README web version of /home/usg/OPS/MTS/readme_xml/readme_82501500

Principal Investigator Email Address

```
guenther@tls-tautenburg.de
```

Estimated Total Execution Time (hours, including overheads)

```
0.8 h
```

General Description

The observation should be carried out using the star as NGS.

The aim of the project is to find out, whether there is a faint star close to LRa01-E2-0165.
 This requires subtracting the PSF from the star,
in order to search for a faint star in the halo of E2-0165. Rather than using a
 different star in order to model the PSF we will use E2-0165.
Previous experience shows that this is best be done, if the instrument is rotated
 in steps. We plan to use five steps: -45,-22.5,0,+22.5,+45 degrees.
It is important that the PSF of E2-0165 is not saturated. Given the J-magnitude
 of 10.3 the star should not saturate with the 20s DITs chosen.

Please note: The results of this run are essential for the other observations of
 this target. 
It is thus important to carry out this OB soon in order to schedule the other observations:

If a faint star is found, we will have to trigger also 282.C-5015(B).
If no star is found, we will begin take a large number of HARPS observations (about
 100!). 
Scheduling so many HARPS observations is difficult and we have to do this as soon
 
as possible in order to obtain them.

Waiver Requests

```
No Waiver Request was submitted
```

Critical Observing Condition Constraints

Observations can be carried out under almost any conditions.

Time-Critical Aspects

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Not time critical.
```

Special Execution Requirements

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Special Calibration Information

Normal calibration is sufficient for this project.

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 ?

```
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 ?

```
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
```

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) ?

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

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 15:40:28 2009
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