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维基百科，自由的百科全书

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Pandora and Prometheus Near F Ring

Two of Saturn's moons Prometheus (102 kilometers, or 63 miles across) and Pandora (84 kilometers, or 52 miles across), are seen here shepherding the planet's narrow F-ring. Prometheus overtakes Pandora in orbit around Saturn about every 25 days. Slightly above the pair and to the right is another moon, Epimetheus (116 kilometers, or 72 miles across). The image was taken with the narrow angle camera on the Cassini spacecraft on May 1, 2004, at a distance of 31.4 million kilometers (19.5 million miles) from Saturn. Image scale is 187 kilometers (116 miles) per pixel. The image has been magnified and greatly contrast-enhanced to aid visibility.

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.

For more information about the Cassini-Huygens mission, visit http://saturn.jpl.nasa.gov and the Cassini imaging team home page, http://ciclops.org.

土卫十七和土卫十六在F环附近

这里可以看到牧羊行星的F环的土星的两颗卫星土卫十六(大小102千米或63英里)和土卫十七(大小84千米或52英里)。土卫十六在土卫十七上面，大约每25天环绕土星一圈。这两颗卫星稍微上面一些是另一颗卫星，土卫十一(大小116千米或72英里)。这张图片是卡西尼号飞船窄角照相机于2004年05月01日在距离土星3140万千米(1950万英里)处拍摄的。图片比例是187千米(116英里)每像素。为了提高能见度，这张图片已经被放大，并且被显著增强了对比度。

卡西尼—惠更斯号任务是美国国家航空航天局、欧洲航天局和意大利航天局的一个合作项目。喷气推进实验室作为位于帕萨迪那的加州理工学院的一个机构，负责为位于华盛顿特区的美国国家航空航天局空间科学办公室管理卡西尼—惠更斯号任务。卡西尼号轨道器及其携带的两台照相机是在喷气推进实验室设计、开发和组装的。成像小组位于科罗拉多州圆石城的空间科学学会。

更多关于卡西尼—惠更斯号任务的信息，请访问[[1]]和卡西尼号成像小组主页[[2]]。