README web version of /home/usg/OPS/MTS/readme_xml/readme_79065400
Principal Investigator Email Address
Estimated Total Execution Time (hours, including overheads)
General Description
Allocated time:
These are PARSEC GTO observations. Up to and including P80 we were internally assigned
22h of time with 8h remaining for later. We submit here 7:01h worth of OBs, to be
executed in P79 (if we wanted to have cut the 1min above 7:00h we would have needed
to cut one of the OBs by 1/6 in observing time due to being limited to 300s or 600s
exposures...).
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Targets summary:
OB names R (TTS) target separation comments
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HE0047_H_*** ~17 H~15.3 ~0.7" 2 comp. grav. lens
HE1104_K_*** ~16.4 H~15.7 target=TTS 2 comp. grav. lens
PG1115_H_*** ~16.5 H~15.9 ~1" 4 comp. grav. lens
SDSS015410_H_**** ~14.2 H~17 9.7" point source QSO
None of the targets or guide stars is brighter than 10th mag in the NIR. All magnitudes
are point source magnitudes, except for the guide star of PG1115, which are two
point sources at 0.5" distance.
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Goal:
We want to observe 4 QSOs, redshift 1.5 to 2.3, three of them gravitationally lensed.
Goal is to take H or K band spectra including Halpha, to detect extended Halpha
in emission from the surrounding galaxy. This narrow Halpha emission line is expected
to show velocity structures which we want to use to estimate a dynamical mass of
the galaxy. We are only interested in Halpha and the velocity, no line fluxes or
ratios are to be determined.
The continuum of the QSO host galaxy is likely too faint to be detected, so only
Halpha (broad and narrow components) and possibly a few other emission lines will
be seen.
The non-lensed QSO has a TT star at 9.7" distance, the 3 lensed QSOs have to be
TT guided on parts of themselves, for one of them (HE1104) the gioding and spectroscopy
position are fully identical. For the other two (HE0047 and PG1115) there center
of spectroscopy is the center of the system, while guiding will be done on one the
brightest component.
Two of the QSOs (PG1115 and HE0047) have as the brightest component R~16.5-17, so
just at the edge of the permitted TT "star" limit. Since there are fainter components
nearby, the TT sensor could/needs to be windowed around this brightest component.
The underlying host galaxy and lensing galaxy contribute only very little flux to
the system.
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Coordinate precision:
While the absolute coordinates could be off by ~1", the relative positions between
guide star and target are always correct.
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Priorities:
Three targets have 1 OB, one has 2. We first want for each target 1 OB executed
(priority 1) then the second for PG1115 (priority 2).
Waiver Requests
Critical Observing Condition Constraints
We need as small a PSF as possible to remove the quasar light from the
underlying emission line part. Also, we need as much depth as possible, with a decent
sky line subtraction.
Therefore: <0.6" seeing, clear sky, not too high airmass (<1.8), some moon
distance for the faint grav. lenses (50 deg and 0.7 moon phase).
Time-Critical Aspects
Special Execution Requirements
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 ?
Did you indicate the magnitude of the brightest object in the field in
each SINFONI OB?
If you are using the AO: Did you indicate for every OB the magnitude
of the guide star, and its distance to the target (if any)?
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 make really sure that none of your OBs ever saturates the detector?
If you are using the AO: did you enter the correct Strehl Ratio (on-axis,
K-band) AND the seeing value in the constraint set?
Last creation of page: Tue Oct 6 15:40:19 2009
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