File:PIA18313 Saturn's D ring and inner C ring.jpg
原始檔案 (2,040 × 1,640 像素,檔案大小:826 KB,MIME 類型:image/jpeg)
說明
摘要[編輯]
描述PIA18313 Saturn's D ring and inner C ring.jpg |
English: Not all of Saturn's rings are created equal: here the C and D rings appear side-by-side, but the C ring, which occupies the bottom half of this image, clearly outshines its neighbor.
The D ring appears fainter than the C ring because it is comprised of less material. However, even rings as thin as the D ring can pose hazards to spacecraft. Given the high speeds at which Cassini travels, impacts with particles just fractions of a millimeter in size have the potential to damage key spacecraft components and instruments. Nonetheless, near the end of Cassini's mission, navigators plan to thread the spacecraft's orbit through the narrow region between the D ring and the top of Saturn's atmosphere. This view looks toward the unilluminated side of the rings from about 12 degrees below the ringplane. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Feb. 11, 2015. The view was acquired at a distance of approximately 372,000 miles (599,000 kilometers) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 133 degrees. Image scale is 2.2 miles (3.6 kilometers) per pixel. The Cassini Solstice Mission is a joint United States and European endeavor. The Jet Propulsion Laboratory, 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, Colo. 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 doubling the linear pixel density, cropping and converting from TIFF to JPG format. |
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來源 | http://www.ciclops.org/view/8008/Faint-D-Ring or http://photojournal.jpl.nasa.gov/catalog/PIA18313 |
作者 | NASA / JPL-Caltech / Space Science Institute |
其他版本 |
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授權條款[編輯]
Public domainPublic domainfalsefalse |
本作品由NASA創作,屬於公有領域。根據NASA的版權政策:“NASA的創作除非另有聲明否則不受版權保護。”(參見:Template:PD-USGov/zh,NASA版權政策或JPL圖像使用政策) | ||
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日期/時間 | 縮圖 | 尺寸 | 使用者 | 備註 | |
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目前 | 2015年4月30日 (四) 07:37 | 2,040 × 1,640(826 KB) | WolfmanSF(留言 | 貢獻) | User created page with UploadWizard |
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此檔案中包含其他資訊,這些資訊可能是由數位相機或掃描器在建立或數位化過程中所新增的。若檔案自原始狀態已被修改,一些詳細資料可能無法完整反映出已修改的檔案。
影像標題 | IDL TIFF file |
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寬度 | 1,020 px |
高度 | 1,020 px |
壓縮方式 | LZW |
像素合成 | 黑白(黑為 0) |
方位 | 標準 |
像素數量 | 1 |
水平解析度 | 100 dpi |
垂直解析度 | 100 dpi |
資料排列 | 矮胖格式 |
使用軟體 | Adobe Photoshop Elements 12.0 Macintosh |
檔案修改日期時間 | 2015年4月30日 (四) 00:11 |
色彩空間 | 顏色未校準 |
詮釋資料最後修改日期 | 2015年4月29日 (三) 17:11 |
數位化的日期時間 | 2015年4月29日 (三) 17:10 |
原始文件唯一識別碼 | xmp.did:01801174072068118DBBB350562015F5 |
IIM 版本 | 24,704 |