| Piú votate - Saturn: the "Ringed Beauty" and His Moons |
Atlas from Voyager2.jpgAtlas, from Voyager 2 (extra detail mgnf)68 visiteUn buon super detail-mgnf per evidenziare la forma (curiosa) della mini-luna Saturniana Atlas, sino ad ora mai ripresa in maniera soddisfacente dalle Sonde che sono passate (o sono tuttora in transito) nello Spazio di Saturno.
Il frame è stato portato a stretch estremi dal nostro Tecnico delle Immagini ed il risultato è più che decoroso; tuttavia, proprio perchè lo stretch estremo crea o concorre nella creazione di anomalìe ed artefatti, non commentiamo i dettagli "strani" che questo frame ora pare evidenziare.
O meglio: li commenteremo se anche Voi li vedrete e chi chiederete conto di essi...
(4 voti)
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Rhea-N00063370.jpgRhea and the Rings60 visiteCaption originale:"N00063370.jpg was taken on July 01, 2006 and received on Earth July 01, 2006. The camera was pointing toward Rhea that, at the time, was approximately 1.170.687 Km away.
The image was taken using the RED and CL2 filters".
(4 voti)
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Saturn-PIA08212.jpgSaturnian Clouds57 visiteCaption NASA originale:"Cassini images of Saturn's dynamic atmosphere, like this detailed view, will be combined with data from the spacecraft's two infrared-sensing instruments (the Visible and Infrared Mapping Spectrometer - VIMS - and the Composite Infrared Spectrometer - CIS) to measure correlations among cloud features at many altitudes and infer heat flow across the Planet.
The numerous small, white blobs generally indicate disturbed and turbulent regions.
The image was taken with the Cassini spacecraft wide-angle camera on May 22, 2006 at a distance of approx. 331.000 Km (such as approx. 206.000 miles) from Saturn. The image was obtained using a spectral filter sensitive to wavelengths of infrared light centered at 752 nanometers. Image scale is roughly 16 Km (just 10 miles) per pixel".
(4 voti)
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Rhea&Saturn-PIA07806.jpgRhea and Saturn in natural colors58 visiteCaption NASA originale:"The slim crescent of the moon Rhea glides silently onto the featureless, golden face of Saturn. In an interplay of contrast and shadow, the moon goes dark against the Planet, and then its crescent suddenly brightens as it slips in front of Saturn's night side.
This view looks down onto the unlit side of Saturns Rings, which cast soft, linear shadows onto the Planet's Northern Hemisphere.
The image was acquired by the Cassini spacecraft wide-angle camera on March 21, 2006, at a distance of approx. 221.000 Km (about 137.000 miles) from Rhea. The image scale is approx. 13 Km (about 8 miles) per pixel".
(4 voti)
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Saturn-PIA08198.jpgNightflight over Saturn58 visiteCaption NASA originale:"Saturn's atmosphere produces beautiful and sometimes perplexing features. Is the bright feature below center a rare crossing of a feature from a zone to a belt, or is it an illusion created by different cloud layers at different levels? The answer is not always easy to determine.
The image was taken using a spectral filter sensitive to wavelengths of infrared light centered at 938 nanometers.
The image was acquired with the Cassini spacecraft narrow-angle camera on May 12, 2006 at a distance of approx. 2,9 MKM (about 1,8 MMs) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 145°. Image scale is roughly 17 Km (about 10 miles) per pixel".
(4 voti)
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Janus&Prometheus-PIA08192.jpgJanus and Prometheus75 visiteSaturn's moons Janus and Prometheus look close enough to touch in this stunningly detailed view.
From just beneath the Ring-Plane, Cassini stares at Janus on the near side of the Rings, and Prometheus on the far side. The image shows that Prometheus is more elongated than Janus.
