EVLA 6cmWideband Tutorial SN2010FZ

Overview

This article describes the calibration and imaging of a single-pointing 6cm EVLA wideband continuum dataset on the galaxy NGC2967 (UGC5180) which was the location of the supernova candidate SN2010FZ. No supernova was detected in this observation, but the galactic continuum emission from this face-on spiral is adequately imaged. The data were taken in RSRO mode, with 1024 MHz of bandwidth in each of two widely spaced basebands (comprised each of 8 128 MHz spectral windows), spanning 4.5 to 7.5 GHz. We will use wideband imaging techniques in this tutorial.

This is a more advanced tutorial, and if you are a relative novice (and particularly for EVLA continuum calibration and imaging), it is strongly recommended that you start with the EVLA Continuum Tutorial 3C391 before tackling this dataset. We will not include basic information on CASA processing in this tutorial.

Obtaining the Data

For the purposes of this tutorial, we have provided the raw SDM data (as would be extracted from the archive) as well as measurement sets created by filling the data (with the importevla task) and upon time-averaging to 10s (after application of the online flags).

To start your tutorial, depending on which dataset you start with, proceed to:

• To start with the raw SDM data: Start with the section below titled "Importing your EVLA data from SDM". This is where you would start if you were reducing data from the archive.
• To start with the raw filled MS: Start with the section below titled "Application of Online Flags and averaging your MS".
• To start with the flagged and averaged MS: Start with the section below titled "Examining and Flagging your averaged MS".