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Voyager 2 narrow-angle camera
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South up image
Original 795kB tif
During August 16 and 17, 1989, the Voyager 2 narrow-angle camera was used to photograph Neptune
almost continuously, recording approximately two and one-half rotations of the planet.
These images represent the most complete set of full disk Neptune images that the spacecraft will
acquire. This picture from the sequence shows two of the four cloud features which have been
tracked by the Voyager cameras during the past two months.
The large dark oval near the western limb (the left edge) is at a latitude of 22 degrees south
and circuits Neptune every 18.3 hours.
The bright clouds immediately to the south and east of this oval are seen to substantially change
their appearances in periods as short as four hours. The second dark spot, at 54 degrees south
latitude near the terminator (lower right edge), circuits Neptune every 16.1 hours.
This image has been processed to enhance the visibility of small features, at some sacrifice
of color fidelity. The Voyager Mission is conducted by JPL for NASA's Office of Space Science and
Applications.
Japanese
1989/08/16〜17 にかけて狭角カメラで海王星の2.5回転をほとんど切れ目なく撮影されました。
この画像はそのうちで全容を映し出された完全な画像です。
2ヶ月にわたり追跡された特徴的な4つの雲のうちの2個が映し出されています。
右側の大きな黒斑点は南緯２２゜にあり、18.3時間毎に海王星の自転と共に回っています。
すぐ上(南)の楕円の東の明るい雲は4時間ほどで形状が変化しています。
左上の端にある小暗班は南緯５４゜にあり、16.1時間で自転しています。
カラー再現は少し犠牲となったがこれらの特徴的模様が見やすくなるよう画像は強調処理をしてあります。
[NASA/JPL/Space Science Institute]
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