comment : Array 1: set pointing -3.8 -6.7
Array 2: set pointing 0.9 -5.3
Array 3: set pointing -4.8 -5.8
Ellipticity (fwhm_x/fwhm_y) A1: 0.90672938
Ellipticity (fwhm_x/fwhm_y) A2: 1.1097335
Ellipticity (fwhm_x/fwhm_y) A3: 0.92979684
we do not change the pointing (note: we can see this secondary calibrator in one scan !)