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      <h1>NaCo</h1>
      <h2>NAOS - Nasmyth Adaptive Optics System<br>
        CONICA - Near-Infrared Imager and Spectrograph</h2>

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<h2>Summary</h2> 

NaCo sets out for NAOS-CONICA. It is installed at the Nasmyth B focus of UT4.
It provides adaptive optics assisted
imaging, imaging polarimetry, coronography and spectroscopy, in the 1-5 microns range.
<!-- It also includes a Fabry-Perot unit in the 2-2.5 microns range.-->
<br>
The adaptive optics system, NAOS, is equipped with both visible and infrared
wavefront sensors. It contains 5 dichroics which split the
light from the telescope between CONICA and one of the NAOS wavefront sensors. 
<br>
CONICA is the infrared camera and spectrometer attached to NAOS and is
equipped with an Aladdin 1024x1024 pixel InSb array detector.
<!--- sensitive from 1 to 5 microns.--->
It  contains several wheels carrying masks/slits (including focal plane
coronographic masks),  filters, polarizing elements, grisms and several
cameras allowing diffraction limited sampling across the full wavelength
range. CONICA is not intented to be operated without NAOS.

<p>
Publications based on data obtained with the NACO instrument should quote 
the following reference papers: 
<a href="http://esoads.eso.org/cgi-bin/nph-bib_query?bibcode=2003SPIE.4841..944L"> Lenzen, R. et al. 2003, SPIE 4841, 944</a> and <a href="http://esoads.eso.org/cgi-bin/nph-bib_query?bibcode=2003SPIE.4839..140R"> Rousset, G. et al. 2003, SPIE 4839, 140</a>.

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<h2>Contact Information</h2>
<ul>
<li> Questions related to service mode observations and proposal preparation
     should be addressed to the <a href="mailto:usd-help@eso.org"> User 
     Support Department.</a>
</li><li> Questions related to visitor mode observations should be addressed
     to 
     <a href="mailto:paranal@eso.org?subject=my%20visitor%20mode%20observation%20run"> 
     Paranal Science Operations</a> 
<li> Questions related to NaCo should be addressed to the <a href="mailto:naco@eso.org?subject=NACO question"> NaCo account</a>
<li> Please <a href="mailto:naco@eso.org?subject=NACO documentation">send us</a> 
     your comments, suggestions and report errors and inaccurate statements in the web 
     pages and manuals. 
</li></ul>


<hr>
<h2>Content of these pages</h2>
The following items are available on all the NaCo pages, using the bar on the left.
<ul>
<li>Internal links, specific to NaCo 
<ul>
   <li>Home: returns to this page.
   </li><li>Overview: a short description of the instrument
   </li><li>Instrument: all the important parameters of the instrument.
   </li><li>Manuals: links to all the documents related to NaCo.
   </li><li>Tools: a collection of useful tools and informations for preparing and analyzing the NaCo observations.
   </li><li>News: list of changes affecting the instrument and/or its
   pages.
   </li><li>IOT: informations on the Instrument Operation Team
   </li><li>Visitor: Instrument specific instructions for Visiting Astronomers
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</li></ul>
</li><li>Generic pages, outside Paranal's web
<ul>
   <li>Service: link to the instructions for Phase II and Service Mode
   </li><li>Proposals: link to the Proposal instructions
   </li><li>ETC: link to the Exposure Time Calculators and Instrument
   Simulators
   </li><li>Pipeline: link to the Pipeline and Quality Control pages.
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</li></ul>

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