<!-- Written by KANEKO Hiroyuki 2015/10/07--> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <link rel="stylesheet" href="../../styles/default.css" type="text/css"> <link rel="start" href="../../index-e.html"> <link rev="made" href="mailto:nro45mrt@SMEG-OFF-SPAMMERS.nro.nao.ac.jp"> <meta http-equiv="Content-Style-Type" content="text/css"> <title>Pointing Observation with a Continuum Source</title> <link rel="shortcut icon" href="../../images/favicon.ico" type="image/x-icon"> <script type="text/javascript"> (function (i, s, o, g, r, a, m) { i['GoogleAnalyticsObject'] = r; i[r] = i[r] || function () { (i[r].q = i[r].q || []).push(arguments) }, i[r].l = 1 * new Date(); a = s.createElement(o), m = s.getElementsByTagName(o)[0]; a.async = 1; a.src = g; m.parentNode.insertBefore(a, m) })(window, document, 'script', '//www.google-analytics.com/analytics.js', 'ga'); ga('create', 'UA-56944928-1', 'auto'); ga('send', 'pageview'); </script> </head> <body> <!-- BANNER - - - - - - - - - - --> <div id="banner"> <p> <a href="//www.nins.jp/"><img src="../../images/ninslogo.png" alt="NINS&gt; " width="96" height="36"></a> <a href="//www.nao.ac.jp/"><img src="../../images/naojlogo.png" alt="NAOJ&gt; " width="96" height="36"></a> <a href="//www.nro.nao.ac.jp/"><img src="../../images/nrologo.png" alt="NRO&gt; " width="96" height="36"></a> <a href="../../index-e.html"><img id="banner45" src="../../images/banner45.png" alt="45m" width="410" height="48"></a> </p> </div> <!-- CONTENTS - - - - - - - - - - --> <p> Last Update: 8<sup>th</sup> November, 2016 </p> <a name="top"></a> <ul class="check"> <li> <a href="#usage">How to Use the Obstable</a> </li> <li> <a href="#creat">Creating Observing Scripts</a> <ul class="compact"> <li><a href="#source">Source Table</a></li> <li><a href="#scan">Scan Table</a></li> <li><a href="#device">Device Table</a></li> <li><a href="#observe">Observe Table</a></li> </ul> </li> </ul><div class="clcompact"></div> <hr style="background-color: blue;" size="1"> <h1>Pointing Observation with a Continuum Source</h1> <p> If there is no strong SiO maser source near your target or the maser source reachs elevation limit (El &gt; 80 deg. or 12 deg. &lt; El) during allocated observing time, you can do a pointing observation with continuum emitted from quasers. This often happens when your target is apart from the Galactic Plane (~9 hr &lt; LST &lt; ~15 hr), since most of SiO maser sources are the late-type star belonging to Our Galaxy. It will be explained how you can do a pointing observation with a continuum source in the following sections. </p> <h1><a name="usage">How to Use the Obstable</a></h1> <p> For continuum observation, you should make observing scripts not with the nobs but with an Obstable (an older one). </p> <ol> <li>You can not use the Obstable from outside of the observatory like the nobs.</li> <li> Login to ut12x1 (or obstable1) from any machine. <br> <br> <code>> ssh -X (YOUR ACCOUNT ID)@ut12x1.nro.nao.ac.jp</code> <br> or, <br> <code>> ssh -X ut12x1.nro.nao.ac.jp -l (YOUR ACCOUNT ID)</code> </li> <li> After login to ut12x1, type the following command at the prompt. <br> <code>> obs</code> </li> <li> You will see a window like this. Enter your project name (i.e., proj1, proj2, and so on) in the box. You may leave "Observer" blank. <br> <br> <img src="images/obs_old.png" height="300" alt="obstable GUI"> <br> </li> <li> After a successful login, you should have the following window on your screen. <br> <br> <img src="images/obs_main.png" height="400" alt="obstable main GUI"> </li> </ol> <font size="+1"> <a href="#top">Scroll back to the Top</a><br> </font> <h1><a name="create">Creating Observing Scripts</a></h1> <p> The basic framework of Observe Table is as same as the Obstable Z: Source Table, Scan Table and Device Table. Adding to this, naming rule also holds: </p> <ul class="check"> <li> The first letters of file names and source name should be one of alphabetical letters. The subsequent letters should be composed of alphanumeric, plus sign, and minus sign. </li> <li>In the first letters of device file names, however, numerical letters can be used in addition to alphabetical letters.</li> </ul> <p> As long as making observing scripts for pointing with continuum sources, it will be much easier than making other observing scripts. </p> <h2><a name="source">Source Table</a></h2> <p> By clicking the "(RA, DEC) (L, B)" button, you should have a following window. <br> <br> <img src="images/source_old.png" height="450" alt="Source Table GUI"> <br> <br> "Cont List" button provides a list of continuum sources observable from the 45-m telescope. If you intend to perform pointing observation with continuum sources, all you need is just choose the target from the list and save with "Save" button. </p> <font size="+1"> <a href="#top">Scroll back to the Top</a><br> </font> <h2><a name="scan">Scan Table</a></h2> <p> With the "Scan : Cont" window accessible from pushing the "Cont" button in the Scan Table row, you can make the Scan Table for continuum observation. Two sample files are already prepared for pointing observation with continuum sources: point2 and point4. The difference of the two is the length of the cross scan: point2 is 2 arcminutes while point4 is 4 arcminutes. In general, point2 suits for the aim. Choose "point2" from "Sample List" and save with "Save" button. <br> <br> <img src="images/scan_old.png" height="400" alt="Scan Table GUI"> <br> </p> <font size="+1"> <a href="#top">Scroll back to the Top</a><br> </font> <h2><a name="device">Device Table</a></h2> <p> Like other tables, Device Table can easily made with "Device : Cont" window which can be used by clicking the "Cont" button in the Device Table row. <br> <br> <img src="images/device_old_main.png" height="500" alt="Device Table GUI"> </p> <font size="+2" class="warning"> If you ignore this instruction, OPERATIONS OF THE 45-M TELESCOPE (not only your observations!!) might be stopped. </font> <p> Beam switching system has a trouble. In order to avoid the trouble, please modify the sample file. Push the "beam switch" button at the bottom of the Device Table window, you will find a new window. Rotation speed is the one to modify. Change the value from the default (465 rpm) to 300 rpm and then, save the Device Table. With this procedure, you will be able to perform pointing observation without a critical trouble. <br> <img src="images/device_old_bsw.png" height="200" alt="Beam Switch"> <br> </p> <font size="+1"> <a href="#top">Scroll back to the Top</a><br> </font> <h2><a name="observe">Observe Table</a></h2> <p> The last procedure is to make Observe Table and generate the observing scripts. Go back to the main window and fill the text boxes with the name of Source Table, Scan Table and Device Table which you have made and name the observe table within seven charactors. And then, push the "Save &amp; Send" button to send it to COSMOS. <br> <br> <img src="images/obs_main.png" height="400" alt="obstable main GUI"> </p> <font size="+1"> <a href="#top">Scroll back to the Top</a><br> </font> <!-- FOOTER - - - - - - - - - - --> <hr> <address> </address> <!-- NAVIGATION - - - - - - - - - - --> <p class="navigation"> <a href="//www.nins.jp/">NINS</a> &gt; <a href="//www.nao.ac.jp/">NAOJ</a> &gt; <a href="//www.nro.nao.ac.jp/">NRO</a> &gt; <a href="../../index-e.html">45m</a> &gt; <a href="index.html">nobs</a> &gt; Pointing Observation with a Continuum Source </p> </body> </html>