Image Analysis with CASA - ESO
Image Analysis with CASA - ESO
Image Analysis with CASA - ESO
- TAGS
- image
- analysis
- casa
- www.eso.org
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in uvplane: uvcontsub<br />
Continuum subtraction<br />
<strong>CASA</strong>> uvcontsub( vis=’ngc5921.ms, # line & cont.ms<br />
field=’N5921’,<br />
spw=’0’,<br />
fitspw=’0:0~10;50~60’ # channels 010 and 5060 used for continuum<br />
solint=’int’, # leave it at the default (see help for details)<br />
fitorder=0) # mean only<br />
This will create a new MS: ngc5921.ms.contsub, to be deconvolved to obtain the continuumsubtracted cube<br />
The main MS (line&cont.ms) can be cleaned <strong>with</strong> mode='mfs' and spw=fitspw to create a continuum image<br />
in image plane: imcontsub<br />
<strong>CASA</strong>> default(’imcontsub’)<br />
imagename = ’ngc5921.image’ # Input image (not already continuum subtracted)<br />
linefile = ’ngc5921.lineimage’ # Output line image<br />
contfile = ’ngc5921.contimage’ # Output continuum image<br />
fitorder = 1 # Polynomial order for continuum estimation<br />
chans = ’0~10,50~60’ # Linefree channels<br />
imcontsub() # Go !<br />
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