卡西尼最近的作品展示

夜空

以下图片均由：Credit: NASA/JPL/Space Science Institute


The Storm Continues
Released: March 29, 2006

风暴仍在肆虐
发布: 2006 年3月29 日

   Cassini looks toward giant Saturn and its moon Tethys, while a large and powerful storm rages in the planet’s southern hemisphere. The storm was observed by Cassini beginning in late Jan. 2006, and was at the time large and bright enough to be seen using modest-sized telescopes on Earth.

卡西尼在观察巨行星土星和它的卫星Tethys时, 正有一个巨大和充满能量的风暴在行星的南半球肆虐。卡西尼从2006 年1月下旬开始一直在观测这个风暴，同时风暴也足够的大和明亮来从地球上用合适大小的望远镜观测到。


The fact that the storm stands out against the subtle banding of Saturn at visible wavelengths suggests that the storm’s cloud tops are relatively high in the atmosphere.

事实上在可看见光波段揭示了由土星上细微条纹衬托出的风暴其云顶比周围的区域显著要高。

Tethys is 1,071 kilometers (665 miles) across.

The image was taken in visible light with the Cassini spacecraft wide-angle camera on Feb. 18, 2006, at a distance of approximately 2.8 million kilometers (1.7 million miles) from Saturn. The image scale is 162 kilometers (101 miles) per pixel on Saturn.

Tethys 横跨土星1,071 公里(665 英哩) 。

图像是卡西尼太空船上的广角照相机于2006年2月18日在距土星大约2.8 百万公里 (1.7 百万英哩)处采用可见光拍摄的。图像精度是在土星上每像素162 公里(101 英哩)。



[ 本帖最后由 夜空 于 2006-4-5 09:15 PM 编辑 ]

夜空

Small Moons on the Edge
March 30, 2006

Staring toward the outer edge of Saturn’s main rings, Cassini spots Pandora and tiny Atlas. Several clumps are visible in the narrow F ring, as well as multiple dusty strands flanking the F ring core.

Pandora (84 kilometers, 52 miles across) is seen here outside the F ring, while Atlas (32 kilometers, 20 miles across) is a mere dim pixel just above the bright outer edge of the A ring.

边缘的小卫星
2006 年3月30 日

往土星的主环边缘外凝望, 卡西尼的焦点聚集在Pandora潘多拉[土卫十七]和细小的Atlas（土卫十五）。一些土块可以在狭窄的F环里看到, 就像F环中心边缘的微尘一样多。
Pandora (84 公里, 52 英哩)可以在F 圆环之外看到, 当Atlas（土卫十五）(32 公里, 20 英哩)仅仅是一个在明亮的A环边缘外之上的昏暗点。



[ 本帖最后由 夜空 于 2006-4-9 08:17 PM 编辑 ]

夜空

Rhea Beyond the Rings
March 31, 2006

   Crater-scarred Rhea floats in the distance, peeking out from behind Saturn’s partly shadowed rings. This view looks upward from just beneath the ringplane. The far side of the rings is masked by Saturn’s shadow.

有许多坑和斑纹的土卫五漂浮在远方，正从土星环外面的阴暗部分窥视着。这景象是从土星环平面稍微下一点往上看到的。光环的较远的一边被土星的阴影遮掩了。

A few bright wispy markings curl around the eastern limb of Rhea (1,528 kilometers, 949 miles across).

一些小而明亮的斑纹缠绕在土卫五的东部。(直径1,528 公里, 949 英里).


[ 本帖最后由 夜空 于 2006-4-30 10:54 AM 编辑 ]

夜空

Structure in the Shadows
Released: March 28, 2006

Shadows drape Saturn’s northern hemisphere, providing a different kind of look at prominent features in the rings. From the lower left corner upward, the visible features are: the shadow of the outer B ring, followed by the wide, bright Cassini Division, then the A ring with the thin, bright Encke Gap and finally the dark, narrow F ring.

The image was taken with the Cassini spacecraft narrow-angle camera on Feb. 18, 2006, using a filter sensitive to wavelengths of infrared light centered at 750 nanometers, and at a distance of approximately 2.8 million kilometers (1.7 million miles) from Saturn. The image scale is 16 kilometers (10 miles) per pixel.


