README web version of /home/usg/OPS/MTS/readme_xml/readme_82073802
Principal Investigator Email Address
Estimated Total Execution Time (hours, including overheads)
General Description
Imaging of high-redshift radio galaxies and the surrounding protocluster
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The aim of these observations is to gain Y and K-band data on 3 high redshift radio
galaxies and their surrounding regions. The radio galaxies are typically H=20mag_AB
and the surrounding galaxies we are interesting in are fainter with H=22mag.
The 3 targets are:
MRC 0140-257 Observed in Y and K.
MRC 0156-252 Observed in Y only.
TX 1707+105 Observed in Y and K.
All targets have priority 1 as none is prefered, however
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Please continue the observations of an object already started before starting to
observe a new target. The observations of both Y and K-band on each target are essential
to the science goals.
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This is a simple imaging program and the instructions are the same for all targets,
barrin gthe different filter combinations, and the flux calibration requirements
for the Y-band filters (see below).
The radio galaxy is too faint to be seen in 2MASS and will not be seen in the acquisition
image. The attached finding charts are all 10'x10'. Indicated on each finding chart
is the hawk-I field of view (7.5'x7.5'), the centre of the hawk-I field-of view
is marked by a black circle and the red circle marks the position of the radio galaxy
(offset from the Hawk-I center by at least 70"). There are >6 bright stars in
each field that can be used to check the position. Accurate pointing is not required,
acquisition accuracy to ~a few arcsec is adequate.
The K-band will be flux calibrated using 2MASS so accurate flux calibrations are
not required, but the Y-band will need to be flux calibrated using standards taken
close in time and airmass to the target observations.
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Y-band observations
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We have defined standard stars for each of the 3 targets.
OB 'MRC 0140-257 standard star' must be taken immediately *BEFORE* OB 'MRC 0140-257
Y-0'
OB 'MRC 0156-252 standard star' must be taken immediately *BEFORE* OB 'MRC 0152-252
Y-0'
OB 'TX1707+105 standard star' must be taken immediately *AFTER* OB 'TX1707+105 Y-0'
These requirements are also noted in the User Comments sections on the relavent
OBs.
These standards and targets must be taken in photometric conditions (the rest of
the observations request clear conditions). The finding charts of each standard
circles the standard star in red and the centre of the HAWK-I field of view in black.
The standard star has been offset so that is is observed in the same detector as
the radio galaxy.
Waiver Requests
Critical Observing Condition Constraints
For the majority of the program we specify CLEAR, 0.8" seeing and no moon
constaints
FOR 6 OBs we specify the following conditions: PHOTOMETRIC, 0.8" seeing and no moon
constraints.
These 6 OBs comprise of Y-band images of the targets and 3 standard stars with which
we will flux calibrate the target observations
Time-Critical Aspects
Special Execution Requirements
Special Calibration Information
We have specified standard stars for the Y-band images to be taken directly
before or after the first Y-band OB executed in photometric conditions
OB 'MRC 0140-257 standard star' must be taken immediately *BEFORE* OB 'MRC 0140-257
Y-0'
OB 'MRC 0156-252 standard star' must be taken immediately *BEFORE* OB 'MRC 0152-252
Y-0'
OB 'TX1707+105 standard star' must be taken immediately *AFTER* OB 'TX1707+105 Y-0'
TX1707+105 standard star is the faint UKIRT standard star FS35 with K=11.748, Y=12.41
MRC 0140-257 standard star and MRC 0156-252 standard star is the faint UKIRT standard
star FS1 with K=12.964, Y=13.738
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 ?
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 15:40:27 2009
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