| Ultimi arrivi - Saturn: the "Ringed Beauty" and His Moons |
Dione-PIA07745-3.jpgDione's horizon - HD (3)82 visitenessun commentoOtt 18, 2005
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Dione-PIA07745-2.jpgDione's horizon - HD (2)82 visitenessun commentoOtt 18, 2005
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Dione-PIA07745-1.jpgDione's horizon - HD (1)59 visiteOriginal caption:"As it departed its encounter with Saturn's moon Dione, Cassini sailed above an unreal landscape blasted by impacts. The rising Sun throws craters into sharp contrast and reveals steep crater walls.
At the far right, a medium-sized crater is bisected by a fracture, revealing a cross section of the impact site.
The seven clear-filter images in this mosaic were taken with the Cassini spacecraft narrow-angle camera on Oct. 11, 2005, at distances ranging from of 21.650 to 25.580 Km (about 13.450 to 15.890 miles) from Dione and at a Sun-Dione-spacecraft, or phase, angle of 154°. Resolution in the original images ranges from 126 to 154 mt (about 413 to 505 feet) per pixel. The images have been re-sized to have an image scale of about 100 mt (330 feet) per pixel. North on Dione is 140° to the left".Ott 18, 2005
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Dione-PIA07744.jpgDione and Saturn (natural colors)87 visiteOriginal caption:"Speeding toward pale, icy Dione, Cassini's view is enriched by the tranquil gold and blue hues of Saturn in the distance. The horizontal stripes near the bottom of the image are Saturn's Rings. The spacecraft was nearly in the plane of the Rings when the images were taken, thinning them by perspective and masking their awesome scale. The thin, curving shadows of the C-Ring and part of the B-Ring adorn the Northern Latitudes visible here, a reminder of the Rings' grandeur.
It is notable that Dione, like most of the other icy Saturnian satellites, looks no different in natural color than in monochrome images. Images taken on Oct. 11, 2005, with blue, green and infrared (centered at 752 nnmts) spectral filters were used to create this color view, which approximates the scene as it would appear to the human eye. The images were obtained with the Cassini spacecraft wide-angle camera at a distance of approx. 39.000 Km from Dione and at a phase angle of 22°.
The image scale is about 2 Km/pixel".Ott 18, 2005
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Janus-N00041468-2.jpgJanus?64 visitenessun commentoOtt 17, 2005
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Mimas-W00011156.jpgMimas in the night55 visiteOriginal caption:"W00011156.jpg was taken on October 13, 2005 and received on Earth October 14, 2005. The camera was pointing toward MIMAS - at approximately 710.418 Km away - and the image was taken using the CB2 and IRP90 filters. This image has not been validated or calibrated".Ott 17, 2005
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Saturn-W00011214.jpgIn the darkness...57 visiteUn'immagine splendida e suggestiva: Mimas, una delle lune più piccole di Saturno, splende nella notte e tiene "compagnia", con la sua luce, agli Anelli del Gigante, anch'essi luminosissimi (forse anche perchè l'immagine è leggermente sovraesposta). Vi segnaliamo, cerchiata in bianco, una interessante Anomalìa: potrebbe trattarsi di un raggio cosmico (teoria NASA), oppure di un difetto dell'immagine. Oppure si potrebbe anche trattare, come sembra elaborando l'immagine dopo averla portata sino al full-size, di un oggetto luminoso (di enormi dimensioni) in transito nello Spazio di Saturno. In questo caso specifico, quest'ultima ipotesi ci pare la più (incredibilmente...) credibile.Ott 17, 2005
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Dione-N00041359.jpgHalf-Dione, in the darkness...57 visiteN00041359.jpg was taken on October 13, 2005 and received on Earth October 14, 2005. The camera was pointing toward DIONE - distant approximately 711.554 Km away - and the image was taken using the P120 and MT2 filters. This image has not been validated or calibrated.
Nota: lo Staff di Lunar Explorer, studiando le statistiche del Sito, ha notato che le immagini in arrivo da Saturno suscitano (se rapportate a Marte o alla Luna) un interesse davvero bassissimo. E' giusto che ogni Appassionato si dedichi a quello che ritiene più interessante e, spesso, ciò che appare più interessante è anche ciò che si trova "più vicino". La Luna e Marte, se questo approccio è esatto, sono esempi molto chiari.
Tuttavia, se ci consentite una parola sul Sistema di Saturno, vorremmo rammentarVi che, spesso, la comprensione di quello che si trova più vicino a noi (diremmo "a portata di mano"...) è semplificata dallo studio e/o (anche) dalla semplice osservazione di quello che - invece - si trova molto lontano...Ott 15, 2005
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Mimas-N00041399.jpgMimas and Prometheus56 visiteN00041399.jpg was taken on October 13, 2005 and received on Earth October 14, 2005. The camera was pointing toward PROMETHEUS - distant approximately 769.213 Km away - and the image was taken using the CL1 and CL2 filters. This image has not been validated or calibrated. Ott 15, 2005
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Mimas-N00041424.jpgMimas and the Rings58 visiteN00041424.jpg was taken on October 13, 2005 and received on Earth October 14, 2005. The camera was pointing toward MIMAS - distant approximately 710.721 Km away - and the image was taken using the CL1 and GRN filters. This image has not been validated or calibrated.Ott 15, 2005
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Tethys-N00041433.jpgCrescent Tethys57 visiteN00041433.jpg was taken on October 13, 2005 and received on Earth October 14, 2005. The camera was pointing toward TETHYS - distant approximately 644.161 Km away - and the image was taken using the P0 and GRN filters. This image has not been validated or calibrated.Ott 15, 2005
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Janus-N00041468.jpgJanus and Prometheus57 visiteN00041468.jpg was taken on October 13, 2005 and received on Earth October 14, 2005. The camera was pointing toward JANUS - distant approximately 876.959 Km away - and the image was taken using the CL1 and CL2 filters. This image has not been validated or calibrated.Ott 15, 2005
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