README web version of /home/usg/OPS/MTS/readme_xml/readme_83078101
Principal Investigator Email Address
Estimated Total Execution Time (hours, including overheads)
General Description
Information on targets and AO TTS:
OB names R(TTS) target separation comments
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SINSZC_ZC782941_LGSAO_P83-# 14.2 K=19.9 39 arcsec H_alpha: line at 2.088um
SINSZC_ZC403741_NGSAO_P83-# 14.3 K=19.2 15 arcsec H_alpha: line at 1.605um
SINSZC_D3a15504_NGSAO_P83-# 16.3 K=19.2 17 arcsec H_alpha: line at 2.221um
SINSZC_ZC400569_NGSAOSky_P83-# 15.2 K=18.9 20 arcsec H_alpha: line at 2.127um
SINSZC_ZC400528_NGSAO_P83-# 15.1 K=19.2 8 arcsec H_alpha: line at 2.223um
SINSZC_D3a6004_LGSAO-Sky_P83-# 15.8 K=18.9 50 arcsec H_alpha: line at 2.223um
The main characteristics of the observations are as follows.
- The PA is set to 30 deg for ZC400569 primarily for scientific reasons as well
as
to ensure the tip-tilt reference falls within the Field Selector field of view
(FOV).
THIS PA SHOULD NOT BE MODIFIED.
- The Telescope Guide Star has been selected for all targets ("SETUPFILE" and
coordinates specified explicitely), to allow for accurate registration of
different OBs of a given target.
THE TGS SHOULD NOT BE MODIFIED (THE SAME TGS IS NEEDED FOR ALL OBS OF A GIVEN
SOURCE).
- The targets have the following priority, but see explanations below:
1) ZC782941 : 7 OBs LGS
2) ZC403741 : 4 OBs NGS
3) D3a15504 : 12 OBs NGS
4) ZC400569 : 8 OBs NGS
5) ZC400528 : 4 OBs NGS
6) D3a6004 : 9 OBs LGS
- We understand that time dedicated for LGS observations is restricted to a fixed
period each month. Priorities given above are scientific priorities, and should
be taken such that:
1) during LGS time, LGS targets should have highest priority over all targets
(observing conditions and scheduling constraints permitting) and following
the ranking given above among those LGS targets,
2) during non-LGS time, NGS targets should be observed in the order as given
above among those NGS targets.
- It is more important to complete all OBs of a target before observing another
target. The exception is if LGS observing period starts before an NGS target
is completed, then LGS targets should get higher priority at that moment if
conditions and scheduling constraints permit LGS observations
(and the NGS target may be completed afterwards).
- OBs are named after the targets, with "-0", "-1", "-2", etc. appended for different
OBs.
- The "priority" flag is the same for all OBs of a given target; we would however
prefer, if possible, that the OBs are observed starting from "-0" and in increasing
number, as given in the OB name.
- The DITs for our exposures of our faint targets are 600s.
- The brightest spectral feature of the targets is H_alpha in emission;
the observed wavelength of the line is given in the table above.
- We are using the 100mas scale, with FOV of 3.2"x3.2".
Two different strategies are followed, depending on the target.
(1) ZC400569 and D3a6004 are extended in all directions based on our previous
seeing-limited mode SINFONI data. For proper coverage of the entire source
and
proper background subtraction, "sky" exposures away from the source are needed.
The sequence is "O S O O S O" where each "O" on-source pointing is offset by
about 0.2" along RA and DEC at positions around the target (giving a "jitter
box width" of about 0.4").
For ZC400569, its N-S elongation requires to use PA = 30 for optimal mapping
of the line emission (see the second finding chart provided for this source).
(2) All other targets can be done with an on-source dithering pattern, where two
successive exposures are offset along E-W by about 1/2 of the 3.2"x3.2" FOV
(i.e., about 1.5") for pairwise sky subtraction. Small jitters are done
around the two main dither positions to minimize the number of redundant
positions.
Remarks on the finding charts:
- Two finding charts are provided for each target and OB, following the instructions
for SINFONI.
(1) The first ones (SINSZC_{source_mode}_fchart1.jpg) have wider FOV; a large
and
a small black square show regions 1' x 1' and 8" x 8" centered on the target;
the TTS is labeled "R1". The larger dashed rectangle shows the Strap Field
Selector FOV of the AO system.
(2) The second ones (SINSZC_{source_mode}_fchart2.jpg) are zoomed in on the target,
with the large and small solid-line squares showing regions of 8" x 8" and
3.2" x 3.2" centered on the target. In addition, two dashed-line squares
show
the outline of the jitter box for sources requiring sky positions away from
the
target, and of the two main dithering positions for the other sources with
on-source dithering.
- For D3a15504 and D3a6004 a third finding chart is included,
(SINSZC_{source_mode}_fchart3.jpg). It is similar to the zoomed
SINSZC_*_fchart2.jpg but based on much higher resolution VLT/NACO imaging.
Waiver Requests
One Waiver Request was submitted:
183.A-0781B.01.WAV: request for an increase of the OB execution time limit to ~1h50.
(submitted on Apr 5, 2009)
"Partially accepted": for a maximum OB execution time of 1h30
(granted on Apr 8, 2009)
Critical Observing Condition Constraints
Transparency constraints:
- For all OBs, CLEAR sky transparency conditions is acceptable, as specified
in the proposal.
Moon constraints:
- For all targets, conforming to our proposal, there is no constraint on
lunar phase and so the illumination is set to 1.0.
- For some targets, the TTS is faint (V ~ 16), however, so we have set the
constraint for moon distance to 50 degrees
(following recommendations from the ESO SINFONI P2PP Web pages
(http://www.eso.org/observing/p2pp/SINFONI/SINFONI-P2PP.html#Requirements)
Seeing constraints:
- Seeing < 0.8", as specified in the proposal.
Time-Critical Aspects
Special Execution Requirements
The PA = 30 deg is necessary and essential for target ZC400569,
as explained in the General Description.
As also explained in the General Description, LGS targets should
"override" any of our NGS targets during the period dedicated
to LGS observing at the VLT - of course as permitted and feasible
given observing conditions and other scheduling constraints at the VLT.
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 15:40:30 2009
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