| Ultimi arrivi - Saturn: the "Ringed Beauty" and His Moons |
Tethys-PIA07662.jpgGrand Canyon on Tethys68 visiteA crescent Tethys shows off its Grand Canyon, Ithaca Chasma, for which the moon is renowned. The chasm is about 100 Km (app.x 60 miles) across on average, and its up to 4 Km (about 2 miles) deep in places.
Ithaca Chasma is the most prominent sign of ancient geologic activity on Tethys, whose surface is characterized principally by heavy cratering.
The lit surface visible here is on the moon's Saturn-facing Hemisphere. North on Tethys is straight up.
The image was taken with the Cassini spacecraft narrow-angle camera on Nov. 28, 2005 using a filter sensitive to wavelengths of infrared light centered at 930 nnmts. The view was acquired from a distance of app.x 1,1 MKM (equivalento to about 700.000 miles) from Tethys and at a phase angle of 123°. Resolution in the original image was 6 Km (about 4 miles) per pixel. The image has been magnified by a factor of two and contrast-enhanced to aid visibility.Dic 29, 2005
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Tethys-N00047239.jpgTethys' "Eye"!57 visiteOriginal caption:"N00047239.jpg was taken on December 24, 2005 and received on Earth December 25, 2005. The camera was pointing toward TETHYS that, at the time, was approximately 196.167 kilometers away, and the image was taken using the CL1 and GRN filters".Dic 26, 2005
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Enceladus-N00047261.jpgCrescent Enceladus56 visiteOriginal caption:"N00047261.jpg was taken on December 24, 2005 and received on Earth December 25, 2005. The camera was pointing toward ENCELADUS that, at the time, was approximately 108.349 Km away, and the image was taken using the RED and CL2 filters".Dic 26, 2005
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Telesto-N00047273.jpgTelesto59 visiteOriginal caption:"N00047273.jpg was taken on December 25, 2005 and received on Earth December 26, 2005. The camera was pointing toward TELESTO that, at the time, was approximately 21.404 kilometers away, and the image was taken using the CL1 and CL2 filters".
Nota: secondo Voi è il movimento della Sonda rispetto a Cassini che ha determinato il repentino cambio di posizione di Telesto in questi due frames, oppure Telesto è un'altra - vera, questa volta! - "Tumbling Moon" (al pari - presunto - di Hyperion)?!?Dic 26, 2005
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Telesto-N00047270.jpgTelesto57 visiteOriginal caption:"N00047270.jpg was taken on December 25, 2005 and received on Earth December 26, 2005. The camera was pointing toward TELESTO that, at the time, was approximately 20.919 kilometers away, and the image was taken using the CL1 and UV3 filters".Dic 26, 2005
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Janus-N00047285.jpgThe "Runners": Janus and Epimetheus (3)57 visiteOriginal caption:"N00047285.jpg was taken on December 25, 2005 and received on Earth December 26, 2005. The camera was pointing toward Epimetheus (and Janus) that, at the time, was approximately 459.714 Km away. The image was taken using the CL1 and CL2 filters".Dic 26, 2005
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Janus-N00047282.jpgThe "Runners": Janus and Epimetheus (2)58 visiteOriginal caption:"N00047282.jpg was taken on December 25, 2005 and received on Earth December 26, 2005.
The camera was pointing toward Epimetheus (and Janus) that, at the time, was approx. 456.101 Km away. The image was taken using the CL1 and CL2 filters".Dic 26, 2005
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Janus-N00047277.jpgThe "Runners": Janus and Epimetheus (1)58 visiteOriginal caption:"N00047277.jpg was taken on December 25, 2005 and received on Earth December 26, 2005. The camera was pointing toward Epimetheus (and Janus) that, at the time, was approximately 450.089 Km away. The image was taken using the CL1 and CL2 filters".Dic 26, 2005
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Japetus-PIA07660.jpgLand of the Day, Land of the Night59 visiteAlthough it is no longer "Uncharted Land", the origin of the dark territory of Cassini Regio on Iapetus remains a mystery.
Also puzzling is the equatorial ridge that bisects this terrain, and how it fits into the story of the moon's strange brightness dichotomy. The ridge is seen here, curving along the lower left edge of Iapetus.
The view looks down onto the Northern Hemisphere of Iapetus, and shows terrain on the moon's Leading Hemisphere.
The image was taken in polarized green light with the Cassini spacecraft narrow-angle camera on Nov. 12, 2005 at a distance of approx. 417.000 Km (such as about 259.000 miles) from Iapetus and at a Sun-Iapetus-spacecraft, or phase, angle of 95°. Image scale is about 2 Km (about 1 mile) per pixel.Dic 26, 2005
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Rhea-N00047118.jpgRhea59 visiteOriginal caption:"N00047118.jpg was taken on December 23, 2005 and received on Earth December 24, 2005. The camera was pointing toward RHEA that, at the time, was approximately 341.537 Km away.
The image was taken using the CL1 and CL2 filters".Dic 25, 2005
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Rhea-N00047136.jpgRhea59 visiteOriginal caption:"N00047136.jpg was taken on December 23, 2005 and received on Earth December 24, 2005. The camera was pointing toward RHEA that, at the time, was approximately 283.082 Km away.
The image was taken using the CL1 and IR3 filters".Dic 25, 2005
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Dione-N00047220.jpgDione97 visiteOriginal caption:"N00047220.jpg was taken on December 24, 2005 and received on Earth December 24, 2005. The camera was pointing toward DIONE that, at the time, was approximately 435.332 Km away.
The image was taken using the CL1 and CL2 filters".Dic 25, 2005
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