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deconvolver.clipimage - Function

3.1.2 Zero all pixels where Stokes I is below a threshold


Description

All pixels in the image with Stokes I less than some threshold are set to zero. This is useful prior to self-calibration where one oftens wishes to remove negative pixels from the model. Note that if the image has polarization information, then the polarized part of a pixel is also set to zero if Stokes I is less than the threshold.

Arguments

Inputs

clippedimage

name of clipped image

allowed:

string

Default:

inputimage

name of input image

allowed:

string

Default:

threshold

Threshold

allowed:

any

Default:

variant 0.0Jy

Returns
bool

Example

 
 
dc.clipimage(image=’clean’, threshold=’50mJy’)  
###the ft that model into an MS and do gaincal for e.g  
 

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