SMOV Status & Planning Meeting Notes
9/30/09
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Summary –
NICMOS Cooling System control set point has been raised to 77 degK, up
from 75K. Discussions/analyses are underway to determine final temperature set point prior
to continuation of NICMOS SMOV. In the meantime, all three NICMOS cameras are
exhibiting higher-than-expected dark current at both temperature settings.
o
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Observatory Status
o
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Details below and in the referenced attachments.
All subsystems are nominal
SI Status
o
WFC3
 WFC3 SMOV is complete
o
COS (TKeyes)
 COS SMOV is complete
 Final report at next meeting
o
FGS/OTA
 FGS/OTA SMOV is complete
o
ACS

ACS SMOV is complete.
STIS

STIS SMOV is complete
o
o
NICMOS/NCS (TWiklind)
 Engineering
 NCS PID control setpoint changed from 75 to 77 deg K on Sep. 24
(267/1502)
o As part of early NICMOS SMOV Plan
o Decision on final NCS set-point expected on Oct. 01.
 Science (TWiklind)
 NICMOS SMOV has begun
o So far only darks
o Dark current is higher than expected in all three cameras
 @ 75 K
 60% for NIC1 & 2
 170% for NIC3
 @ 77 K
 125% for NIC1 & 2
 380% for NIC3
o Also increase in hot/warm pixels
 Need to determine what part of dark current is
caused by the increase in hot/warm pixels
 NICMOS Team is studying
o

o
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For details, see attached NICMOS_SMOV_Report_20090930.ppt
ERO program is complete.
P&S Status
o
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ERO

The NICMOS Team is evaluating the impact of this behavior
on science operations for Cycle 17
 Impact to science is significant but may not be
severe
 Dark current is still at a relatively good level
 May simply imply some longer integration
times
o or possibly a switch to WFC3
 Narrow-band observations at medium
wavelengths may be impacted the most
Nominal
Operations
o
FOT

Nominal
o
PACOR
 Nominal
o
OPUS (TEllis)
 Since the last SMOV status meeting we fast-tracked
 NICMOS data for proposal 11947
 STIS data for proposal 12010.
 Reprocessed the exposures in association ib3h06020, which errored
in calibration back on 8/21.
o Howard Bushouse had determined that the two member
exposures should not have been associated in this case,
 He filed a TRANS OPR to avoid this problem in the
future.
o Some database cleanup and reprocessing were required for
members ib3h06m1 and m5
 to be processed and archived as singletons.
 Finished figuring out what's needed to deal with the na7o01 and 02
exposures
o (proposal 11406) that failed the DADS house-keeping
updates recently.
o These weren't collected into associations due to calibration
being bypassed
 (dc_nic not triggered).
o ARCH OPR 63593 was submitted to get the OPUS database
records for the associations deleted
 Request was sent George Chapman to have the
corresponding records in the SPSS database
removed.

o
Learned that we will need a fixed version of the 'podwhacker' tool to
deal with WFC3 dataset, ia2s66rkq
o currently stuck in OTFR ('p' in the DP step of the clark
pipeline).
o Mike Swam filed OPUS OPR 63602 to get this fix done,
 It looks like it will be included in 2009.3.
Archive (SAnderson)
 Nominal