Spectral information in CASA - ESO
Spectral information in CASA - ESO
Spectral information in CASA - ESO
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<strong>Spectral</strong> Transformation <strong>in</strong> cvel and clean<br />
You can play with the gridd<strong>in</strong>g/transformation parameters without chang<strong>in</strong>g<br />
any data <strong>in</strong> the MS by us<strong>in</strong>g the cvelfreqs method of the ms tool:<br />
ms.open('myvis.ms')<br />
# open some MS<br />
ms.cvelfreqs(spwids=[0], mode='frequency', width='15kHz', outframe='LSRK')<br />
Out[..]: array([ 102506.09397883, 117506.09397883, 132506.09397883])<br />
etc.<br />
ms.close()<br />
will return the array of CHAN_FREQ values <strong>in</strong> the output grid<br />
but not modify any data.<br />
D. Petry, <strong>Spectral</strong> <strong><strong>in</strong>formation</strong> <strong>in</strong> <strong>CASA</strong>, February 2013<br />
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