vod Tiger Team (AWhipple)
• No root cause of Vod anomaly identified
• Operation of WFC with default voltages and timing patterns
appears to be safe
• Tiger Team unanimously recommends resumption of ACS-R
SMOV
o Requires some real-time commanding to reset offsets to
full speed readout values for supporting normal science
operation
o 159 intercept SMS to perform external CTE check and
cross-talk measurements
• Nominal 166 SMS (as previously planned)
o 11369 - CCD functional (internal)
o 11465 - CCD monitor (runs every 2 days - internal)
o 11379 - WFC focus + FGS alignment (external)
o 11374 - Flat field stability (internal)
o 11398 - SBC: Sensitivity, geometric distortion + FF
verification
•

o
STIS


o 11196 - SBC: GO science
o 11791 - SBC: GO science
For detailed tiger team report see attached:
o 090610 ACS Vod Tiger Team
Science. LSmith
• Request for fastracking data from activities in 159 intercept sms
Engineering
• Status
o Operate/CCD On,MAMAs 1&2 LVOn (SAA cycling)
o Visit 2 of 4 for the MAMA2 (NUV) HV recovery completed
160/22:44 UTC
• Forward Plan
o CCD daily darks & bias monitoring continuing 161/17:53 –
19:49 UTC
o Visit 3 of 4 for the MAMA2 (NUV) HV recovery scheduled for
162/17:22 UTC
 OR 18504-0 submitted to clear STIS event flag 3 for
MAMA2 Checkout Part 3
o Visit 4 of 4 for the MAMA2 (NUV) HV recovery scheduled for
164/17:15 UTC
 OR 18505-0 submitted to clear STIS event flag 3 for
MAMA2 Checkout Part 4
Science. CProffitt
• CCD
o CCD performance close to expectations
 Mean T somewhat higher than anticipated, giving
20-30% higher median dark
 Rather more hot pixels than expected.
 Read noise slightly higher 5.6 vs 5.3
 CTE approximately as projected
o Tungsten, LINE, HITM1, and HITM2 function as before
 fluxes within a few percent
o Focus, external, & internal alignments do not appear to have
changed
o GO Science and ERO observations are enabled
 First visits will schedule no earlier than SMS173
(June 22)
• NUV MAMA HV Recovery Visit 2 (11351) completed.
o This is the first stage of the HV ramp-up.
o All telemetry during the ramp-up was nominal
o Images taken during the visit were blank, as expected for
this voltage level.
o We are clear to proceed with the next stage.
• FUV MAMA darks were taken last night.
o These are a series of exposures taken over a full SAA-free
interval.
o Three of the five darks taken are available in the archive
 the other two are still pending.
 The first three look as expected.
o some evidence of the expected enhancement of the dark
current as a function of HV on-time
o
-
P&S Status
o
o
-
NICMOS/NCS
 Status
• Safe
• NCS remains Safed
 Forward Plan
• Draft OR 652-0 submitted to eventually transition NCS CPL from
Standby to Startup (no formal plan to pursue this yet
• Project to schedule a meeting next week to discuss cooldown
approach
Calendar/SMS builds
 SMS166
• Science recorder overflows in part of the week
 SMS173
Replans
• ACS Tiger Team
Operations
o
FOT



o
o
o
No HSTARS
SMOV-related Ops Requests Completed
• 18502-0: Clear COS Event Flag 3 after FUV Initial Turn-on Part 3-2
Completes @ 160/13:34Z
• 18499-2: Reconfigure to Avoid AD Closure Each Safemode @
160/13:58Z
• 18503-0: Clear STIS Event Flag 3 (MAMA2 Checkout Part 2) @
160/15:10Z
Upcoming supports declared critical for WFC3 cooldown monitoring
(repeated from 6/09/09 notes)
• 161/19:44:00 - 161/20:14:20 TDW
161/20:38:54 - 161/21:14:29 TDE
162/18:01:33 - 162/18:42:40 TDW
162/19:49:45 - 162/20:36:44 TDW
162/20:37:16 - 162/21:12:45 TDE
PACOR: BPatel
 From June 9 (8am) to June 10 (8am)
• Pacor-A received one event with fast-track observations.
o The data was processed and delivered to OPUS without any
problems.
OPUS
 Continuing to fast-track science data, with data for COS proposal 11356
coming late tonight.
 Quick-fix 2009.2c was installed Tuesday morning
• allowed us to process and archive three WFC3 exposures for
proposal 11454
o these had errored in calibration on 5/29)
Archive
 Nominal