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Version 1.9 Build 1556

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newsimulator.setfield - Function

	Package	synthesis
	Module	newsimulator
	Tool	newsimulator

Set one or more observed fields

Synopsis
setfield(sourcename, sourcedirection, calcode, distance)

Description
Set one or more observed fields, including name, coordinates, calibration code. Can be invoked multiple times for a complex observation. Must be invoked at least once before observe.

If the distance to the object is set then the phase term includes a curvature for the near-field effect at the center of the image.

Arguments

sourcename		Name of source or field (must be specified)
		Allowed:	String
		Default:	'unknown'
sourcedirection		Coordinates of source to be observed
		Allowed:	MDirection
calcode		Calibration code
		Allowed:	String
		Default:	''
distance		Distance to the object
		Allowed:	String
		Default:	'0km'

Example

  mysim.setconfig(telescopename='VLA', x=xx, y=yy, z=zz, dishdiameter=diam, 
                mount='alt-az', antname='VLA',
                coordsystem='local', referencelocation=dm.observatory('vla'));

  mysim.setspwindow(spwname='XBAND', freq='8GHz', deltafreq='50MHz',
                   freqresolution='50MHz', nchannels=1, stokes='RR
                   LL');
  dir0 := dm.direction('B1950',  '16h00m0.0', '50d0m0.000')
  mysim.setfield(sourcename='SIMU1', sourcedirection=dir0,
                integrations=1, xmospointings=1, ymospointings=1,
                mosspacing=1.0);
  mysim.observe('SIMU1', 'XBAND', integrationtime='10s', usehourangle=T,
                starttime='0s', stoptime='3600s', 
                referencetime=reftime);