WorkshopSelfcal: Difference between revisions
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You will use the now-familiar NGC 3256 Band 3 or TW Hydra Band 7 Science Verification data. You have seen these already this morning. Both contain several lines, including CO emission, and continuum emission. We will begin by imaging the continuum emission and using that to self calibrate. We will then see how to apply that self-calibration to improve the line images. | You will use the now-familiar NGC 3256 Band 3 or TW Hydra Band 7 Science Verification data. You have seen these already this morning. Both contain several lines, including CO emission, and continuum emission. We will begin by imaging the continuum emission and using that to self calibrate. We will then see how to apply that self-calibration to improve the line images. | ||
Note that it is perfectly possible to self-calibrate the other TW Hydra data or the Antennae Band 7 data (see [[AntennaeBand7]]). If you finish quickly, try to write | Note that it is perfectly possible to self-calibrate the other TW Hydra data or the Antennae Band 7 data (see [[AntennaeBand7]]). If you finish quickly, you might try to write your own script to do this. | ||
=== Recommended Approach === | === Recommended Approach === | ||
Revision as of 19:39, 28 November 2011
This page describes the hands-on self calibration portion of the ALMA data reduction workshop. In this session you will carry out self-calibration on ALMA Science Verification data to improve the image quality. This page describes the data and introduces the scripts. It is not a full-fledged CASA guide, only background for the hands on portion of the workshop. For the imaging session in the morning go here: WorkshopImaging
Overview
Data Description
You will use the now-familiar NGC 3256 Band 3 or TW Hydra Band 7 Science Verification data. You have seen these already this morning. Both contain several lines, including CO emission, and continuum emission. We will begin by imaging the continuum emission and using that to self calibrate. We will then see how to apply that self-calibration to improve the line images.
Note that it is perfectly possible to self-calibrate the other TW Hydra data or the Antennae Band 7 data (see AntennaeBand7). If you finish quickly, you might try to write your own script to do this.
Recommended Approach
Continuum Self Calibration
Continuum-to-Line Self Calibration
Self-calibration can also be used to improve your spectral line imaging.
