README web version of /home/usg/OPS/MTS/readme_xml/readme_76080601

Principal Investigator Email Address

```
absil@astro.ulg.ac.be
```

Estimated Total Execution Time (hours, including overheads)

```
2h
```

General Description

The objective of this programme is to image the inner part of the debris
 disk surrounding the main sequence K2 star Epsilon Eridani, around which cold dust
 has already been detected in the submm domain. Using mid-infrared imaging with VISIR,
 we will investigate the inner part of the debris disk (<30AU), which is suspected
 to harbour warm dust (temperature > 100K). The estimated size of the disk (~3"
 in N band, ~10" in Q band) make it appropriate for the VISIR field-of-view. 

Eps Eri is a very bright infrared target, with N and Q magnitudes around 1, and
 will thus be easily identified in the field-of-view (brightest target in N and Q
 band). Its coordinates are given at epoch January 2006 in the OBs, based on J2000.
 The finding charts are given in K band (2MASS images), for which Eps Eri is also
 the brightest target in the field. Note that, unlike the target star, the surrounding
 disk is supposed to be quite faint (<100mJy/arcsec2), and therefore requires
 long integration times.

Waiver Requests

```
No Waiver Request was submitted
```

Critical Observing Condition Constraints

These observations require a good seeing (<0.8") in order to achieve
 a good angular resolution.
The stability of the atmosphere should be good enough, especially in the Q band,
 to allow standard photometric calibration.

Time-Critical Aspects

```
None
```

Special Execution Requirements

```
None
```

Special Calibration Information

```
N/A
```

ToO Information

```
N/A
```

ToO Activators List

```
N/A
```

Is this a Pre-imaging run ?

```
false
```

Pre-imaging Requirements

```
N/A
```

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 ?

```
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 the provided finding chart is at a different wavelength than the observations, did you clearly describe in the README file how to identify the target?

Did you specify a guide star brighter than V=12mag within a field of r=5arcmin around the science target?

Last creation of page: Tue Oct 6 15:40:11 2009
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