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Daily 3559



 
 
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Old February 26th 04, 04:14 PM
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Default Daily 3559

HUBBLE SPACE TELESCOPE - Continuing to collect World Class Science

DAILY REPORT # 3559

PERIOD COVERED: DOY 56

OBSERVATIONS SCHEDULED

ACS/HRC/WFC 10059

CCD Daily Monitor

This program consists of basic tests to monitor, the read noise, the
development of hot pixels and test for any source of noise in ACS CCD
detectors. This programme will be executed once a day for the entire
lifetime of ACS.

NICMOS 8791

NICMOS Post-SAA calibration - CR Persistence Part 2

A new procedure proposed to alleviate the CR-persistence problem of
NICMOS. Dark frames will be obtained immediately upon exiting the SAA
contour 23, and every time a NICMOS exposure is scheduled within 50
minutes of coming out of the SAA. The darks will be obtained in
parallel in all three NICMOS Cameras. The POST-SAA darks will be
non-standard reference files available to users with a USEAFTER
date/time mark. The keyword 'USEAFTER=date/time' will also be added to
the header of each POST-SAA DARK frame. The keyword must be populated
with the time, in addition to the date, because HST crosses the SAA ~8
times per day so each POST-SAA DARK will need to have the appropriate
time specified, for users to identify the ones they need. Both the raw
and processed images will be archived as POST-SAA DARKSs. Generally we
expect that all NICMOS science/calibration observations started within
50 minutes of leaving an SAA will need such maps to remove the CR
persistence from the science images. Each observation will need its
own CRMAP, as different SAA passages leave different imprints on the
NICMOS detectors.

NICMOS 9750

The Galactic Bulge Deep Field: A Planetary Transit Survey and Very
Deep Stellar Mass Function

We propose to observe a Galactic bulge field continuously with ACS/WFC
over a 7-day period. We will monitor ~167, 000 F, G, and K dwarfs down
to V=23, in order to detect transits by orbiting Jovian planets. If
the frequency of "hot Jupiters" is similar to that in the solar
neighborhood, we will detect over 100 planets, more than doubling the
number of extrasolar planets known. For the brighter stars with
transits, we will confirm the planetary nature of the companions
through radial- velocity measurements using the 8-m VLT. We will
determine the metallicities of most of the planet-bearing stars as
well as a control sample, through follow-up VLT spectroscopy. The
metallicities of the target stars range over more than 1.5 dex,
allowing for a determination of the dependence of planet frequency
upon metallicity--a crucial element in understanding planet formation.
We will be able to discriminate between the equally numerous disk and
bulge stars via proper motions. Hence we will determine, for the first
time, the frequencies of planets in two entirely different stellar
populations. We will also determine for the first time the
distribution of planetary radii for extrasolar planets for both these
populations. Parallel observations with NICMOS will provide ultra-deep
near-infrared images of a nearby bulge field, which will be used to
determine the stellar luminosity and mass functions down to the
brown-dwarf regime. The data will also be useful for a variety of
spinoff projects, including a census of variable stars and of hot
white dwarfs in the bulge, and the metallicity distribution of bulge
dwarfs.

STIS/CCD 10017

CCD Dark Monitor-Part 1

Monitor the darks for the STIS CCD.

STIS/CCD 10019

CCD Bias Monitor - Part 1

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.

STIS/CCD 10085

STIS Pure Parallel Imaging Program: Cycle 12

This is the default archival pure parallel program for STIS during
cycle 12.

WFPC2 10070

WFPC2 CYCLE 12 Supplemental Darks Part 2/3

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

WFPC2 10084

WFII parallel archive proposal

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

FLIGHT OPERATIONS SUMMARY:

Significant Spacecraft Anomalies: (The following are preliminary
reports of potential non-nominal performance that will be
investigated.) None

COMPLETED OPS REQs:
17088-0 Off-line +DD and +CC SPAs @056/1614z

OPS NOTES EXECUTED:
1203-0 Turnoff ground system limit for Gyro good counts mnemonics @056/1356z
1160-2 Default configuration for TLMDIAGs @056/1617z

SCHEDULED SUCCESSFUL FAILURE TIMES
FGS GSacq 4 4
FGS REacq 12 12
FHST Update 5 5
LOSS of LOCK

SIGNIFICANT EVENTS:

Successfully completed off-line +DD and +CC SPA Trim Relays in the
PCU-R and SSM486 FSW (TRSWCC and macros) @ first opportunity
056/16:15Z (OR 17088 with attached IP-051 and IP-053 scripts).
Following the uplink, EPS SE monitored power system operations from
the MOR for two orbits to verify nominal operation of TRSWCC (+DD and
+CC SPA Trim Relays disconnected, commanded relay order upon Trickle
Charge initiation, etc.). During the first and second orbits, the
batteries experience Trickle Charge durations of 15 minutes and 16
minutes, respectively. EPS SEs continue close monitoring of power
system performance, especially battery temperatures and pressures, to
assess the effects of this change.


 




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