[ 本帖最后由 夜猫子 于 2006-4-3 12:38 AM 编辑 ]

夜空

Sensational Sights Raw Preview #8
Released: March 27, 2006

   Cassini continues seeking the plumes of Enceladus in this raw, unprocessed image taken at high phase angle (the Sun-Enceladus-spacecraft angle), which is the best viewing geometry for imaging the icy jets of material.

The image was taken on Mach 24, 2006 with the narrow angle camera from a distance of approximately 1.9 million kilometers (1.2 million miles) from Enceladus and at a Sun-Enceladus-spacecraft, or phase, angle of 162 degrees. Resolution in the image is about 11 kilometers (7 miles) per pixel.


[ 本帖最后由 夜猫子 于 2006-4-3 12:39 AM 编辑 ]

夜空

Against the Current

Released: March 27, 2006

   Storm Alley’s latest, greatest resident, the recent lightning-producing storm seen by Cassini and Earth-based observers churns away. Turbulent eddies to the west (left) of the storm indicate that it is moving eastward relative to the westward-flowing winds at this latitude on Saturn.

Scientists gave the nickname “Storm Alley” to the area around 35 degrees south latitude because of the large amount of activity seen there from the beginning of Cassini’s approach to Saturn in early 2004. The region has spawned two large and powerful storms since Cassini began observations.

The image was taken with the Cassini spacecraft narrow-angle camera on Feb. 16, 2006, using a filter sensitive to wavelengths of infrared light centered at 750 nanometers, and at a distance of approximately 3.2 million kilometers (2 million miles) from Saturn. The image scale is 19 kilometers (12 miles) per pixel.

与当前相对


     胡同风暴的最新、最大的居民,近日闪电生产风暴被卡西尼被和基于地球的观察员频繁观测到.风暴西边(左边)湍急的旋涡,表明它相对于土星这个纬度上西向东吹的风是东向西运动的.

科学家把土星南纬35度周围的地区戏称为"胡同风暴",因为从卡西尼在2004年年初开始接近土星时便一直有大量的活动被观测到.该地区自卡西尼开始观测以来便产生了两个强大和充满能量的风暴.

图像是2006年2月16日卡西尼号飞船的窄视角相机用对红外波段敏感的滤镜在750纳米的红外波段在距离土星约320万公里(200万英里)处拍摄的. 图像分辨率是每象素19公里(12英里).



[ 本帖最后由 夜空 于 2006-4-30 10:25 AM 编辑 ]

夜空

Vortices Abound
Released: March 24, 2006

Saturn’s atmosphere comes alive with a multitude of dark vortices swirling through the southern hemisphere.

Vortices are long-lived features that are part of the general circulation of Saturn’s atmosphere. Vortices are counterparts to the eastward- and westward-flowing jets – the alternating bands flowing past each other in the atmosphere. The vortices can last for months or years and probably grow by merging with other vortices until a few dominate a particular zone of wind shear between two jets.

The vortex at upper right is one of the largest vortices on Saturn.

The image was taken with the Cassini spacecraft narrow-angle camera on Feb. 16, 2006 at a distance of approximately 3.2 million kilometers (2 million miles) from Saturn. The image scale is 19 kilometers (12 miles) per pixel.


[ 本帖最后由 夜猫子 于 2006-4-3 12:41 AM 编辑 ]

夜空

Saturnian Specters

Ghostly details make this dark scene more than just a beautiful grouping of two moons. In Titan’s thick and distended atmosphere, the detached high haze layer can be seen, as well as the complex northern polar hood (at top). Images like this one can help scientists make definitive estimates of the altitudes to which the high haze extends.

Between Titan and Tethys (horizontally) is the very faint apparition of Saturn’s G ring, just discernable above the level of background noise in the image.

The faint vertical banded pattern here is a type of noise that usually is removed during image processing. Because this image was processed to enhance the visibility of details in Titan's atmosphere and the faint G ring, the vertical noise was also enhanced.

Titan is Saturn’s largest moon, at 5,150 kilometers (3,200 miles) across; Tethys is 1,071 kilometers (665 miles) across.

