FIG. 3a
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FIG. 3b
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FIG. 3 Neptune was observed on the night of 1999 May 24 in several wavelength bands. (a) A 9 minute AO-corrected exposure in the methane absorption band (1.17 um). (b) Uncorrected image in 400 mas seeing shown for comparison. Neptune is 2.3" in diameter. A very powerful storm in the upper atmosphere, at center right, was observed to rotate from right to left.

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