<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0185-1101</journal-id>
<journal-title><![CDATA[Revista mexicana de astronomía y astrofísica]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. astron. astrofis]]></abbrev-journal-title>
<issn>0185-1101</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Astronomía]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0185-11012014000100010</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Investigation of the 0.84-M telescope guiding at the OAN-SPM]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Orlov]]></surname>
<given-names><![CDATA[V. G.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hiriart]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Voitsekhovich]]></surname>
<given-names><![CDATA[V. V.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Astronomía ]]></institution>
<addr-line><![CDATA[México D.F.]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Astronomía ]]></institution>
<addr-line><![CDATA[Ensenada B.C.]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2014</year>
</pub-date>
<volume>50</volume>
<numero>1</numero>
<fpage>87</fpage>
<lpage>92</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-11012014000100010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-11012014000100010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-11012014000100010&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Reportamos los resultados de una investigación experimental sobre el guiado del telescopio de 0.84-m en el Observatorio Nacional Sierra de San Pedro Mártir, México. Se realizaron observaciones con una cámara EMCCD Andor Luca-S, que permite registrar conjuntos de imágenes de corta exposición. El análisis de los datos muestra que existen tres tipos de errores en el guiado: una tendencia lineal, vibraciones del telescopio, y brincos abruptos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[We report the results of experimental investigations of the 0.84-m telescope guiding at the Observatorio Astronómico Nacional at Sierra San Pedro Mártir, Mexico. The observations were carried out with an EMCCD Andor Luca-S camera which allows one to record sets of short-exposure images. The analysis of the data shows that three types of telescope guiding errors are present: linear trend, telescope vibrations, and telescope jumps.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[instrumentation]]></kwd>
<kwd lng="en"><![CDATA[techniques]]></kwd>
<kwd lng="en"><![CDATA[telescopes]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  	    <p align="center"><font face="verdana" size="4"><b>Investigation of the 0.84&#45;M telescope guiding at the OAN&#45;SPM</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="2">&nbsp;<b>V. G. Orlov,<sup>1</sup> D. Hiriart,<sup>2</sup> and V. V. Voitsekhovich<sup>1</sup></b></font></p>  	    <p align="center"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><sup><i>1</i></sup> <i>Instituto de Astronom&iacute;a, Universidad Nacional Aut&oacute;noma de M&eacute;xico, Apdo. Postal 70&#45;264, C.P. 04510, M&eacute;xico D.F., Mexico.</i> (<a href="mailto:orlov@astro.unam.mx">orlov@astro.unam.mx</a>, <a href="mailto:voisteko@astro.unam.mx">voisteko@astro.unam.mx</a>)</font></p>  	    <p align="justify"><font face="verdana" size="2"><sup><i>2</i></sup> <i>Instituto de Astronom&iacute;a, Universidad Nacional Aut&oacute;noma de M&eacute;xico, Apdo. Postal 870, 2800 Ensenada, B.C., Mexico.</i> (<a href="mailto:hiriart@astrosen.unam.mx">hiriart@astrosen.unam.mx</a>).</font></p>  	    <p align="center"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2">Received 2013 June 24.    <br> 	Accepted 2013 December 17.</font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>RESUMEN</b></font></p>  	    <p align="justify"><font face="verdana" size="2">Reportamos los resultados de una investigaci&oacute;n experimental sobre el guiado del telescopio de 0.84&#45;m en el Observatorio Nacional Sierra de San Pedro M&aacute;rtir, M&eacute;xico. Se realizaron observaciones con una c&aacute;mara EMCCD Andor Luca&#45;S, que permite registrar conjuntos de im&aacute;genes de corta exposici&oacute;n. El an&aacute;lisis de los datos muestra que existen tres tipos de errores en el guiado: una tendencia lineal, vibraciones del telescopio, y brincos abruptos.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>ABSTRACT</b></font></p>  	    <p align="justify"><font face="verdana" size="2">We report the results of experimental investigations of the 0.84&#45;m telescope guiding at the Observatorio Astron&oacute;mico Nacional at Sierra San Pedro M&aacute;rtir, Mexico. The observations were carried out with an EMCCD Andor Luca&#45;S camera which allows one to record sets of short&#45;exposure images. The analysis of the data shows that three types of telescope guiding errors are present: linear trend, telescope vibrations, and telescope jumps.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Key Words:</b> instrumentation: high angular resolution &#151; techniques: image processing &#151; telescopes.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><a href="/pdf/rmaa/v50n1/v50n1a10.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>ACKNOWLEDGMENTS</b></font></p>  	    <p align="justify"><font face="verdana" size="2">We acknowledge the support from DGAPA PAPIIT&#45;Universidad Nacional Aut&oacute;noma de M&eacute;xico, grants IN104910 and IN112710.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>REFERENCES</b></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">Altarac, S., Berlioz&#45;Arthaud, P., Thi&eacute;baut, E., Foy, R., Balega, Y. Y., Dainty, J. C., &amp; Fuensalida, J. J. 2001, MNRAS, 322, 141</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=7468015&pid=S0185-1101201400010001000001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">Echevarr&iacute;a, J., et al. 1998, RevMexAA, 34, 47</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=7468016&pid=S0185-1101201400010001000002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">Michel, R., Echevarr&iacute;a, J., Costero, R., Harris, O., Magall&oacute;n, J., &amp; Escalante, K. 2003, RevMexAA, 39, 291</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=7468017&pid=S0185-1101201400010001000003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">Sch&ouml;ck, M., et al. 2009, PASP, 121, 384</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=7468018&pid=S0185-1101201400010001000004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">Tapia, M. 2003, RexMexAA (SC), 19, 75</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=7468019&pid=S0185-1101201400010001000005&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">Tokovinin, A., &amp; Cantarutti, R. 2008, PASP, 120, 170</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=7468020&pid=S0185-1101201400010001000006&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">Valdez, J., et al. 1997, Comisi&oacute;n T&eacute;cnica Observatorio 97&#45;1, Instituto de Astronom&iacute;a, Universidad Nacional Aut&oacute;noma de M&eacute;xico, Mexico</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=7468021&pid=S0185-1101201400010001000007&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">Voitsekhovich, V. V., Orlov, V. G., S&aacute;nchez, L. J., &amp; Garfias, F. 2007, RevMexAA, 43, 309</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=7468022&pid=S0185-1101201400010001000008&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">Zazueta, S. 1995, Reporte T&eacute;cnico RT 95&#45;04, Instituto de Astronom&iacute;a, Universidad Nacional Aut&oacute;noma de M&eacute;xico, Mexico</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=7468023&pid=S0185-1101201400010001000009&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --> ]]></body><back>
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