The view was obtained in visible light with the Cassini spacecraft narrow-angle camera on Jan. 19, 2006, at a distance of approximately 2.4 million kilometers (1.5 million miles) from Titan and 1 million kilometers (600,000 miles) from Tethys. The image scale is 14 kilometers (9 miles) per pixel on Titan and 6 kilometers (4 miles) per pixel on Tethys.


[ 本帖最后由 夜猫子 于 2006-4-3 12:42 AM 编辑 ]

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Sensational Sights Raw Preview #3
Released: March 22, 2006

   This unprocessed image was taken on March 21, 2006 and shows Rhea in front of Saturn.

The image was taken with the wide angle camera from a distance of approximately 221,100 kilometers (137,400 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 145 degrees. Resolution in the image is about 13 kilometers (8 miles) per pixel.


[ 本帖最后由 夜猫子 于 2006-4-3 12:44 AM 编辑 ]

夜空

Sensational Sights Raw Preview #6
Released: March 22, 2006

This unprocessed image was taken on March 21, 2006 and shows Mimas in front of Saturn.

The image was taken with the narrow angle camera from a distance of approximately 190,700 kilometers (118,500 miles) from Mimas and at a Sun-Mimas-spacecraft, or phase, angle of 91 degrees. Resolution in the image is about 1 kilometer (3,729 feet) per pixel.


[ 本帖最后由 夜猫子 于 2006-4-3 12:45 AM 编辑 ]

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Sensational Sights Raw Preview #2
Released: March 22, 2006

This unprocessed image was taken on March 21, 2006 and shows Janus in front of the rings and Titan beyond.

The image was taken with the narrow angle camera from a distance of approximately 724,500 kilometers (450,200 miles) from Janus and at a Sun-Janus-spacecraft, or phase, angle of 152 degrees. Resolution in the image is about 4 kilometers (3 miles) per pixel.


[ 本帖最后由 夜猫子 于 2006-4-3 12:46 AM 编辑 ]

夜空

Sensational Sights Raw Preview #7
Released: March 22, 2006

Cassini continues seeking the plumes of Enceladus in this raw, unprocessed image taken at high phase angle (the Sun-Enceladus-spacecraft angle), which is the best viewing geometry for imaging the icy jets of material.

The image was taken with the narrow angle camera from a distance of approximately 1.3037 million kilometers (810,100 miles) from Enceladus and at a Sun-Enceladus-spacecraft, or phase, angle of 160 degrees. Resolution in the image is about 8 kilometers (5 miles) per pixel.


[ 本帖最后由 夜猫子 于 2006-4-3 12:47 AM 编辑 ]

夜空

Where’s Saturn?
Released: March 22, 2006

Cassini captures three moons at once as they hurtle around Saturn. In the background, Saturn’s night side occults the more distant portion of the rings, betraying the presence of the unseen giant.

At left and right respectively, the two smaller moons are Epimetheus (116 kilometers, 72 miles across) and Pandora (84 kilometers, 52 miles across). Larger Mimas (397 kilometers, 247 miles across) lies below.

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Feb. 16, 2006, at a distance of approximately 3.3 million kilometers (2.1 million miles) from Saturn. The image scale is about 20 kilometers (12 miles) per pixel.


[ 本帖最后由 夜猫子 于 2006-4-3 12:48 AM 编辑 ]

夜空

Sensational Sights Raw Preview #1
Released: March 22, 2006

This unprocessed image was taken on March 21, 2006 and shows the unlit side of Saturn's rings.

The image was taken with the narrow angle camera from a distance of approximately 770,100 kilometers (478,500 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 143 degrees. Resolution in the image is about 4 kilometers (3 miles) per pixel.


[ 本帖最后由 夜猫子 于 2006-4-3 12:49 AM 编辑 ]

夜空

The Rings Make a Point
Released: March 21, 2006

This perspective, from just beneath Saturn's ringplane, gives the rings a pointed appearance and captures a few clumps at the edge of the narrow F ring. Tethys (1,071 kilometers, 665 miles across) floats peacefully in the distance.

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Feb. 12, 2006, at a distance of approximately 4.1 million kilometers (2.6 million miles) from Tethys. The image scale is 25 kilometers (16 miles) per pixel on Tethys.


[ 本帖最后由 夜猫子 于 2006-4-3 12:50 AM 编辑 ]