README web version of /home/usg/OPS/MTS/readme_xml/readme_83018700

Principal Investigator Email Address

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sbarufatti@ifc.inaf.it
```

Estimated Total Execution Time (hours, including overheads)

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16
```

General Description

The knowledge of blazar redshifts is mandatory to constrain the physics
 of the central engine, relativistic jets, 
emission models and bolometric power. Moreover, the study of gamma-ray absorption
 from blazars at di?erent 
redshifts is mandatory to obtain informations on the Extragalactic Background Light.
 The quasi featureless 
spectrum of BL Lacs often hinders the redshift determination. Here we propose an
 easy and successful ?ller pro- 
gram, aimed at obtaining high S/N BL Lac spectra using VLT in SM under non-optimal
 seeing/sky conditions. 
The science result will be maximized by: 1) using the new redshift to model blazar
 emission in the frame of 
the new Fermi gamma-ray missions, 2) studying spectral features of blazar with an
 intriguing close environment (i.e.: 
close companions, intervening halos, small galaxy groups).

Waiver Requests

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No Waiver Request was submitted
```

Critical Observing Condition Constraints

There are no Critical Observing Conditions

Time-Critical Aspects

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There are no Time-Critical Aspects
```

Special Execution Requirements

There are no Special Execution Requirements

Special Calibration Information

There are no Special Calibrations needed

ToO Information

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This is not a ToO run
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ToO Activators List

---(Empty)---

Is this a Pre-imaging run ?

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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 ?

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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 ?

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N/A
```

Have you included OBs for any calibrations that you need but which are not part of the Calibration Plan ?

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N/A
```

If you are observing Moving Targets, have you attached suitable ephemeris files to your OBs?

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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 ?

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N/A
```

If you have prepared your finding charts with tools other than FIMS, do they comply with the specifications on the FORS1 Phase 2 web page ?

Last creation of page: Tue Oct 6 15:40:29 2009
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