README web version of /home/usg/OPS/MTS/readme_xml/readme_80033901
Principal Investigator Email Address
Estimated Total Execution Time (hours, including overheads)
General Description
The main characteristics of the observations are as follows.
- The targets have the following priority:
early in P80: 1) K20-ID6 : 5 OBs
later in P80: 2) D3a-6004 : 4 OBs
3) D3a-12556 : 4 OBs
4) D3a-6397 : 2 OBs
- Sensitivity is a key parameter for our science goals. It is more important
to complete all observations for the highest priority target before starting
the observations for the next ones, in order of priority.
- There is no priority among the OBs for a given target. OBs are named after
the targets and with "-0", "-1", "-2", etc. appended for different OBs.
- The NACO pointings have field center coordinates and position angles so as
to cover the science target and at least one star (including the TTS for
D3a-12556 and D3a-6397). This will provide the PSF calibration simultaneously
with the science data, minimizing overheads associated with PSF calibration.
The initial position of the dither sequence of each OB is not centered on the
target, because of the need to keep the TTS within the distance limit of the
field center and to have at least one reference PSF star within the field of
view for all dithered exposures in any given OB.
- The NDIT x DIT are either 4 x 30s or 3 x 45s. These were chosen so as to
avoid saturation of the star in each field that we will use for PSF calibration.
- The magnitude of the brightest source in each field is specified in the
"comments" field of the OB templates.
- All fields include only one science target.
We would also like to note that for all of our targets, the only TTS's
available are rather faint. We are aware of the possible limitations this
could have on the AO performance. Our experience from the NACO+LGSF
commissioning in January 2007 and from our NACO+LGSF visitor mode run in
March 2007 with TTSs of similar magnitudes and at comparable distances from
the science targets was successful and provided effective angular resolution
of 0.1" - 0.2", which still meets our scientific requirements.
We are thus confident that these observations can be carried out, and if
the acquisition presents some difficulties, we would like to kindly ask the
observers to do their best, or to contact the P.I. if needed.
Remarks on the finding charts:
- The finding charts are based on deep imaging, with limiting magnitudes of
Ks(5-sigma, Vega) = 22.6 mag for ISAAC map of GOODS/CDFS field for K20-ID6, and
Ks(5-sigma, Vega) = 20.8 mag for SOFI map of EIS/Deep3a field for all other targets.
Therefore, to help during the field acquisition, the brightest stars
(from 2MASS-PSC catalogue with magnitudes in the range K(Vega) = 13-17 mag)
are marked with the star symbols.
- In the finding charts, the square in thick solid line shows the nominal
NACO pointing. The area outlined with dashed squares indicates the
full region mapped accounting for the jitter box width.
Waiver Requests
Two Waiver Requests were submitted:
080.A-0339B.01.WAV: for an extension of P2PP submission dealine until March 30.
(submitted on August 01, 2007; Approved on August 03, 2007)
080.A-0339B.02.WAV: for an increase of the OB execution time limit to 1h30.
(submitted on October 05, 2007; Approved on October 06, 2007)
Critical Observing Condition Constraints
Transparency constraints:
- For all OBs, CLEAR sky transparency conditions is acceptable, as specified
in the proposal.
Moon constraints:
- Since our TTSs have V = 16 or fainter, we have set the constraints
for moon illumination and moon distance to 0.7 and 50 degrees, respectively,
following the recommendations from the ESO NACO P2PP Web pages
(http://www.eso.org/observing/p2pp/NACO/NACO-P2PP.html#Additional2).
Seeing constraints:
- Seeing < 0.8", as specified in the proposal.
Time-Critical Aspects
Special Execution Requirements
As we explain in the General Description, the targets are prioritized
and the observations of the higher priority targets should be completed
before starting on a new target.
Priorities are as follows:
early in P80: 1) K20-ID6 : 5 OBs
later in P80: 2) D3a-6004 : 4 OBs
3) D3a-12556 : 4 OBs
4) D3a-6397 : 2 OBs
We have also noted in the General Description that our TTSs are
rather faint. While from our experience during NACO+LGSF commissioning
and GTO run on March 25-27, 2007, we are confident the observations can
be carried out and meet our scientific requirements, please do not hesitate
to contact the PI in case of difficulties.
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 have PSF reference star OBs, do the names of those OBs begin with
PSF_ ?
If there are Finding Charts attached to your OBs, is the field-of-view
of at least one of these charts 2' x 2' (with clearly labelled field orientation)
?
Have you clearly marked and labelled your wavefront reference objects
R1, R2, R3, ... (as specified in the NAOS Preparation Software) on your Finding
Charts ?
Have you specified the magnitude of the brightest object in the field-of-view
for each OB ?
Are there objects in any of your fields (including standard stars) which
are brighter than the limits specified in the User Manual and on NACO web Pages
?
If the previous answer is yes, have you given a list of OBs and a justification
for the brightness limit violation in the general description field ?
Last creation of page: Tue Oct 6 15:40:21 2009
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