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Version 1.9 Build 1556

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imager.setvp - Function

	Package	synthesis
	Module	imager
	Tool	imager

Set the voltage pattern model for subsequent processing

Synopsis
setvp(dovp, usedefaultvp, vptable, dosquint, parangleinc, telescope)

Description
Set the voltage pattern model (and hence, the primary beam) used for a Telecope. There are currently two ways to set the voltage pattern: by using the extensive list of defaults which the system knows about, or by creating a voltage pattern description with the vpmanager. The default voltage patterns include both a high and a low frequency VP for the WSRT, a VP for each observing band at the AT, several VP's for the VLA, including the approrpiate beam squint for each observing band, and Gaussian for the BIMA dishes. Due to temporary limitations in the internal structure of the visibility buffer, only one telescope's voltage pattern can be applied to a particular MeasurementSet. This will be corrected shortly.

Arguments

dovp	in	Do voltage pattern (ie, primary beam) correction
		Allowed:	Bool
		Default:	F
usedefaultvp	in	Look up the default VP for this telescope and frequency?
		Allowed:	Bool
		Default:	T
vptable	in	If usedefaultvp is false, provide a VP Table made with vpmanager
		Allowed:	String
dosquint	in	Activate the beam squint in the VP model
		Allowed:	Bool
		Default:	F
parangleinc	in	Parallactice angle increment for squint application
		Allowed:	Quantity
		Default:	360deg
telescope	in	Which default telescope to use; if empty use the one in encoded in MS
		Allowed:	String
		Default:	''

Returns
Bool

Example

 imgr.setvp(dovp=T, usedefaultvp=T, dosquint=F);