The view takes in the Cassini Division (about 4800 Km, or approx. 2980 miles wide), from its outer edge to about halfway across its width.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on April 29, 2006 at a distance of approx. 218.000 Km (such as about 135.000 miles) from Janus and approx. 379.000 Km (such as about 236.000 miles) from Prometheus. Image scale is about 1 Km (roughly 0,6 mile) per pixel on Janus and about 2 Km (a little more than 1 mile) per pixel on Prometheus.
(4 voti)
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Saturn-W00015419.jpgSea of Clouds (3)59 visiteCaption NASA:"W00015419.jpg was taken on May 22, 2006 and received on Earth on May 23, 2006. The camera was pointing toward Saturn that, at the time, was approximately 270.522 Km away.
The image was taken using the MT2 and CL2 filters".
(4 voti)
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Saturn-W00015418.jpgSea of Clouds (2)57 visiteCaption NASA:"W00015418.jpg was taken on May 22, 2006 and received on Earth on May 23, 2006. The camera was pointing toward Saturn that, at the time, was approximately 270.460 Km away.
The image was taken using the CB2 and CL2 filters".
(4 voti)
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Saturn&Titan-PIA07786.jpgSo close and yet so far...60 visiteThe Cassini spacecraft delivers this stunning vista showing small, battered Epimetheus and smog-enshrouded Titan, with Saturn's A and F Rings stretching across the scene. The prominent dark region visible in the A-Ring is the Encke Gap, in which the moon Pan and several narrow ringlets reside. Moon-driven features that mark the A-Ring are easily seen to the left and right of the Encke Gap. The Encke Gap is about 325 Km (approx. 200 miles) wide. Pan is approx. 26 Km (about 16 miles) across. In an optical illusion, the narrow F-Ring, outside the A-Ring, appears to fade across the disk of Titan. A couple of bright clumps can be seen in the F-Ring. Epimetheus is approx. 116 Km (about 72 miles) across and giant Titan is roughly 5.150 Km (about 3.200 miles) across.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on April 28, 2006, at a distance of approx. 667.000 Km(about 415.000 miles) from Epimetheus and 1,8 MKM (about 1,1 MMs) from Titan. The image captures the illuminated side of the rings. The image scale is 4 kilometers (2 miles) per pixel on Epimetheus and 11 kilometers (7 miles) per pixel on Titan.
(4 voti)
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Mimas-W00014998.jpgA bright "slice" of Mimas...56 visitenessun commento
(4 voti)
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Mimas-PIA08172.jpgMimas, from 190.000 Km58 visiteThis amazing perspective view captures battered Mimas against the hazy limb of Saturn.
It is obvious in such close-up images that Mimas (397 Km, or about 247 miles across) has been badly scarred by impacts over the eons. Its 130 kilometer- (80 mile-) wide crater, Herschel, lies in the darkness at right.
North on Mimas is up and rotated 19° to the right.
The image was taken with the Cassini spacecraft narrow-angle camera on March 21, 2006 using a filter sensitive to wavelengths of ultraviolet light centered at 338 nnmts. The image was acquired at a distance of approximately 191.000 Km (approx. 119.000 miles) from Mimas and at a Sun-Mimas-spacecraft, or phase, angle of 91°. Image scale is about 1 Km (such as approx. 3.730 feet) per pixel.
(4 voti)
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Janus-PIA08169.jpgJanus and the Rings59 visiteCaption NASA originale:"Janus peeks out from beneath the Ring-Plane, partially lit here by reflected light from Saturn. A couple of craters can be seen on the moon's surface. To the right, two faint clumps of material can be seen in the dynamic F-Ring.
The perspective in this view may be a bit confusing -- from just below the Ring-Plane, Cassini is gazing toward Janus (181 Km, or 113 miles across), which is behind the Rings.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on March 16, 2006, at a distance of approx. 2,1 MKM (such as about 1,3 MMs) from Janus and at a Sun-Janus-spacecraft, or phase, angle of 103°. Image scale is approx. 12 Km (about 8 miles) per pixel".
(4 voti)
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