README web version of /home/usg/OPS/MTS/readme_xml/readme_77001800

Principal Investigator Email Address

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fprimas@eso.org
```

Estimated Total Execution Time (hours, including overheads)

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24h
```

General Description

The main goal is to derive Li abundances (and some alpha elements like
 Na and Mg) in stars
at different evolutionary stages (from the MS to the upper RGB) in NGC6397 in order
 to constrain recent theories of internal mixing. 

Targets range in magnitude from V=11.5 to V=17, with brighter targets allocated
 to UVES fibres (R580 set-up) and the rest allocated to MEDUSA. Observation Blocks
 (24 in total) are grouped according to the fibre configuration (5 in total, A,B,C,D,E)
 and to the GIRAFFE set-up (HR13 and HR15). Fibre configurations A, B, and E have
 2 OBs each (x 2 set-ups), whereas fibre configurations C and D have 3 OBs each (x
 2 set-ups).

Note that fibre configuration C uses only 3 reference stars. Furthermore, one reference
 star (allocated to Fibre_85) common to fibre configurations A,B,D,E falls in a very
 crowded field.
If you have problems, please give higher weight to the other 3.

Waiver Requests

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No Waiver Request was submitted
```

Critical Observing Condition Constraints

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None
```

Time-Critical Aspects

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None
```

Special Execution Requirements

All OBs for a given fibre configuration should be completed first, before
 moving to a new
configuration. 

If possible, please execute OBs following the sequence B, E, A, C, D,  i.e.:

1. NGC6397_HR13,15_B*
2. NGC6397_HR13,15_E*
3. NGC6397_HR13,15_A*
4. NGC6397_HR13,15_C*
5. NGC6397_HR13,15_D*

Special Calibration Information

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None
```

ToO Information

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ToO Activators List

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Is this a Pre-imaging run ?

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false
```

Pre-imaging Requirements

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Source(s) of Pre-imaging

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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 ?

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N/A
```

Have you included OBs for any calibrations that you need but which are not part of the Calibration Plan ?

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N/A
```

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

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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 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 15:40:12 2009
If you have comments, please contact usd-help@eso.org