Saturn: the "Ringed Beauty" and His Moons
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Pandora-N00154611-17-23-EB-LXTT.jpgApproaching Pandora (an Image-Mosaic by Elisabetta Bonora - Lunexit Team)77 visitenessun commentoMareKromium
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Pandora-N00154612-13-14-EB-LXTT.jpgApproaching Pandora (an Image-Mosaic by Elisabetta Bonora - Lunexit Team)68 visitenessun commentoMareKromium
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Pandora-N00154618-19-20-EB-LXTT.jpgApproaching Pandora (an Image-Mosaic by Elisabetta Bonora - Lunexit Team)73 visitenessun commentoMareKromium
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Pandora-N00154624-25-26-EB-LXTT.jpgApproaching Pandora (an Image-Mosaic by Elisabetta Bonora - Lunexit Team)71 visitenessun commentoMareKromium
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Pandora-PIA06618~0.jpgPandora at the edge of the Rings64 visiteCaption NASA originale:"Pandora is seen in this dramatic view, orbiting just beyond the outer edge of Saturn's F-Ring. Several bright areas are visible within the F-Ring. In the main Rings, the Keeler gap and the Encke gap - with a bright ringlet - are also visible. Pandora is 84 Km (approx. 52 miles) across. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Feb. 18, 2005, at a distance of approximately 1,2 MKM (approx. 746.000 miles) from Pandora and at a Sun-Pandora-spacecraft angle of 108°. The image scale is 7 Km per pixel".
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Pandora-PIA07523.jpgPandora and the F-Ring55 visiteCaption NASA originale:"The shepherd moon, Pandora, is seen here alongside the narrow F-Ring that it helps maintain in the right equlibrium.
Cassini obtained this view from about 4° above the ringplane. Captured here are several faint, dusty ringlets in the vicinity of the F-Ring core.
The ringlets do not appear to be perturbed to the degree seen in the core.
The appearance of Pandora here is exciting, as the moon's complete shape can be seen, thanks to reflected light from Saturn, which illuminates Pandora's dark side; also the hint of a crater is visible on the dark side of the moon.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on May 4, 2005, at a distance of approx. 967.000 Km (such as approx. 601.000 miles) from Pandora and at a Sun-Pandora-spacecraft angle of 117°. The image scale is 6 Km per pixel".
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Pandora-PIA07530.jpgPandora: the closest view so far!56 visiteCaption NASA originale:"This is one of Cassini's closest views to date of Saturn's F-Ring shepherd moon Pandora. At least one crater is visible on the surface of this moon, which is thought to be an icy rubble pile, loosely bound together by gravity. Pandora is 84 Km across.
Several of Saturn's Ring moons, including Pandora, show elongated, oval-like shapes with their long axes oriented along the moon-Saturn line. In this view, Cassini is looking at the side of Pandora facing away from Saturn. The image shows the moon's leading hemisphere (although, as mentioned, Pandora is not actually round). To the right, much of the moon's surface is in shadow. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on May 20, 2005, at a distance of approx. 346.000 Km from Pandora and at a Sun-Pandora-spacecraft, or phase, angle of 21°".
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Pandora-PIA07570.jpgPandora, from 1,3 MKM53 visiteWhile close to Saturn in its orbit, Cassini stared directly at the Planet to find Saturn's moon Pandora in the field of view. The F-Ring shepherd moon is gliding towards the right in this scene. The F-Ring is thinly visible just above the main rings. Pandora is 84 Km (about 52 miles) across.
Near the lower left, some variation in the height of Saturn's cloud tops can be detected. This effect is often visible near the terminator (such as the day and night boundary), where the Sun is at a very low angle above Saturn's horizon.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on July 16, 2005, at a distance of approx. 1,3 MKM (about 800.000 miles) from Saturn.
The image scale is about 8 Km (about 5 miles) per pixel on Saturn and about 6 Km (about 4 miles) per pixel on Pandora.
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Pandora-PIA07602.jpgPandora55 visiteOriginal caption:"Saturn's moon Pandora is almost overwhelmed by the brightness of the F-Ring in this view. The F-Ring's bright core displays kinks and is flanked by fainter ringlets. Imaging scientists recently determined these fainter ringlets to be a single spiral ring that winds around the Planet. Pandora is faintly lit by "Saturnshine," or reflected light from the planet, and few features can be seen here. This image was acquired by Cassini exactly three hours after the spacecraft took the image seen in previous PIA07601, which showed Prometheus interior to the F-Ring.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Aug. 21, 2005, at a distance of appx. 583.000 Km from Saturn and at a high Sun-Saturn-spacecraft angle of 136°. Resolution is about 3 Km per pixel".
Nota: osservate il frame PIA07530 e poi confrontate le due immagini di Pandora. A noi sembra che ci sia una "profonda" differenza e che il corpo celeste ripreso nei due frames NON sia lo stesso.
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Pandora-PIA07604.jpgOccultation!55 visiteOriginal caption:"Saturn's moon Pandora glides in front of the narrow F-Ring, making the moon's oblong outline visible. The image also shows the A-Ring, the Cassini Division, the B-Ring and part of the C-Ring. This view is from beneath the Ring plane. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Aug. 23, 2005, at a distance of approximately 1,6 MKM (about 1 MMs) from Pandora and at a Sun-Pandora-spacecraft, or phase, angle of 97°. Resolution in the original image was 9 Km (about 6 miles) per pixel".
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Pandora-PIA07632.jpgBeautiful Pandora (false colors)91 visiteCassini's best close-up view of Saturn's F-Ring shepherd moon, Pandora, shows that this small ring-moon is coated in fine dust-sized icy material.
Craters formed on this object by impacts appear to be covered by debris, a process that probably happens rapidly in a geologic sense. The grooves and small ridges on Pandora suggest that fractures affect the overlying smooth material. The crisp craters on another Saturn moon, Hyperion, provide a contrasting example of craters on a small object.
Cassini acquired infrared, green and ultraviolet images on Sept. 5, 2005, which were combined to create this false-color view. The image was taken with the Cassini spacecraft narrow-angle camera at a distance of approx. 52.000 Km from Pandora and at a phase angle of 54°. Resolution in the original image was about 300 mt per pixel".
Nota: un'immagine stupenda e spettacolare e poi, per i più attenti, come non notare l'incredibile somiglianza (troppo grande per essere casuale...) di questa luna con Phobos?
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Pandora-PIA07647.jpgPandora and the F-Ring65 visiteThis dramatic image shows Saturn's craggy (---> rocciosa, colma di dirupi) moon Pandora skimming (to skim---> rasentare, sfiorare) along the F-Ring's outer edge.
Pandora orbits about 1.000 Km (approx. 620 miles) exterior to the Ring, but, in this view, is projected onto the Ring.
The moderately high-resolution of the image reveals the moonlet's odd shape.
The image was acquired from less than 1 degree below the Ring-Plane and taken in visible light with the Cassini spacecraft narrow-angle camera on Oct. 29, 2005, at a distance of approx. 455.000 Km (roughly 283.000 miles) from Pandora. The image scale is 3 Km (about 2 miles) per pixel.
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