File:Leading hemisphere of Helene - 20110618.jpg

原始文件(960 × 900像素,文件大小:186 KB,MIME类型:image/jpeg


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描述
English: This raw, unprocessed image of Saturn's moon Helene was taken by Cassini on 2011年6月18日 and received on Earth 2011年6月20日.

Helene is a trojan moon of Dione. It leads Dione by 60 degrees in their shared orbit. The view looks toward the leading hemisphere of Helene (33 kilometers, 21 miles across). North on Helene is towards the top.

The camera was pointing toward Helene, and the image was taken using the CL1 and CL2 filters. The image has not been validated or calibrated. A validated/calibrated image will be archived with the Planetary Data System in 2012.

The Cassini Solstice Mission is a joint United States and European endeavor. The Jet Propulsion Laboratory (JPL), a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter was designed, developed and assembled at JPL. The imaging team consists of scientists from the US, England, France, and Germany. The imaging operations center and team lead (Dr. C. Porco) are based at the Space Science Institute in Boulder, Colorado.

For more information about the Cassini Solstice Mission visit http://ciclops.org, http://www.nasa.gov/cassini and http://saturn.jpl.nasa.gov.

The original NASA image has been modified by cropping, sharpening and lightening shadows.
日期
来源 https://ciclops.org/view/6796/Helene-Rev-149-Raw-Preview-1.html.
作者 NASA / Jet Propulsion Laboratory / Space Science Institute.
这是一张修改过的图片,这意味着它已在原版本的基础上通过软件进行了编辑,改动内容:cropped and sharpened; shadows lightened。修改者: WolfmanSF。原始版本可以在 这里找到。

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Public domain 本文件完全由NASA创作,在美国属于公有领域。根据NASA的版权方针,NASA的材料除非另有声明否则不受版权保护。(参见Template:PD-USGov/zhNASA版权方针页面JPL图片使用方针。)
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当前2011年6月21日 (二) 09:002011年6月21日 (二) 09:00版本的缩略图960 × 900(186 KB)WolfmanSFRotate 180 deg. to put north on top
2011年6月20日 (一) 18:242011年6月20日 (一) 18:24版本的缩略图960 × 900(212 KB)WolfmanSF

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