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NRAO Home > CASA > CASA Toolkit Reference Manual |
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linearmosaic.saultweightimage - Function
3.1.3 Use this function to create a Sault-weighted image
Description
”Sault weighted” image is one which is more pleasant to view (without high
noise at the edges of mosaic images), it is flux correct upto a where the beam
coverage becomes low and is tapered off onwards just to keep the noise from
rising in the overall image(see Eq[2] from Sault, Staveley-Smith and Brouw
(1996), Astron. Astrophys. Suppl, 120, 375)
Arguments
Inputs |
| ||
outputimage |
| Name of image to create the Sault-Weighted image
| |
| allowed: | string |
|
| Default: |
|
|
fracpeak |
| Upto what fraction of peak of coverage should the image
be flux correct
| |
| allowed: | double |
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| Default: | 0.1 |
|
bool
Example
lm.defineoutputimage(nx=3000, cellx=’3arcsec’, imagecenter=’19h13m13.469 4d50m09.649’, outputimage=’test.linmos’)
lm.makemosaic(images=[’FIELD_31/img.image’, ’FIELD_33/img.image’], weightimages=[’FIELD_31/img.pb’, ’FIELD_33/img.pb’])
###the above will make a flux correct mosaic of the 2 images in a flux correct fashion in test.linmos
#Now make a Sault weighted image to use in the viewer
lm.saultweightimage(’test_sault.linmos’)
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