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Using Pointings and Cross-correlations

A new option in the command SOLVE FLUX has been implemented which allows flux densities calculations using either POINTINGS and/or CROSS-CORRELATIONS. This is the command:

        CLIC\SOLVE FLUX /OUTPUT file NEW[OLD]
This command, applied on the CROSS-CORRELATIONS, generates an output file which can directly be read by he language FLUX in ASTRO. It treats the CROSS-CORRELATIONS like POINTINGS assuming that positionnal errors are ``zero''. The scenario is quite similar to the case above:

        CLIC\SET RF ON FREQ
        CLIC\SET PHASE RELATIVE
        CLIC\SET BAND DSB
        CLIC\SET SUB L01 TO L06
        CLIC\SET SOURCE Phase_Calib RF_CAlib
        CLIC\SET PROC CORR
        CLIC\SET FLUX RF_Calib xx.x     !see flux reports
        CLIC\FIND /SCAN x y     !After a pointing on RF_Calib
        CLIC\FIND APPEND /SCAN v w      !After a pointing on Phase_Calib
        CLIC\SOLVE FLUX/OUTPUT flux.fit NEW

When the flux density of the amplitude calibrator is known, update the CLIC calibration procedure (described in the ``Calibration Cookbook'') as follows:

        CLIC\SET SOURCE Phase_Calib RF_CAlib
        CLIC\SET PROC POINT CORR
        CLIC\SET FLUX Phase_Calib xx.x
        CLIC\SET FLUX RF_Calib yy.y
        CLIC\FIND 
        CLIC\STORE FLUX (On all cross-correlations)

Now you can proceed to the standard Amplitude Calibration using cross-correlations on the Amplitude Calibrator (see ``Calibration Cookbook'').



Gildas manager 2018-12-15