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25 April 2003

HUBBLE SPACE TELESCOPE

DAILY REPORT #3349

PERIOD COVERED: DOY 114

Part 2 of 2

WFPC2 9594

WFPC2 CYCLE 11 SUPPLEMENTAL DARKS pt2/3

This dark calibration program obtains 3 dark frames every day to
provide data for monitoring and characterizing the evolution of hot
pixels 

WFPC2/ACS 9601

WFPC2-ACS Photometric Cross-Calibration

This proposal is aimed at providing photometric zeropoint
cross-calibration between the commonly used WFPC2 photometric filter
sets and those that will be used for ACS programs. The proposal
includes observations of globular clusters spanning a wide range in
metallicity, including NGC 2419 and 47 Tuc.  In addition, we will
obtain WFPC2 observations of the primary ACS standard star. This
program will produce a valuable tie-in between the WFPC2, ACS and
Sloan filter photometric systems.

STIS 9606

CCD Dark Monitor-Part 2

Monitor the darks for the STIS CCD.

STIS 9608

CCD Bias Monitor - Part 2

Monitor the bias in the 1x1, 1x2, 2x1, and 2x2 bin settings at
gain=1, and 1x1 at gain = 4, to build up high-S/N superbiases and
track the evolution of hot columns. 

ACS 9650

CCD Hot Pixel Annealing

Hot pixel annealing will be performed once every 4 weeks. The CCD
TECs will be turned off and heaters will be activated to bring the
WFC detector temperature to about +10C. The HRC temperature will
reach about 30C.This state will be held for approximately 24 hours,
after which the heaters are turned off, the TECs turned on, and the
CCDs returned to normal operating condition. To assess the
effectiveness of this procedure, a bias and two dark images will be
taken before and after the annealing procedure for both WFC and HRC.

ACS 9674

CCD Daily Monitor

for any source of noise in ACS CCD detectors. This programme will be
executed once a day for the entire lifetime of ACS.

STIS 9708

STIS Pure Parallel Imaging Program: Cycle 11

This is the default archival pure parallel program for STIS during
cycle 11.

WFPC2 9709

POMS Test Proposal: WFII parallel archive proposal

This is the generic target version of the WFPC2 Archival Pure
Parallel program. The program will be used to take paralell images of
random areas of the sky, following the recommendations of the 2002
Parallels Working Group.

WFPC2 9710

POMS Test Proposal: WFII backup parallel archive proposal

This is a POMS test proposal designed to simulate scientific plans.

FLIGHT OPERATIONS SUMMARY:

Significant Spacecraft Anomalies:
(The following are preliminary reports of potential non-nominal
performance that will be investigated.)

HSTARs:
8999 GSACQ(2,3,2) results in FL backup, Scan Step Limit Exceeded on
FGS 3 {at}114/2249z

COMPLETED OPS REQs:
None

OPS NOTES EXECUTED:

                        SCHEDULED     SUCCESSFUL    FAILURE TIMES
FGS GSacq                   6              6
FGS REacq                   5              5
FHST Update                15             15
LOSS of LOCK

SIGNIFICANT EVENTS: None

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