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Version 1.9 Build 1488

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iramcalibrater.rf - Function

	Package	alma
	Module	alma
	Tool	iramcalibrater

perform phase and amplitude bandpass calibration

Synopsis
rf(fieldname, freqgrp, visnorm, bpnorm, refant, gibb, drop, degamp, degphase)

Description

This function will perform a bandpass calibration on the selected data. The solutions are antenna based polynomials. The desired degree for the amplitude and phase polynomials may be specified in the degamp and degphase parameters. The defaults are usually adequate here, but observations with unusually wide bandwidths might benefit from user input here.

Plots of the solutions are returned to the disk as a postscript file with a name consistent with the ms file name and the bands/sidebands solved for.

Arguments

fieldname		Field name of (single) calibrator to be used
		Allowed:	String
freqgrp		spectral windows to be used in the bandpass calibration
		Allowed:	'3mm-LSB' || '3mm-USB' || '1mm' || '1mm-LSB' || '1mm-USB'
		Default:	'3mm-LSB'
visnorm		Do an auto calibration in time before integrating
		Allowed:	Bool
		Default:	F
bpnorm		normalize bandpass solution
		Allowed:	Bool
		Default:	T
refant		Reference antenna
		Allowed:	Int
		Default:	1
gibb		number of central channels to reject in solve
		Allowed:	Int
		Default:	2
drop		percentage of channels to ignore on edges of band
		Allowed:	Int
		Default:	5
degamp		Degree of amplitude polynomial in fit
		Allowed:	Int
		Default:	6
degphase		Degree of phase polynomial in fit
		Allowed:	Int
		Default:	12

Returns
Bool

Example

myic:=iramcalibrater('10feb97-g067.ms')      
myic.phcor()
myic.rf(fieldname='0528+134', refant=1, freqgrp='3mm-LSB')
myic.done()