README web version of /home/usg/OPS/MTS/readme_xml/readme_78080601

Principal Investigator Email Address

```
rcwh@astro.ox.ac.uk
```

Estimated Total Execution Time (hours, including overheads)

```
4
```

General Description

This is an imaging programme with NACO to detect eccentric disks (akin
 to that of M31) in the centres of elliptical galaxies. Essentially we are looking
 for anomalies (asymmetries) within the central 1" of the surface brightness profiles
 of the galaxies. Below is a summary of the most important points to note.

1) The target is the centre of the galaxy. The centre is defined as the region within
 1" of the most luminous part of the galaxy surface brightness. 

2) There is no bright point-like object (to our knowledge) in the S27 field of view.
 Thus the galaxy can be positioned at the centre of the detector. The DIT on the
 acquision template has been set to 40s which should provide a S/N > 10 at the
 galaxy centre for positioning. 

3) Please ensure that the galaxy centre does not fall too near the edge of the chip;
 in particular, ensure that the galaxy centre is not badly affected by bad/hot pixels
 which can cluster near the edges of the detector. If the images of the galaxy centre
 were strongly affected by bad/hot pixels, it would be impossible to accurately detect
 eccentric disks.

Additional Requirements for NACO:
4) For OB_img_NGC4073, the brightest object in the field of view will be the galaxy
 with central surface brightness (k band) of 14.38 mag per square arcsec.

Waiver Requests

```
No Waiver Request was submitted
```

Critical Observing Condition Constraints

It is critical to the science goals that the seeing be <=0.6" to achieve
 optimal AO correction on the targets.

Time-Critical Aspects

```
None.
```

Special Execution Requirements

```
None.
```

Special Calibration Information

```
None.
```

ToO Information

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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 ?

```
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) ?

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 15:40:17 2009
If you have comments, please contact usd-help@eso.org