README web version of /home/usg/OPS/MTS/readme_xml/readme_77069600

Principal Investigator Email Address

```
lmfreyhammer@uclan.ac.uk
```

Estimated Total Execution Time (hours, including overheads)

```
7
```

General Description

Origin, duplicity and abundances of constant and oscillating blue stragglers
 in omega Cen - a new spin to understand this evolutionary puzzle.

Through a comparative study of about 100 blue stragglers and 20 main-sequence pre-turnoff
 stars with high-resolution spectroscopy we will shed light on the formation of globular
 cluster
blue straggler stars.

We use a single field centered on omega Cen, use two modes with GIRAFFE (HR2,HR4)
 and the 520nm
UVES/MEDUSA mode. If possible, the OBs should be executed in two groups separated
 in time by two
weeks or more.

Waiver Requests

```
No Waiver Request was submitted
```

Critical Observing Condition Constraints

The stellar targets are faint (V=16.5-18), so moon combined with thin
 cirrus will not be applicable

Time-Critical Aspects

To check for duplicity, we prefer a minimum of 2 weeks between execution
 of the two groups of 
observing blocks labeled "Baseline" and "Baseline+2weeks". However, the OBs for
 each group could be spread
over a few consecutive nights. In the worst case, executing all OBs in a single
 night would
still be useful.

Special Execution Requirements

To check for duplicity, we prefer a minimum of 2 weeks between execution
 of the two groups of 
observing blocks labeled "Baseline" and "Baseline+2weeks". However, the OBs for
 each group could be spread
over a few consecutive nights. In the worst case, executing all OBs in a single
 night would
still be useful.

Special Calibration Information

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ToO Information

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ToO Activators List

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Is this a Pre-imaging run ?

```
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 ?

```
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 ?

```
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 15:40:14 2009
If you have comments, please contact usd-help@eso.org