README web version of /home/usg/OPS/MTS/readme_xml/readme_77005501

Principal Investigator Email Address

```
ignacio@dfists.ua.es
```

Estimated Total Execution Time (hours, including overheads)

```
1
```

General Description

The purpose of this OB is obtaining a spectrum of a candidate to be the
 optical counterpart to the X-ray source SAX J1818.6-1703. We want to check from
 the spectrum whether the object is a blue supergiant. The star is very red. We assume
 it is a very reddened OB star.
 We want to observe: H-alpha (check for emission) and the I-band for spectral classification
 (as it is too faint in the blue). We hence select G300I
 In order to correct for fringeing, we split the exposure in 4 offsets along the
 slit.

Waiver Requests

```
No Waiver Request was submitted
```

Critical Observing Condition Constraints

```
No special conditions required.
```

Time-Critical Aspects

```
none
```

Special Execution Requirements

---(Empty)---

Special Calibration Information

---(Empty)---

ToO Information

---(Empty)---

ToO Activators List

---(Empty)---

Is this a Pre-imaging run ?

```
false
```

Pre-imaging Requirements

---(Empty)---

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 you have prepared your finding charts with tools other than FIMS, do they comply with the specifications on the FORS2 Phase 2 web page ?

```
N/A
```

Last creation of page: Tue Oct 6 15:40:12 2009
If you have comments, please contact usd-help@eso.org