README web version of /home/usg/OPS/MTS/readme_xml/readme_84100900

Principal Investigator Email Address

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

Estimated Total Execution Time (hours, including overheads)

```
0.48
```

General Description

These OBs are designed to acquire pre-imaging used to design masks for
 MOS observations with VIMOS using the HRorange grism in P84.

We request two pre-images (CDFS_A, CDFS_B) each having an exposure time of 300 sec.
  The R-filter will be used for all exposures.  These R-band pre-images will be used
 for transforming our user-supplied catalog 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 visible to confirm that they fall within the designed slits.

Waiver Requests

```
No Waiver Request was submitted
```

Critical Observing Condition Constraints

```
None.
```

Time-Critical Aspects

```
None.
```

Special Execution Requirements

```
None.
```

Special Calibration Information

```
None.
```

ToO Information

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ToO Activators List

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Is this a Pre-imaging run ?

```
true
```

Pre-imaging Requirements

```
R-band filter
```

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