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NRAO Home > CASA > CASA Toolkit Reference Manual |
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imager.make - Function
2.3.1 Make an empty (i.e. blank) image
Description
Make an empty image using the current image parameters. Often this is
unnecessary, but you will typically need to use this if you wish to deconvolve a
set of images. The steps are to make the empty images that you require to be
deconvolved, and then pass them into clean as a vector of strings.
Arguments
Inputs |
| ||
image |
| name of output image
| |
| allowed: | string |
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| Default: |
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async |
| Run asynchronously in the background
| |
| allowed: | bool |
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| Default: | false |
|
bool
Example
im.defineimage(nx=1024,ny=1024, cellx=’30marcsec’,celly=’30marcsec’,
nchan=1, stokes=’IV’, phasecenter=me.direction(’mars’));
im.make(’mars.moving’);
im.defineimage(nx=1024,ny=1024, cellx=’30marcsec’,celly=’30marcsec’,
nchan=1, stokes=’IV’,
phasecenter=me.direction(’J2000’, ’12:23:48.7’, ’-15:56:32.9’)
im.make(’mars.fixed’);
im.clean(algorithm=’mf’, model=[’mars.moving’, ’mars.fixed’],
image=[’mars.moving.restored’, ’mars.fixed.restored’])
This makes two empty images, one moving with mars and one fixed
in J2000, and then deconvolves the two jointly using clean.
Finally the images are restored.
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