README web version of /home/usg/OPS/MTS/readme_xml/readme_78029408

Principal Investigator Email Address

```
kohnaka@mpifr-bonn.mpg.de
```

Estimated Total Execution Time (hours, including overheads)

```
9.0
```

General Description

MIDI/AT observations of three oxygen-rich Mira variables at three different
 epochs.  At each
epoch, visibilities should be obtained at three position angles using three different
 baselines.  Such a homogeneous data set will provide us with a unique opportunity
 to study
the physical properties of the outer atmosphere and the dust formation zone and
 their
temporal variations.

For two calibrators, sirius and procyon, no finding charts are attached, because
 they are 
so bright that 5'x5' areas around them are completely saturated, making finding
 charts 
useless.  In either case, the calibrator is the brightest object in the surrounding
 5'x5' 
field.

Waiver Requests

```
No Waiver Request was submitted
```

Critical Observing Condition Constraints

All OBs should be carried out under "thin cirrus, variable" or better
 conditions.

Time-Critical Aspects

OBs should be carried out in March 2007.  The OBs for each science target
 with different LST ranges should be carried out as close in time as possible.  The
 OBs in this run and those in 078.D-0294(C) and 078.D-0294(F) should also be carried
 out as close in time as possible.

Special Execution Requirements

```
None
```

Special Calibration Information

Name       : HD 82668
Coordinates: 09:31:13.319 -57:02:03.757
V magnitude: 3.18
N magnitude: -1.0
Sp. type   : K5III
UD diameter: 7.13 +/- 0.079 mas
Source of UD diameter: Cohen et al. 1999, AJ, 117, 1864

ToO Information

```
None
```

ToO Activators List

```
None
```

Is this a Pre-imaging run ?

```
false
```

Pre-imaging Requirements

```
None
```

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 ?

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 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 ?

Last creation of page: Tue Oct 6 15:40:15 2009
If you have comments, please contact usd-help@eso.org