IRAS16293 Band9 - Calibration for CASA 3.3

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  • This portion of the guide covers calibration of the raw visibility data. To skip to the imaging portion of the guide, see: IRAS16293_Band9_-_Imaging.

Overview

overview..

The general procedure in this guide follows the other ALMA CASA guides: NGC3256Band3 and TWHydraBand7.

Unpack the Data

Once you have downloaded the IRAS16293_Band9_UnCalibratedMSandTablesForReduction.tgz, unpack the file in a terminal outside CASA using 

tar -xvzf IRAS16293_Band9_UnCalibratedMSandTablesForReduction.tgz

then change directory to the new directory 

cd IRAS16293_Band9_UnCalibratedMSandTablesForReduction

You may wish to type 

ls

to look at the files present. You should see a set of files with extension ".ms". These are CASA measurement set (MS) files. The data have already been converted to MS format from the native ALMA format (ASDM) using the CASA task importasdm. In addition to the data, we provide you with calibration tables containing system temperature (Tsys), water vapor radiometer (WVR), and antenna position information. For Early Science, these tables will either be pre-applied or supplied with the data.

To begin, start CASA by typing 

casapy

Be sure that you are using the version indicated at the top of this page.

Initial Inspection

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