README web version of /home/usg/OPS/MTS/readme_xml/readme_81045400

Principal Investigator Email Address

```
razevedo@astro.up.pt
```

Estimated Total Execution Time (hours, including overheads)

```
4.67
```

General Description

We propose to take several spectra of 4 Classical T Tauri stars in the
 wavelength region of the infrared HeI 10830AA and Pa\gamma lines using ISAAC in
 the SWS-MR mode centered in 10750\AA, with different slit orientations, in order
 to do spectroastrometry.

For each star there are 4 OBs, with different slit orientations. According to waiver
 381.C-0454A.01.WAV, the 4 OBs of each star should be executed consecutively.

Please note Support Request Number USD - 22726 regarding estimated total execution
 time.

Note: V866 Sco is a binary. The primary, which is also the brightest star, is the
 requested target. Should be located north when compared to the secondary.

Waiver Requests

381.C-0454A.01.WAV - The 4 OBs of each star must be executed consecutively.

Critical Observing Condition Constraints

The OBs should not be carried out when the seeing is *less* than 1.0,
 as to minimize the possibility of spectroastrometric artifacts formation.

Time-Critical Aspects

```
None.
```

Special Execution Requirements

---(Empty)---

Special Calibration Information

---(Empty)---

ToO Information

---(Empty)---

ToO Activators List

---(Empty)---

Is this a Pre-imaging run ?

```
false
```

Pre-imaging Requirements

---(Empty)---

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 ?

```
N/A
```

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 ?

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
```

If you submitted OBs for standard stars, did you use the provided StandardStar templates ?

```
N/A
```

If you are using a specific offset pattern or position angle, did you check carefully the definition in the manual ?

If you are doing spectroscopy, did you draw the slit on the Finding Charts ?

Did you enter the magnitude of the brightest star in the field-of-view in the 'Instrument Comments' field of each OB ?

```
N/A
```

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 ?

```
N/A
```

Last creation of page: Tue Oct 6 15:40:24 2009
If you have comments, please contact usd-help@eso.org