README web version of /home/usg/OPS/MTS/readme_xml/readme_77081800

Principal Investigator Email Address

```
dac@arcetri.astro.it
```

Estimated Total Execution Time (hours, including overheads)

```
9.0
```

General Description

These observations are designed to obtain infrared spectra of the HH228
 BIPOLAR JET, associated with the TTauri star TH28 (a.k.a. THA15-28 or SZ-102). We
 require 3 slit positions. One is parallel along the axis of the bipolar jet, for
 3 wavelengths (1.29, 1.62, 2.12um). One is perpendicular to the receding jet, for
 2 wavelengths (1.62, 2.12um), as close to the star as possible without taking in
 stellar flux i.e. 0"6 along the jet. One is perpendicular to the approaching jet,
 for 2 wavelengths (1.62, 2.12um), again as close as possible to the star i.e. 0".6
 along the jet. The idea is to obtain radial velocity information across the jet
 close to its launch point. 

IR fluxes are not known, but estimated from other sources. Therefore, the jet position
 angle was estimated using the optical jet. It is possible that the IR jet is too
 faint to be seen in the acquisition image, so we need the PA to be as close as possible
 to the requested value. Furthermore, since IR fluxes are not known, the optimum
 exposure time is not known. Also, the approaching jet appears (from optical HST
 spectra) to be more embedded than the receding jet. It is not known whether a different
 exposure time for this lobe would be more suitable in the IR region also. Any obvious
 improvements to requested exposure times based on fluxes determined during excecution
 of observations would be appreciated.

Waiver Requests

```
No Waiver Request was submitted
```

Critical Observing Condition Constraints

```
Good seeing, 0".6 if possible.
```

Time-Critical Aspects

```
None
```

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 ?

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 submitted OBs for standard stars, did you use the provided StandardStar templates ?

```
N/A
```

If you are using a specific offset pattern or position angle, did you check carefully the definition in the manual ?

If you are doing spectroscopy, did you draw the slit on the Finding Charts ?

Did you enter the magnitude of the brightest star in the field-of-view in the 'Instrument Comments' field of each OB ?

```
N/A
```

If you use the MoveToPixel acquisition, have you given clear instructions on the FC and in the OB comment section as to how the field should be centered ?

```
N/A
```

Last creation of page: Tue Oct 6 15:40:14 2009
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