README web version of /home/usg/OPS/MTS/readme_xml/readme_84028200

Principal Investigator Email Address

```
erigliaco@arcetri.astro.it
```

Estimated Total Execution Time (hours, including overheads)

```
11 hours
```

General Description

We aim to obtain the spectra for a large sample of stars in the sigma_Ori
 region to derive the mass loss rate from the optical forbidden lines. 
Two GIRAFFE set-ups are used, namely, HR13 and HR15N.
Our sample includes about 25 objects in the mass interval 0.1-0.05 Msun with I magnitudes
 < 17.
A few fibres will be allocated to early type stars to be used for telluric correction.
Two fields are requested to cover the region.
2 OBs for field are needed with the setup HR15 (4 OBs in total)
4 OBs on the field Giraffe1 are needed with HR13 setup
3 OBs on the field Giraffe3 are needed with HR13 setup
FOR A TOTAL OF 11 OBs

Waiver Requests

```
None
```

Critical Observing Condition Constraints

The OBs:
Giraffe3-15-1-P84
Giraffe3-15-2-P84
Giraffe3-13-1-P84
Giraffe3-13-2-P84
Giraffe1-13-1-P84
Giraffe1-13-2-P84
Giraffe1-15-1-P84
Giraffe1-15-2-P84
have higher priority ('1'). 

The OBs:
Giraffe3-13-3-P84
Giraffe1-13-3-P84
Giraffe1-13-4-P84
have priority '2'

Please, finish all priority '1' OBs before moving to the priority '2' OBs.

Time-Critical Aspects

```
no time-critical aspects
```

Special Execution Requirements

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Special Calibration Information

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ToO Information

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ToO Activators List

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Do all your OBs comply with the instrument-specific requirements listed on the instrument-specific Phase 2 web page ?

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
```

Did you specify in your OBs the hour angle range for which your Target Setup files are valid ?

Did you specify in your OBs the magnitudes of FACBs and Guide Star for all your fields ?

Are the FACBs and Guide Star in the brightness ranges specified in the FLAMES manual ?

Did you enter the expected signal to noise in your OBs ?

Last creation of page: Tue Oct 6 15:40:31 2009
If you have comments, please contact usd-help@eso.org