README web version of /home/usg/OPS/MTS/readme_xml/readme_78021700

Principal Investigator Email Address

```
Hans.Ludwig@obspm.fr
```

Estimated Total Execution Time (hours, including overheads)

```
29.0 hours
```

General Description

This observing run is performing high-resolution spectroscopy of metal-poor
 dwarf stars selected from the Sloan Digital Sky Survey. The goal is to obtain overall
 metallicities as well as individual abundances. The spectra are generally going
 to have modest signal-to-noise (S/N ~ 14 ...38 @ 400 nm). Lunar illumination and
 sky transparency are not critical, thin cirrus is acceptable. The targets are named
 "SDSS-", the observing blocks are named "SDSS--". The finding chart in the OBs belonging to the same target star
 is the same.  
To achieve the targetted S/N we would like to have all OBs belonging to the same
 target completed, if possible.

Waiver Requests

Related to observing blocks with duration longer than one hour

Waiver request submitted 2006-07-19
Waiver request approved  2006-07-21 (by USD support scientist Francesca Primas)

WaiverID  078.D-0217A.01


Related to change of programme targets 

Waiver request submitted 2006-07-21
Waiver request approved  2006-07-27 (by USD support scientist Fernando Comeron)

WaiverID 078.D-0217A

N.B. the coordinates of some targets given in the original proposal were in error

Critical Observing Condition Constraints

```
None
```

Time-Critical Aspects

```
None
```

Special Execution Requirements

```
None
```

Special Calibration Information

```
None
```

ToO Information

```
Not applicable
```

ToO Activators List

```
Not applicable
```

Is this a Pre-imaging run ?

```
false
```

Pre-imaging Requirements

```
Not applicable
```

Source(s) of Pre-imaging

---(Empty)---

Pre-imaging sources not listed above

---(Empty)---

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
```

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

```
N/A
```

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