|
在天之文看到 Shea 发的这张酷图,很有意思!大家以前从来没有看到过从南极方向看木星是个什么样子,今天就爽爽眼吧!同时感谢夜空版主为本贴做的翻译:handshake
Cassini's View of Jupiter's South Pole
Mon, 27 Mar 2006 - Cassini took many photographs of Jupiter on the way to Saturn, including this unusual montage of its southern pole. This photograph was made up of 36 separate images, stitched together on computer. The planet looks strange because the photo is a polar stereographic projections, which shows the southern pole in the middle, and the equator at the edges. The original images were captured on December 11th and 12th, 2000.
2006年3月27日,星期一,“卡西尼”在飞往土星的途中拍摄了许多木星的照片。包括这张不寻常的蒙太奇木星南极照片。这张图片由36张互不相同的照片组成,一起在电脑里拼接而成。行星看起来如此之怪是因为这张照片是极地立体投影拍摄而成的,使得南极看起来在中央,而赤道在边缘,原始图像拍摄2000年12月11、12日。
Full article
Jupiter as mapped by Cassini. Image credit: NASA/JPL/SSI
These color maps of Jupiter were constructed from images taken by the narrow-angle camera onboard NASA's Cassini spacecraft on Dec. 11 and 12, 2000, as the spacecraft neared Jupiter during its flyby of the giant planet. Cassini was on its way to Saturn. They are the most detailed global color maps of Jupiter ever produced; the smallest visible features are about 120 kilometers (75 miles) across. For other maps see PIA07782 and PIA07783. (Related thumbnail images available here.)
The maps are composed of 36 images: a pair of images covering Jupiter's northern and southern hemispheres was acquired in two colors every hour for nine hours as Jupiter rotated beneath the spacecraft. Although the raw images are in just two colors, 750 nanometers (near-infrared) and 451 nanometers (blue), the map's colors are close to those the human eye would see when gazing at Jupiter.
The maps show a variety of colorful cloud features, including parallel reddish-brown and white bands, the Great Red Spot, multi-lobed chaotic regions, white ovals and many small vortices. Many clouds appear in streaks and waves due to continual stretching and folding by Jupiter's winds and turbulence. The bluish-gray features along the north edge of the central bright band are equatorial "hot spots," meteorological systems such as the one entered by NASA's Galileo probe. Small bright spots within the orange band north of the equator are lightning-bearing thunderstorms. The polar regions shown here are less clearly visible because Cassini viewed them at an angle and through thicker atmospheric haze.
The round maps are polar stereographic projections that show the north or south pole in the center of the map and the equator at the edge.
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 mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo.
For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov . The Cassini imaging team homepage is at http://ciclops.org .
Original Source: NASA/JPL/SSI News Release
这些木星的彩色图像是美国宇航局的卡西尼飞船上的窄视野照相机在2000年12月11、12日,飞船在经过木星的飞行中临近木星时所拍摄的图片组成的。“卡西尼”仍在飞往土星的途中。它们是至今为止拍摄到最详细的木星全球彩色图像;最小的可见特征是横向120公里[75英里]。其它图像可以参考PIA07782 和 PIA07783[相关的小图也可以在此得到]。
这些图像由036张图片组成:当木星在飞船下旋转每9个小时中的一小时,就会获得两张用两种不同颜色表示的,分别覆盖木星南北半球的图片,尽管这些未经处理的照片只有两种颜色,750纳米[近红外波段]和450纳米[蓝光波段],但图片的颜色接近人们观察木星时所看到的颜色。
图像显示了各种各样五颜六色的云层特征,包括平行的红棕色和白色云带、大红斑、许多混乱破碎的地域、白色的椭圆和小漩涡。许多云层出现条纹和波浪是受到木星风和湍流频繁的拉伸和折叠。沿着中央北部明亮带的青灰色特征是赤道的热点,美国宇航局的伽利略大气探测器便是由此进入。在赤道北部的橙色带里小而明亮的斑点是夹杂着闪电的雷暴雨。极地地区在这里显得不大清晰的可见是因为“卡西尼”从一个倾角来观察它们和透过了更加厚实的大气阴霾。
这张圆形图像是用极地立体投影拍摄的,北极或南极显示在图中央,赤道在边缘。
卡西尼-惠更斯任务是美国宇航局、欧空局和意大利空间局的合作项目。喷气推进实验室(Jet Propulsion Laboratory)是位于加利福尼亚州帕萨迪那美国国家航空 航天局的一个下属机构,处理使命为美国航空航天局的科学使命董事会, 华盛顿, D 。C 。负责设计和装配”卡西尼“和它上面的两台照相机。图片控制中心位于巨石城的空间科学学院。
更多的卡西尼-惠更斯任务的信息点击http://saturn.jpl.nasa.gov ,卡西尼图片组的主页http://ciclops.org
原始资料来自:NASA/JPL/SSI News Release
(翻译:夜空)
[ 本帖最后由 夜猫子 于 2006-3-30 11:38 PM 编辑 ] |
|