README web version of /home/usg/OPS/MTS/readme_xml/readme_81067300
Principal Investigator Email Address
Estimated Total Execution Time (hours, including overheads)
General Description
The aim of this program is to search for faint proto-cluster members around
10 high redshift radio galaxies (HzRGs).
We have requested broad-band imaging in J, H and K in 7 targets; and Y, H and K
for 3 targets. All 3 broad-bands are needed to select red galaxies at the same redshift
as the HzRGs.
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Please continue the observations of an object already started before starting to
observe a new target, even of higher priority. So if a
priority 3 target has been started before a priority 1 or 2 target, we prefer to
finish the observations of the priority 3 target
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This is a simple imaging proposal and the instructions are the same for all 10 targets,
barring the different filter combinations, and flux calibration requirements for
the Y-band filters (see below).
The HzRG is too faint to be seen in 2MASS and will not be seen in the acquisition
image. The attached finding charts mark an 8'x8' field of view and chip gaps (black
box and cross) which is centred on the acquisition position. The HzRG, marked by
a circle, lies within one of HAWK-I's quadrants. Althought the HzRG will not be
seen in the acquisition image, there are >6 bright stars within each field that
can be used to check the position. Acquistion accuracy up to a few arcsec is required.
Dither offsets within a box of width 30 arcsec, have been specifically defined to
provide approximately smooth coverage across the chip gap.
The J, H and K images will be flux calibrated using 2MASS so accurate flux standards
in these bands are not required.
The Y-band will need to be flux calibrated using standard stars taken close in time
and airmass to the target observations. We will only flux calibrate 1 Y-band OB
per target. We have definited standard stars for the 3 targets that are imaged in
the Y-band (BRL 1602-174; MRC 1017-220; BRL 1140-114).
OB 'BRL 1602-174 standard star' must be taken immeditely BEFORE OB 'BRL 1602-174
Y-0'
OB 'BRL 1140-114 standard star' must be taken immeditely BEFORE OB 'BRL 1140-114
Y-0'
OB 'MRC 1017-220 standard star' must be taken immeditely AFTER OB 'MRC 1017-220
Y-0'
These standards and targets must be taken in Photometric conditions (the rest of
the observations request clear conditions). The finding charts of 2 of the standard
stars highlight the standard star with a red circle. The standard 'BRL 1602-174
standard star' is a open cluster field with ~12 J=12-13mag stars that will be used
to calibrate the target.
Waiver Requests
Critical Observing Condition Constraints
We specify the same observing conditions for the majority of the program:
CLEAR, 1.0" seeing, and no moon constraints.
For 6 OBs we specify the following observing conditions: PHOTOMETRIC, 1.0" seeing
and no moon constraints.
These 6 OB comprise of 3 Y-band images and 3 standard stars with which to flux calibrate
these Y-band observations.
Time-Critical Aspects
Special Execution Requirements
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The data are only useful if we observe a target in all 3 filters.
Please continue the observations of an object already started before starting to
observe a new target, even of higher priority. So if a
priority 3 target has been started before a priority 1 or 2 target, we prefer to
finish the observations of the priority 3 target
**************************************************************************************************************************************
We have specified standard stars for the Y-band images to be taken directly before
or after the first Y-band OB executed.
OB 'BRL 1602-174 standard star' must be taken immeditely BEFORE OB 'BRL 1602-174
Y-0'
OB 'BRL 1140-114 standard star' must be taken immeditely BEFORE OB 'BRL 1140-114
Y-0'
OB 'MRC 1017-220 standard star' must be taken immeditely AFTER OB 'MRC 1017-220
Y-0'
Special Calibration Information
ToO Information
ToO Activators List
Is this a Pre-imaging run ?
Pre-imaging Requirements
Source(s) of Pre-imaging
Pre-imaging sources not listed above
Do all your OBs comply with the instrument-specific requirements listed
on the instrument-specific Phase 2 web page ?
If this is a pre-imaging run, did you select PRE-IMAGING for the Observing
Category for each Observing Template ?
Do all your finding charts comply with both the general and instrument-specific
Phase 2 Web Pages ?
If you submitted OBs for standard stars, did you specify the magnitude
and spectral type of all standard stars in the OBs ?
Have you included OBs for any calibrations that you need but which are
not part of the Calibration Plan ?
If you are observing Moving Targets, have you attached suitable ephemeris
files to your OBs?
If you have preferences which OBs should be executed first, did you make
use of the User Priority field in the OBs ?
If this is a run that requires coordinated observations with other facilities,
did you give proper instructions in the Time-Critical Aspects Section ?
If you submitted OBs for standard stars, did you use the provided StandardStar
templates ?
If you are using a specific offset pattern or position angle, did you
check carefully the definition in the manual ?
If you are doing spectroscopy, did you draw the slit on the Finding Charts
?
Did you enter the magnitude of the brightest star in the field-of-view
in the 'Instrument Comments' field of each OB ?
If you use the MoveToPixel acquisition, have you given clear instructions
on the FC and in the OB comment section as to how the field should be centered ?
Last creation of page: Tue Oct 6 15:40:25 2009
If you have comments, please contact usd-help@eso.org