README web version of /home/usg/OPS/MTS/readme_xml/readme_82007800

Principal Investigator Email Address

```
rfc@ast.cam.ac.uk
```

Estimated Total Execution Time (hours, including overheads)

```
15:59:12.000
```

General Description

Our single science target is a z_em=1.71 QSO with magnitude about 14.9
 in V. There is a sub-damped Lyman alpha system at z_abs=1.1508 which shows many
 complex metal absorption lines. Our primary goal is to obtain spectra with high
 S/N around 340nm and between 504 and 613nm to cover the most important metal lines
 of interest.

Each OB is the same: all OBs use dichroic 1 in the 346+580nm setting and they all
 contain an attached ThAr wavelength calibration template.

Over the past decade, this object's brightness has changed from time to time by
 about 0.3mag in V. Therefore, it is possible that the object is a little fainter
 (or brighter) than used to calculate the S/N at 550nm in the Instrument Comments
 field in each OB.

If there are any questions related to the OBs or their execution, please contact
 Michael Murphy  first. Failing that, the PI is the next
 contact.

Waiver Requests

```
No Waiver Request was submitted
```

Critical Observing Condition Constraints

None, apart from the constraint set specified in each OB.

Time-Critical Aspects

```
None.
```

Special Execution Requirements

---(Empty)---

Special Calibration Information

A ThAr wavelength calibration template is included after the science exposure
 in each OB.

ToO Information

```
None.
```

ToO Activators List

```
None.
```

Do all your OBs comply with the instrument-specific requirements listed on the instrument-specific Phase 2 web page ?

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 ?

```
N/A
```

Last creation of page: Tue Oct 6 15:40:26 2009
If you have comments, please contact usd-help@eso.org