README web version of /home/usg/OPS/MTS/readme_xml/readme_75047500

Principal Investigator Email Address

```
roud@ast.leeds.ac.uk
```

Estimated Total Execution Time (hours, including overheads)

```
25
```

General Description

This proposal is to do a systematic study of binarity of Be stars. To
 this end an equal number (about 45) of Be stars and B stars are imaged at high resolution
 to detect binary companions.

The data are simple "snapshots in AO imaging mode. As the sources are bright (typically
 V~5), they can act as their own reference star, while they are, by far, the brightest
 in the field. Many objects are expected to be single and can act as PSF reference,
 while photometry can be bootstrapped from existing data, so no standard required
 either. 

The objects are so bright, they dominate any finding chart and by agreement, none
 have been provided. The star will be the *brightest* star in the field and easily
 recognisable.  In the unlikely event that it is hard to find the star or if there
 are strong doubts, I suggest to drop it and move on to the next one. The decision
 is with the observer which I will accept.

The sample spans the RA range RA 5-23, so that some are always visible during the
 semester. If needed, the PI can provide additional targets. The numbers of the target
 names  refer to their HR number.

Waiver Requests

```
No Waiver Request was submitted
```

Critical Observing Condition Constraints

Seeing < 1.4 arcsec
Thin Cloud
For the vast majority of objects airmass < 1.2, for a few objects < 1.4 applies

Time-Critical Aspects

There are no time critical aspects to this proposal

Special Execution Requirements

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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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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 ?

```
N/A
```

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
```

If you have PSF reference star OBs, do the names of those OBs begin with PSF_ ?

```
N/A
```

If there are Finding Charts attached to your OBs, is the field-of-view of at least one of these charts 2' x 2' (with clearly labelled field orientation) ?

```
N/A
```

Have you clearly marked and labelled your wavefront reference objects R1, R2, R3, ... (as specified in the NAOS Preparation Software) on your Finding Charts ?

```
N/A
```

Have you specified the magnitude of the brightest object in the field-of-view for each OB ?

Are there objects in any of your fields (including standard stars) which are brighter than the limits specified in the User Manual and on NACO web Pages ?

If the previous answer is yes, have you given a list of OBs and a justification for the brightness limit violation in the general description field ?

```
N/A
```

Last creation of page: Tue Oct 6 15:40:07 2009
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