README web version of /home/usg/OPS/MTS/readme_xml/readme_84070700

Principal Investigator Email Address

```
silverma@phys.ethz.ch
```

Estimated Total Execution Time (hours, including overheads)

```
0.48
```

General Description

This OB is designed to acquire pre-imaging used to design masks for MOS
 observations with VIMOS using the LRblue grism in P84.

We request one image per pointing (ECDFS #2,#3), having an exposure time of 300
 sec each, to be taken with the R filter.  These R-band images will be used for transforming
 our user-supplied input catalg into the astrometric system of VIMOS.  These exposures
 will enable us to detect a sufficient number of objects (~60) per quadrant to perform
 the coordinate transformation.  In addition, a number of brighter science targets
 will be detected and used to confirm their location within the designed slits.

Waiver Requests

```
No Waiver Request was submitted
```

Critical Observing Condition Constraints

```
None.
```

Time-Critical Aspects

```
None.
```

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 ?

```
true
```

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 ?

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 15:40:32 2009
If you have comments, please contact usd-help@eso.org