A brief Tutorial of the CLASS Data Reduction Program

A brief Tutorial of the CLASS Data Reduction Program While running a Spectral-line observing session (especially a longer session involving mapping or many observations), it might be desirable to conduct some data reduction on the spectra that is being produced during the observing run. This tutorial is a brief overview of the CLASS (Continuum and Spectral-Line Analysis Software, from IRAM/Grenoble) While a much more extensive manual can be found at the IRAM website http://www.iram.fr/IRAMFR/GILDAS/We have attempted to provide a quick guide that will be useful to most first-time users of Haystack and a handy guide to those who need a quick refresher. This guide is adapted from a tutorial developed for the Haystack Chautauqua Class “Radio Astronomy in the Undergraduate Classroom” and is written as if the user is involved in an active observing session Getting Started 1. In one of the unused computer environment windows, open two xterm windows to begin the data reduction portion of the NGC7538 ammonia observations. Position the xterm windows side by side at the top of your screen. In the lower right corner of the LINUX control console there is a gray-colored 2 x 2 box. The upper left box will show a depiction of the layout of your current work area. To select a new work area click on one of the five remaining boxes to open a blank screen (new work area) and then click on the xterm button on the toolbar twice. 2. To create a file ...