README web version of /home/usg/OPS/MTS/readme_xml/readme_79039900

Principal Investigator Email Address

```
Jonay.Gonzalez-Hernandez@obspm.fr
```

Estimated Total Execution Time (hours, including overheads)

```
15 hours
```

General Description

The scientific goal is to compare the Li abundance in stars of the same
 Teff above and below the turn-off of the cluster. Since the stars below the TO are
 much fainter we keep the fiber assigned to the same set of 80 stars for all the
 15 OBs to reach the desired S/N ratio. There are 5 fiber configuration files. In
 each, 16 MEDUSA fibers are assigned to subgiant stars (i.e. above the turn-off).
 Each configuration has to be used for 3 different OBs. Remaining fibers are assigned
 to sky positions. At the end of the sequence, one has 80 dwarfs and 80 subgiants
 observed with comparable signal-to-noise. UVES fibers are assigned to RGB stars,
 4 are always on the same stars at the base of the RGB, 2 are on stars which span
 a range in RGB luminosity and 2 always to the sky.

The priorities are assigned in such a way that each fiber configuration should complete
 the set of 3 OBs before starting the next fiber configuration. 

Spectrograph configuration is the same for all OBs.

Waiver Requests

```
No Waiver Request was submitted
```

Critical Observing Condition Constraints

```
No critical constraints
```

Time-Critical Aspects

```
No time-critical aspects
```

Special Execution Requirements

```
No
```

Special Calibration Information

```
No
```

ToO Information

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ToO Activators List

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Is this a Pre-imaging run ?

```
false
```

Pre-imaging Requirements

---(Empty)---

Source(s) of Pre-imaging

---(Empty)---

Pre-imaging sources not listed above

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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
```

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 15:40:19 2009
If you have comments, please contact usd-help@eso.org