README web version of /home/usg/OPS/MTS/readme_xml/readme_84090503

Principal Investigator Email Address

```
dougados@obs.ujf-grenoble.fr
```

Estimated Total Execution Time (hours, including overheads)

```
1.5
```

General Description

The goal of this program is to resolve the jet-lauching regions of T Tau
 N, a bright solar-mass young star in order to derive key parameters like the spatial
 extent and the morphology of these region.

We therefore propose observations with AMBER in its high spectral resolution mode,
 around Brackett Gamma line. The line is at 2.166 microns, but the AMBER mode is
 High_K_1_2.172.
From our experience, it is necessary to record a lot of exposures on the science
 target in order to achieve a good signal-to-noise ratio on the data.
To this goal, we added some observing time (30min) on the target. Consequentely,
 this program is 1hour on the target and half an hour on the calibrator.

We attached large scale finding charts and an additional NACO image for the science
 target, because the environment of T Tau is complex: it is a triple system, constituted
 of a T Tau N (the source of this program, that is at the center of the finding charts)
 and of a close binary T Tau S, located at 0.7" south. This binary will be clearly
 seen on the guiding camera. As T Tau N is the brightest object, it should not be
 a problem, and the south binary could simply be used to check that the guiding is
 correct.

The calibrator has been found with ASPRO (diameter: 0.4+-0.02 mas).

Any correspondance about this program should be sent to both C.Dougados (dougados@obs.ujf-grenoble.fr)
 and M.Benisty (benisty@arcetri.astro.it)

Waiver Requests

```
No Waiver Request was submitted
```

Critical Observing Condition Constraints

```
NA
```

Time-Critical Aspects

```
NA
```

Special Execution Requirements

```
NA
```

Special Calibration Information

```
NA
```

ToO Information

```
NA
```

ToO Activators List

```
NA
```

Is this a Pre-imaging run ?

```
false
```

Pre-imaging Requirements

```
NA
```

Source(s) of Pre-imaging

---(Empty)---

Pre-imaging sources not listed above

---(Empty)---

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 ?

```
N/A
```

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 ?

```
N/A
```

If you are observing Moving Targets, have you attached suitable ephemeris files to your OBs?

```
N/A
```

If you have preferences which OBs should be executed first, did you make use of the User Priority field in the OBs ?

```
N/A
```

If this is a run that requires coordinated observations with other facilities, did you give proper instructions in the Time-Critical Aspects Section ?

```
N/A
```

Did you indicate for each science star OB the corresponding calibrator star OB (and vice versa) in the 'Instrument Comments' field ?

Did you check that your chosen calibrator is bright enough for the instrument mode used ?

If you use calibrator stars which are not in the CalVin database, did you specify their characteristics in the README file and in the OBs ?

Do you use the same DIT for pairs of science target and associated calibrator?

Are the magnitudes of science target and calibrator within +/- 1 mag ?

Did you verify that your coordinates are as accurate as possible (2Mass coordinates recommended) and that they include proper motions if available ?

Did you specify the LST range of the calibrators such that they cover the range from 30 min before the start of the LST range of the science target to 30 min after the end of the LST range of the science target ?

Last creation of page: Tue Oct 6 15:40:32 2009
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