Screen capture of the catalog construction software. The LH and RH dynamic spectra for the whole observation of 20/08/2010 are shown. The frequency scale is horizontal (10 to 40 MHz) and the timescale is vertical, increasing upward. This observation lasted for 8 h with a calibration sequence visible every hour. An emission is visible with dominant RH polarization, surrounded by a polygonal contour drawn by hand (with the mouse). The contour was drawn in 4 parts to exclude the calibration sequences of the computed average intensities. The various buttons and tools around the dynamic spectra serve for the interactive display, contour drawing, emission type selection, and recording.
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