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10 Apr 2003

HUBBLE SPACE TELESCOPE

DAILY REPORT        # 3338

PERIOD COVERED: DOY 99

Part 2 of 2

NICMOS 9484

The NICMOS Parallel Observing Program

We propose to manage the default set of pure parallels with NICMOS.
Our experience with both our GO NICMOS parallel program and the
public parallel NICMOS programs in cycle 7 prepared us to make
optimal use of the parallel opportunities. The NICMOS G141 grism
remains the most powerful survey tool for HAlpha emission-line
galaxies at cosmologically interesting redshifts. It is particularly
well suited to addressing two key uncertainties regarding the global
history of star formation: the peak rate of star formation in the
relatively unexplored but critical 1<= z <= 2 epoch, and the amount
of star formation missing from UV continuum-based estimates due to
high extinction. Our proposed deep G141 exposures will increase the
sample of known HAlpha emission- line objects at z ~ 1.3 by roughly
an order of magnitude. We will also obtain a mix of F110W and F160W
images along random sight-lines to examine the space density and
morphologies of the reddest galaxies. The nature of the extremely red
galaxies remains unclear and our program of imaging and grism
spectroscopy provides unique information regarding both the incidence
of obscured star bursts and the build up of stellar mass at
intermediate redshifts. In addition to carrying out the parallel
program we will populate a public database with calibrated spectra
and images, and provide limited ground- based optical and near-IR
data for the deepest parallel fields. 

WFPC2 9594

WFPC2 CYCLE 11 SUPPLEMENTAL DARKS pt2/3

characterizing the evolution of hot pixels

STIS 9606

CCD Dark Monitor-Part 2

STIS 9608

CCD Bias Monitor - Part 2

high-S/N superbiases and track the evolution of hot columns.

ACS 9673

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

WFPC2 9676

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 parallel images of
random areas of the sky, following the recommendations of the 2002
Parallels Working Group. 

NICMOS 9702

NICMOS Parallel Thermal Background

NICMOS Camera 2 pure parallel exposures in the F222M and F237M
filters to establish the stability of the HST+NCS+Instrument thermal
emission. This data will be compared against the already available
Camera 3 measurements in F222M which show an increased thermal
background. 

STIS 9706

STIS Pure Parallel Imaging Program: Cycle 10

This is the default archival pure parallel program for STIS during
cycle 10. 

WFPC2 9710

POMS Test Proposal: WFII backup parallel archive proposal

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

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

Executed Ops Note 1095: Consolidated PCS Limit
Modifications {at} 099/20:30Z.


                  SCHEDULED     SUCCESSFUL    FAILURE TIMES
FGS GSacq             04            04
FGS REacq             11            11
FHST Update           08            08
LOSS of LOCK

SIGNIFICANT EVENTS:

Successfully completed TDRS J Level 6 Testing {at} 099/17:58Z.  See OR
16921-2. Dumped HST486 Table 1 {at} 099/17:55:27Z (ROP DF-1A).

FOT real-time spacecraft operations continue from the GSFC MOR,
pending study of SIMOR commercial power loss event.  HST-FSB3 Server
remains inoperative.

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