README web version of /home/usg/OPS/MTS/readme_xml/readme_82024401

Principal Investigator Email Address

```
asollima@iac.es
```

Estimated Total Execution Time (hours, including overheads)

```
7.8
```

General Description

The goal of the proposed observations is to measure accurate radial velocities
for a sample of stars at magnitude V~21 in a region at a distance of 1.5 tidal
radii from the center of the globular cluster NGC1851 with VIMOS. The total
amount of time of these observations is 7.8h overhead included.

Waiver Requests

```
No Waiver Request was submitted.
```

Critical Observing Condition Constraints

Our target are relatively faint, so a seeing better than 1.0" is required.
 Since
VIMOS can observe at a maximum distance of 2h from the meridian the limiting
airmass turns out to be 1.2 .

Time-Critical Aspects

No time critical aspects are present in these observations.

Special Execution Requirements

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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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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 suitable guide stars for all your OBs using Guidecam ?

Did you check that the chosen guide stars are suitable for all the offset positions and that they do not produce unacceptable vignetting of the field of view ?

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