README web version of /home/usg/OPS/MTS/readme_xml/readme_76005900

Principal Investigator Email Address

```
oosterloo@astron.nl
```

Estimated Total Execution Time (hours, including overheads)

```
20
```

General Description

This project aims at spectroscopy of 10 fields NE of the  galaxy Centaurus
 A. For each field, two OBs are defined, one for spectroscopy of Halpha and one for
 [OIII]. Except  for the field position and the grism used, all OBs are the same,
 i.e. 3 jitter exposures.

The names of the OBs reflect both the field name and the line to observe. E.g. IFU_CenA_Field3_OIII
 is the OB to do spectroscopy of [OIII] of field 3. I have assigned priorities from
 1 to 10 for the fields, the priority for Halpha and for [OIII] being the same.

The constraints for these observations are not very tight. The main aim is to obtain
 lineratios of Halpha vs [NII] using the Halpha Obs, and [OIII] vs Hbeta using the
 OIII OBs. photometric conditions are therefore not required.

Each field contains faint emission-line gas, much more extended that IFU field of
 view. Hence, normal pointing accuracy of VLT is more than sufficient for acquiring
 target. So you can point and shoot.....
This also means that seeing is not important either.

Note: for one field to be observed (field 9), in the proposal a typing mistake was
 made for the position, hence the position for this field used in the OB differs
 from that in the proposal

Waiver Requests

```
No Waiver Request was submitted
```

Critical Observing Condition Constraints

```
None
```

Time-Critical Aspects

```
None
```

Special Execution Requirements

```
None
```

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 ?

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 ?

```
N/A
```

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 ?

```
N/A
```

Last creation of page: Tue Oct 6 15:40:09 2009
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