README web version of /home/usg/OPS/MTS/readme_xml/readme_81062000

Principal Investigator Email Address

```
pascale.jablonka@obs.unige.ch
```

Estimated Total Execution Time (hours, including overheads)

```
16
```

General Description

We  are completing our  program  079.B-0672(A) by obtaining
UVES spectra for  the remaining four  of six very metal-poor  stars in
the nearby  dwarf  spheroidal galaxies  Sculptor, Fornax  and  Sextans
These stars have been  identified as the  most metal-poor stars in our
DART Calcium triplet survey of about 2000 stars, which offers the most
complete metallicity distribution  to date.   We will derive  accurate
abundances for a wealth of elements, thereby constraining the earliest
phase  of star  formation in  these  galaxies and  enabling a  careful
comparison to the metal-poor stars in  the Milky-Way.

Waiver Requests

We had submitted a waiver, now accepted to change our set-up from the
 red arm only
to DIC#1 390+580

Critical Observing Condition Constraints

```
None
```

Time-Critical Aspects

```
None
```

Special Execution Requirements

The only particularity of these observation concerns
the guide camera that we set in RED while we are observin with DIC#1 3900-580.
Indeed the red part of the stellar spectra constitute our primary target. In order
 to limit the effect of the atmospheric diffraction, we open the blue slit to 1.2
 arcsec (red slit is 1arcsecc wide) and we require observations at airmasses below
 1.6.

Special Calibration Information

```
None
```

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 specified the S/N ratio at given wavelength in the User Comments field of each OB?

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
```

If you need secondary guiding, are there suitable objects within 30 arcsec from your target ?

Last creation of page: Tue Oct 6 15:40:24 2009
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