README web version of /home/usg/OPS/MTS/readme_xml/readme_82038400

Principal Investigator Email Address

```
stefano.ciprini@pg.infn.it
```

Estimated Total Execution Time (hours, including overheads)

```
20:59:39
```

General Description

The knowledge of blazar redshifts allows to constraint the physics of
 central engine, relativistic jets, high- 
energy emission models and bolometric power. The absorption of ? -rays emitted by
 blazar-probes at different 
z, provide us also crucial information on the cosmic EBL. The quasi-featureless
 spectra of blazars hinders the 
determination of z and, often, radio/X-ray blazar counterpart associations to close
 pairs of optical ob jects are 
doubtful. We propose an easy and successful filler program (high S/N spectroscopy
 at VLT in SM during bad 
seeing/sky conditions), maximizing scientific results in an exciting twofold way.
 1) using the new z values for 
modelling in the frame of ? -ray space missions like AGILE (flying) and GLAST (launch
 May2008). 2) disentan- 
gling/investigating spectral features of blazars with an intriguing close environment
 (companions, intervening 
or more complex systems). Feasibility and success rate is confirmed by our previous
 runs in P71-P73, P77, P81.

Waiver Requests

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No Waiver Request was submitted
```

Critical Observing Condition Constraints

This programs does not require particular observing conditions, besides
 what is specified in the constraint set of the OBs

Time-Critical Aspects

This program has no time critical aspects.

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 ?

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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 ?

```
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 ?

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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 FORS1 Phase 2 web page ?

Last creation of page: Tue Oct 6 15:40:27 2009
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