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NRAO Home > CASA > CASA Toolkit Reference Manual |
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linearmosaic.setoutputimage - Function
3.1.3 Use this function to mosaic on an existing image and weight image
Description
Use this function if the mosaicing is to be done onto a previous mosaic or
image. For now the stokes and spectral characteristic of the images to be
mosaic and the output image has to be similar (i.e the user has to regrid them
prior to linearmosaic if necessary). The weightimage represents the sensitivity
image of the image (for example the weighted primary beam coverage of a
mosaic)
imageweighttype parameter:
If the image is of the type that has been normalized to be flux correct then the imageweighttype should 0. If the image has been apodized by a primary beam then imageweighttype should be 1 and if the image is multiplied by PB2 then it should be 2.
weighttype parameter: This should be 1 if the weight image is the sum of Primary beams or equivalent and it should be 2 if it is the sum of of PB2
Arguments
Inputs |
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outputimage |
| Existing mosaic imagename
| |
| allowed: | string |
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| Default: |
| |
outputweight |
| Existing weight image for mosaic
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| allowed: | string |
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| Default: |
| |
imageweighttype |
| what kind of weight was already applied to image 0:
flux correct 1: Primary beam equivalent weight 2: PB2
equivalent weight
| |
| allowed: | int |
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| Default: | 1 |
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weighttype |
| what kind of weight is weight image 1: Primary beam
equivalent weight 2: PB2 equivalent
| |
| allowed: | int |
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| Default: | 1 |
|
bool
Example
lm.setoutputimage(outputimage=’testoo.linmos’, outputweight=’testoo.linmos.weight’, imageweightype=0, weighttype=2)
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