README web version of /home/usg/OPS/MTS/readme_xml/readme_78069601

Principal Investigator Email Address

```
boekel@mpia.de
```

Estimated Total Execution Time (hours, including overheads)

```
3.2
```

General Description

The goal of this programme is to determine spectral types, ages (by LiI
 absorption), and accretion characteristics (H alpha) of members of young star clusters.

In Spitzer data of the field, numerous YSO candidates have been identified on the
 basis of their IR colors. These stars have been identified in the pre-imaging and
 all have had their slits assigned. Some remaining slits have been assigned to other
 stars in the field that do not have obious YSO (i.e. circumstellar disk) colors.
 These may be young stars that have evolved further and have already lost their disk.
 In this case they should still show LiI absorption. Alternatively, they may be unrelated
 objects.

Waiver Requests

The two OBs in this programme each take about 1 1/2 hours, a waiver request
 was submitted Nov 15 and approved Nov 16.

Critical Observing Condition Constraints

```
none
```

Time-Critical Aspects

```
none
```

Special Execution Requirements

```
none
```

Special Calibration Information

the standard calibrations will be sufficient

ToO Information

```
none
```

ToO Activators List

```
none
```

Is this a Pre-imaging run ?

```
false
```

Pre-imaging Requirements

```
none
```

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
```

Did you specify suitable guide stars for all your OBs using Guidecam ?

```
N/A
```

Did you check that the chosen guide stars are suitable for all the offset positions and that they do not produce unacceptable vignetting of the field of view ?

Last creation of page: Tue Oct 6 15:40:16 2009
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