파일:Iapetus by Saturnlight.jpg

Iapetus_by_Saturnlight.jpg(400 × 400 픽셀, 파일 크기: 35 KB, MIME 종류: image/jpeg)

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PIA06146
Target Name: Iapetus
Is a satellite of: Saturn
Mission: Cassini Orbiter
Spacecraft: Cassini Orbiter
Instrument: Imaging Science Subsystem - Narrow Angle
Product Size: 400 samples x 400 lines
Produced By: CICLOPS/Space Science Institute
Primary Data Set: Cassini
Full-Res TIFF: PIA06146.tif (156.9 KB)
Full-Res JPEG: PIA06146.jpg (22.82 KB)

Seeing in the Dark
New details on Iapetus are illuminated by reflected light from Saturn in this revealing Cassini image. Never-before-seen features on the Saturn-facing part of Iapetus' bright trailing hemisphere are visible for the first time, including many dark spots, and a sharper view of a dark, circular structure that was first seen at very low resolution by NASA's Voyager 1 in 1980. Iapetus diameter is 1,436 kilometers (892 miles).

The image shows mainly the night side of Iapetus; part of the far brighter sunlit side appears at the right and is overexposed due to the long integration time of 180 seconds. Despite this long exposure time, almost no blurring due to the spacecraft's motion is apparent. This technique for imaging the night side of Iapetus will be used again during a flyby on Jan. 1, 2005, when Cassini will pass 13 times closer to the icy moon.

The image was taken in visible light with the Cassini spacecraft narrow angle camera on Oct. 22, 2004, at a distance of 1.6 million kilometers (994,000 miles) from Iapetus, and from a Sun-Iapetus-spacecraft, or phase, angle of 161 degrees. The view is centered on 0.4 degrees north latitude, 317 degrees west longitude on Iapetus. The image scale is 9.4 kilometers (5.8 miles) per pixel.

The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Cassini-Huygens mission for NASA's Office of Space Science, Washington, D.C. The Cassini orbiter and its two onboard cameras, were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo.


Source: http://photojournal.jpl.nasa.gov/catalog/PIA06146 (direct link)

This image or video was catalogued by Jet Propulsion Laboratory of the United States National Aeronautics and Space Administration (NASA) under Photo ID: PIA06146.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.
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Public domain 이 파일은 NASA에서 제작하였으므로 퍼블릭 도메인입니다. NASA의 저작권 정책에 따르면 NASA의 자료는 명시하지 않는 이상 저작권의 보호를 받지 않습니다. (Template:PD-USGov, 또는 NASA 저작권 정책 문서, JPL 그림 사용 정책을 참고하세요.)
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현재2015년 12월 19일 (토) 12:042015년 12월 19일 (토) 12:04 판의 섬네일400 × 400 (35 KB)PlanetUserconverted from TIFF
2005년 4월 5일 (화) 03:202005년 4월 5일 (화) 03:20 판의 섬네일400 × 400 (22 KB)Smartech~commonswikiIapetus, a moon of Saturn, with its dark side illuminated by reflected light from Saturn {{PD-USGov-NASA}} '''Original caption released with image:''' New details on Iapetus are illuminated by reflected light fro

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