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Earth, Planets and Space
Fig. 10 | Earth, Planets and Space

Fig. 10

From: Performance of Akatsuki/IR2 in Venus orbit: the first year

Fig. 10

Theoretical focal lengths of IR2 triplet optics (open circles) for the four Venus filters (1.735, 2.02, 2.26, and 2.32 μm) at two different temperatures (293 and 170 K). Curves (quadratic functions) were obtained by a least-squares fit to the points, and the coefficients are shown in the figure

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