README web version of /home/usg/OPS/MTS/readme_xml/readme_78062400

Principal Investigator Email Address

```
mwittkow@eso.org
```

Estimated Total Execution Time (hours, including overheads)

```
8
```

General Description

These are AMBER and MIDI observations of the stellar diameter and circumstellar
environment of the Mira stars S Ori and GX Mon.

This run A consists of two AMBER observations of each source using UT1-2-3.
The OBs of this run are time critical and should be executed early February, 
when coordinated VLBA observations of both sources are scheduled as well.

There is no constraint on the LST range, but the two observations of the same
source shall preferably be executed at a somewhat different LST.

Both stars are variable stars. The V magnitude of S Ori varies between
V=7.2 (mid November 2006) and V=14 (mid June 2007).

GX Mon varies between V~13.2 and V~17 (exact lightcurve unknown).
The OBs list the maximum V brightness.
The variability in the near-and mid-infrared is less than about 0.5mag.

Waiver Requests

```
No Waiver Request was submitted
```

Critical Observing Condition Constraints

```
none
```

Time-Critical Aspects

This run  shall be executed early february, when coordinated VLBA
observations of both sources are expected.

Special Execution Requirements

S Ori has a higher priority than GX Mon.

Special Calibration Information

```
none
```

ToO Information

---(Empty)---

ToO Activators List

---(Empty)---

Is this a Pre-imaging run ?

```
false
```

Pre-imaging Requirements

---(Empty)---

Source(s) of Pre-imaging

---(Empty)---

Pre-imaging sources not listed above

---(Empty)---

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 indicate for each science star OB the corresponding calibrator star OB (and vice versa) in the 'Instrument Comments' field ?

Did you check that your chosen calibrator is bright enough for the instrument mode used ?

If you use calibrator stars which are not in the CalVin database, did you specify their characteristics in the README file and in the OBs ?

```
N/A
```

Last creation of page: Tue Oct 6 15:40:16 2009
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