README web version of /home/usg/OPS/MTS/readme_xml/readme_77017701

Principal Investigator Email Address

```
prosati@eso.org
```

Estimated Total Execution Time (hours, including overheads)

```
12.0
```

General Description

This is an FORS2 MXU program to obtain redshifts of faint/red galaxies
 in an X-ray cluster at z=1.4 (Mullis et al. 2005 ApJ, 623, L85). There are 2 masks.
 Each mask consists of 4 OBs which differ only by a 1-2 pixel shift along the slits.
 Each OB is made of 3 dithered exposures with 1.5 arcsec steps. 
Objects are generally too faint to be seen in the thru-slit, however a few (relatively)
 bright objects have been placed on typically short slits to facilitate the thru-slit
 check.

The masks were designed on a FORS2 z-band image (8 min total exposure) which has
 been astrometrically calibrated with an accuracy of ~0.1 arcsec rms accuracy (using
 GSC2 and HST-ACS images).

Waiver Requests

A waiver for OBs longer than 1 hr (<90min) has been granted

Critical Observing Condition Constraints

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None
```

Time-Critical Aspects

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None
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Special Execution Requirements

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None
```

Special Calibration Information

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None
```

ToO Information

---(Empty)---

ToO Activators List

---(Empty)---

Is this a Pre-imaging run ?

```
false
```

Pre-imaging Requirements

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None
```

Source(s) of Pre-imaging

---(Empty)---

Pre-imaging sources not listed above

```
See comment in General Description
```

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 ?

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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 ?

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N/A
```

Have you included OBs for any calibrations that you need but which are not part of the Calibration Plan ?

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N/A
```

If you are observing Moving Targets, have you attached suitable ephemeris files to your OBs?

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N/A
```

If you have preferences which OBs should be executed first, did you make use of the User Priority field in the OBs ?

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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 have prepared your finding charts with tools other than FIMS, do they comply with the specifications on the FORS2 Phase 2 web page ?

Last creation of page: Tue Oct 6 15:40:12 2009
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