README web version of /home/usg/OPS/MTS/readme_xml/readme_78024300

Principal Investigator Email Address

```
isella@arcetri.astro.it
```

Estimated Total Execution Time (hours, including overheads)

```
6h
```

General Description

The aim of the run is to obtain K band low resolution VLTI-AMBER near
 infrared interferometric observations of the A5 PMS-star MWC758. MWC758 is bright
 in the K band (K=5.8), fulfilling the actual instrumental limit, the expected correlated
 magnitude is in the range 6.0-6.5. We need to observe the target at four different
 hour angles (approx -1.5h, 0h, 1.5h, 3h) with the UT1-UT3-UT4 telescope configuration.
 Adopting the LR-K mode, the flux in H band can be used by IRIS in order to provide
 the best injection stability in K band for all the three baselines.

Waiver Requests

```
No Waiver Request was submitted
```

Critical Observing Condition Constraints

No critical observing condition constraints

Time-Critical Aspects

The scientific OBs should be performed at four different hour angles,
 approximately at -1.5h, 0h, 1.5h, 3h

Special Execution Requirements

Adopting the LR-K mode, the flux in H band can be used by IRIS in order
 to provide the best injection stability in K band for all the three baselines.

Special Calibration Information

The execution of the four calibration OBs is essential in order to obtain
 calibrated visibilities for the target star. The calibration OBs should be executed
 just before or after each relative scientific OB.
  
The calibrator star is the main sequance star HD34053 (alpha=5:15:27.66; delta =
 22:17:05.5): it is a A2V star with magnitude V=6.263 and K=5.905. Observed with
 a baseline of 130m at 2.1micron, the star is unresolved with a squared visibility
 equal to 0.988+-0.002.

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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Source(s) of Pre-imaging

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Pre-imaging sources not listed above

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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 ?

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 ?

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