README web version of /home/usg/OPS/MTS/readme_xml/readme_83033700

Principal Investigator Email Address

```
r.a.d.wijnands@uva.nl
```

Estimated Total Execution Time (hours, including overheads)

```
25.7
```

General Description

This is a spectroscopy run for seven sources (SAX J1324.4-6200, SAX J1452.8-5949,
 AX J1700.1-4157, AX J1740.1-2847, AX J1749.2-2725, AX J1820.5-1434 and AX J1832.3-0840)
 to identify their spectral type and imaging of AX J1820.5-1434 and AX J1832.3-0840.
 

Four sources are fainter than 16 mag in Ks waveband, thus to increase the signal
 to noise ratio, we have given multiple OBs of them with the names : target - H-2
 and target - Ks-2

All the OBs for target stars should be followed with the observations of a telluric
 standard.

We have given here the OBs which should be executed in a set of 2 as for our scientic
 goal, telluric standard of proper spectral type should be observed immediately after
 the target star.

1. SAX J1324.4-6200 - H
2. Hip065565 - H

1. SAX j1324.4-6200 - Ks
2. Hip065565 - Ks

1. SAX J1452.8-5949 - H
2. Hip072507 - H

1. SAX J1452.8-5949 - Ks
2. Hip072507 - Ks

1. AX J1700.1-4157 - H
2. Hip083460 -H

1. AX J1700.1-4157 - Ks
2. Hip083460 -Ks

1. AX J1740.1-2847 - H
2. Hip086285 - H

1. AX J1740.1-2847 - Ks
2. Hip086285 - Ks

1. AX J1749.2-2725 - H
2. Hip087038 - H


1. AX J1749.2-2725 - Ks
2. Hip087038 - Ks

1. AX J1820.5-1434 - H
2. Hip089673 - H

1. AX J1820.5-1434 - Ks
2. Hip089673 - Ks

For two of our sources (AX J1820.5-1434, AX J1832.3-0840), we have their identification
 only in 2MASS images. These sources could be a combination of 2 or more stars. However,
 we have marked the exact position of these sources (using their X-ray position measurement)
 in their 2MASS images and submitted their imaging OBs.

Waiver Requests

WaiverID:  083.D-0337A.01 

Waiver request submitted on : Feb 3, 2009
Got reply on : Feb 4, 2009

We requested to approve an exposure time of 3 hrs for three of our sources. However,
 we didn't get our waiver request approved. 

second waiver request : "We also requested SW spectroscopy in H and Ks filter for
 all the sources and
if I put it both the filters in one OB, the execution time exceeds more than 1 hr.
 So I request a waiver for it also."

-> it IS possible to specify two broadband filters in one OB. You do not need
 a waiver for this.

Critical Observing Condition Constraints

All of our sources are present in the crowded field where other stars
 are also present within 2 arcsec or so. Thus we need good seeing and photometric
 nights so that these sources do not overlap with one another. We would like to observe
 our targets atleast 60 degree away from moon, as moon brightness affects the observations
 significantly at short wavelengths.

Time-Critical Aspects

We would like to observe our sources at airmass less than 2 so that we
 get good signal to noise ratio with the exposure times given in their OBs. However
 we don't have any time constraints for our observations.

Special Execution Requirements

With the constraints of making the OBs not more than one hour, and to
 maximum utilize our observing time, we would like to observe each of our source
 in a set of 3 OBs as follows : first OB will take spectrum of target star at 1.65
 micron (naming convention : target-H), second OB will take spectrum of calibration
 star at 1.65 micron first and then at 2.2 micron (both spectra are a part of one
 OB), third OB will take spectrum of target star at 2.2 micron (naming convention
 : target-Ks). This way in three OBs, we will be able to obtain and calibrate the
 object spectrum at 1.65 and 2.2 micron. Sources for which OBs are prepared in this
 manner are SAX J1324.4-200, AX J1749.2-2725 and AX J1820.5-1434.

However, four sources are fainter than 16 mag in Ks waveband, thus to increase the
 signal to noise ratio, we have divided their OB in 4-5 OBs as follows : target -
 H-1, target H-2 and similarly target-Ks-1, target Ks-2. Here we would like to observe
 all H spectra (1.65 micron) together and then calibration star in H (1.65 micron)
 and Ks (2.2 micron) waveband, followed further by all Ks (2.2 micron) waveband spectrum
 of the same target star.

All the sources can be observed at different times but the runs related to individual
 source should be executed together. We have put the runs related to sources in the
 same order in which they have to be observed. 

1. SAX J1324.4-6200 - H
2. Hip065565
3. SAX j1324.4-6200 - Ks

1. SAX J1452.8-5949 - H-1
2. SAX J1452.8-5949 - H-2 
3. Hip072507 - HKs (at 1.65 and then at 2.2 micron)
4. SAX J1452.8-5949 - Ks-1
5. SAX J1452.8-5949 - Ks-2

1. AX J1700.1-4157 - H-1
2. AX J1700.1-4157 - H-2
3. Hip083460 -HKs
4. AX J1700.1-4157 - Ks-1
5. AX J1700.1-4157 - Ks-2

1. AX J1740.1-2847 - H
2. Hip086285 - HKs
3. AX J1740.1-2847 - Ks-1
4. AX J1740.1-2847 - Ks-2

1. AX J1749.2-2725 - H
2. Hip087038
3. AX J1749.2-2725 - Ks

1. AX J1820.5-1434 - H
2. Hip089673
3. AX J1820.5-1434 - Ks

1. AX J1832.3-0840 - H-1
2. AX J1832.3-0840 - H-2
3. Hip090320
4. AX J1832.3-0840 - Ks-1
5. AX J1832.3-0840 - Ks-2

For two of our sources (AX J1820.5-1434, AX J1832.3-0840), we have their identification
 only in 2MASS images. These sources could be a combination of 2 or more stars. However,
 we have marked the exact position of these sources (using X-ray position) in their
 2MASS images and we request you to take the spectra of these sources exactly at
 the position marked in their field charts.

Special Calibration Information

We have submitted calibration OBs for telluric line corrections which
 is required to identify the spectral type of our stars. We expect our sources to
 be Be stars, thus we have chosen dwarfs of type G from Hipparcos catalog for telluric
 line corrections.

ToO Information

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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 ?

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 ?

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 ?

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 15:40:29 2009
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