Fig. 1From: Performance of Akatsuki/IR2 in Venus orbit: the first yearLocation and orientation of IR2 on the spacecraft body. Although direct solar illumination of the spacecraft −Y panel is carefully avoided, the IR2 compressor and cold head, slightly elevated from the panel surface, are subject to sunlight. This reduces the efficiency of the cooling performance when the sunlight is incident from the −X- or −Z-direction in the XZ planeBack to article page