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The two graphs show the relation between altitude and camera resolution. With increasing height above Mars the observed area for the camera increases and the size of a pixel grows - the resolution decreases. This means, the resolution is increasing with decreasing altitude. At an altitude of 280 km the width of a pixel amounts to 11.2 m (HRSC) and at an altitude of 454 km it amounts to 18.1 m. To maintain the quadratic shape of a pixel, the integration time is being adapted. The true anomaly gives the position of the probe at the elliptical orbit. The pericenter is 0° and the apocenter is at 180°. |