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美国国家航空航天局NASA每日一图-2017年8月14日(突出泰坦的Haz。)

Highlighting Titan's Hazes

NASA's Cassini spacecraft looks toward the night side of Saturn's moon Titan in a view that highlights the extended, hazy nature of the moon's atmosphere. During its long mission at Saturn, Cassini has frequently observed Titan at viewing angles like this, where the atmosphere is backlit by the Sun, in order to make visible the structure of the hazes.

Titan's high-altitude haze layer appears blue here, whereas the main atmospheric haze is orange. The difference in color could be due to particle sizes in the haze. The blue haze likely consists of smaller particles than the orange haze.

Images taken using red, green and blue spectral filters were combined to create this natural-color view. The image was taken with the Cassini spacecraft narrow-angle camera on May 29, 2017. The view was acquired at a distance of approximately 1.2 million miles (2 million kilometers) from Titan. Image scale is 5 miles (9 kilometers) 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 Caltech 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 https://saturn.jpl.nasa.gov and https://www.nasa.gov/cassini. The Cassini imaging team homepage is at https://ciclops.org.

Image Credit: NASA/JPL-Caltech/Space Science Institute

Last Updated: Aug. 14, 2017
Editor: Martin Perez

突出泰坦的Haz。

美国宇航局的卡西尼航天器望着土星月亮泰坦的夜晚,突出了月球气氛的延续,模糊的性质。在土星的长期任务期间,卡西尼经常在像这样的观察角度观察泰坦,大气层被太阳照亮,以使雾霾的结构变得可见。

泰坦的高空阴霾层在这里显得蓝色,而主要的大气阴霾是橙色的。颜色的差异可能是由于雾度中的粒径。蓝色阴霾可能包含比橙色阴霾更小的颗粒。

使用红色,绿色和蓝色光谱滤光片拍摄的图像合并,以创建这种自然色视图。该图像是在2017年5月29日的卡西尼号飞船窄角摄像机上拍摄的。该视图是从Titan距离大约120万英里(200万公里)的距离获得的。图像尺度为每像素5英里(9公里)。

卡西尼惠更斯任务是美国宇航局,欧洲航天局和意大利航天局的合作项目。喷气推进实验室是帕萨迪纳省加州理工学院的一个部门,管理美国宇航局科学任务总监华盛顿特区的使命卡西尼轨道器及其两台机载摄像机是在JPL设计,开发和组装的。成像作业中心设在科罗拉多州博尔德的空间科学研究所。

有关Cassini-Huygens任务的更多信息,请访问  https://saturn.jpl.nasa.gov  和  https://www.nasa.gov/cassini。卡西尼影像小组主页位于  https://ciclops.org。

图片来源: NASA / JPL-Caltech /空间科学研究所

最后更新:2017年8月14日
编辑:Martin Perez

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