| Piú votate - Saturn: the "Ringed Beauty" and His Moons |
Tethys-N00086750.jpgThe cratered Lands of Tethys (7)57 visitenessun commentoMareKromium
(4 voti)
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Helene-N00086688.jpgJust like Phobos: Helene (2)59 visitenessun commentoMareKromium
(4 voti)
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Tethys-N00086711.jpgThe cratered Lands of Tethys (5)57 visitenessun commentoMareKromium
(4 voti)
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Rhea-PIA08986.jpgRhea, in the Saturnshine (natural colors - elab. Lunexit)67 visiteCaption NASA:"The night side of Rhea shines softly in reflected light from Saturn. A similar effect, called Earthshine, can often be seen dimly illuminating the dark side Earth's Moon.
Background stars make short, dim trails across the black sky. The sunlit terrain on Rhea is so much brighter than the part lit by Saturn that the former is completely overexposed in this view, which took more than 30" to acquire.
This view looks toward the Leading Hemisphere on Rhea. North is up and rotated 28° to the left.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on June 11, 2007. The view was obtained at a distance of approx. 364.000 Km (such as about 226.000 miles) from Rhea and at a Sun-Rhea-spacecraft, or phase, angle of 154°. Image scale is roughly 4 Km (about 3 miles) per pixel".MareKromium
(4 voti)
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Enceladus-N00085404.jpgEnceladus (natural colors - elab. Lunexit)56 visiteCaption NASA:"N00085404.jpg was taken on June 28, 2007 and received on Earth June 29, 2007. The camera was pointing toward Enceladus that, at the time, was approx. 293.794 Km away.
This image was taken using the BL1 and CL2 filters and it has not been validated or calibrated".MareKromium
(4 voti)
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Enceladus-N00085255.jpgEnceladus (1) - (natural colors - elab. Lunexit)56 visiteCaption NASA:"N00085255.jpg was taken on June 28, 2007 and received on Earth June 29, 2007. The camera was pointing toward Enceladus that, at the time, was approx. 287.050 Km away. The image was taken using the CL1 and CL2 filters.
This image has not been validated or calibrated".MareKromium
(4 voti)
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Tethys-N00085224.jpgTethys' surface, in the Saturn-shine (6 - natural colors - elab. Lunexit)58 visiteCaption NASA:"N00085224.jpg was taken on June 27, 2007 and received on Earth June 28, 2007. The camera was pointing toward Tethys that, at the time, was approx. 76.993 Km away. The image was taken using the CL1 and CL2 filters.
This image has not been validated or calibrated".MareKromium
(4 voti)
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Tethys-N00085206.jpgTethys' surface, in the Saturn-shine (2 - natural colors - elab. Lunexit)61 visiteCaption NASA:"N00085206.jpg was taken on June 27, 2007 and received on Earth June 28, 2007. The camera was pointing toward Tethys that, at the time, was approx. 16.027 Km away. The image was taken using the CL1 and CL2 filters.
This image has not been validated or calibrated".MareKromium
(4 voti)
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Atlas-N00084624.jpgAtlas (1)82 visiteUna nuova (e secondo noi spettacolare, anche se segnata da innumerevoli artifacts) inquadratura della piccola luna-pastore saturniana "Atlas" la quale, nella maggior parte delle immagini Cassini, ci appare come un semplice ed insignificante puntino a ridosso dell'Anello "A" del Gigante Gassoso.
In questo frame, si distingue una regione di Atlas che appare caratterizzata da rilievi stratiformi i quali vengono a formare una sorta di montagna dall'apparenza conica e sulla cui sommità, che in questo frame è visibile proprio a ridosso del Terminatore, si intuisce l'esistenza di crepacci e, forse, di una vera e propria catena di strapiombi. Indefinibile in rilievo posto ad ore 11, sempre sulla linea del Terminatore (potrebbe essere un rilievo assimilabile ad una caldera).
Il resto di questo minuscolo mondo (dim. -> 37x34,4x27 Km), immerso nella luce del Sole, si presenta relativamente liscio - ma questo potrebbe essere un semplice effetto derivante dalla sovrasaturazione della porzione di frame che inquadra le regioni illuminate di Atlas - e molto luminoso. Da notare, tra ore 5 ed ore 6, la presenza di 2 o 3 rilievi che potrebbero essere dei crateri e, ad ore 2 e tra ore 4 ed ore 5, vediamo dei grandi bacini i quali conferiscono a questo corpo celeste l'apparente forma di un tubero.
La colorazione che abbiamo adottato (grigio/azzurra di base) è di fantasia ma, nello sceglierla, ci siamo riferiti ai colori naturali di Deimos (la Luna Marziana minore): un corpo celeste interno al quale Atlas a noi sembra assomigliare davvero parecchio.MareKromium
(4 voti)
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Rhea-N00084608.jpgJust a "smile" from Rhea...65 visitenessun commentoMareKromium
(4 voti)
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Saturn-PIA08952.jpgThe Southern Latitudes of Saturn57 visiteCaption NASA:"Stunning details in Saturn's clouds suggest movement within bands of atmosphere. This false color enhancement makes visible an exciting level of detail in the bright and dark bands that is more easily seen at Jupiter than at Saturn.
Saturn's Southern Hemisphere seems to fade into the blackness of space in this view.
The image was taken with the Cassini spacecraft wide-angle camera using a combination of spectral filters sensitive to wavelengths of infrared light centered at 752 (red channel), 890 (blue channel) and 728 (green channel) nanometers.
The view was acquired on Feb. 2, 2007 at a distance of approx. 1 MKM (such as about 600.000 miles) from Saturn.
Image scale is roughly 57 Km (about 36 miles) per pixel".MareKromium
(4 voti)
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Saturn-PIA08944-00.jpgPrometheus Makes Contact (natural colors - elab. NASA)60 visiteCaption NASA:"The F-Ring shepherd moon Prometheus touches the face of Saturn once more before moving off into blackness and continuing in its orbit.
The F-Ring itself is visible as a thin line just below Prometheus (which is about 102 Km, or approx. 63 miles across).
This view looks toward the unilluminated side of the Rings from about 18° above the Ring-Plane. North on Saturn is up and rotated about 30° to the right.
Images taken using red, green and blue spectral filters were combined to create this natural color view.
The images were obtained by the Cassini spacecraft narrow-angle camera on April 13, 2007 at a distance of approx. 1,7 MKM (such as a little more than 1 MMs) from Prometheus and 1,8 MKM (such about 1,1 MMs) from Saturn.
Image scale is roughly 10 Km (6 miles) per pixel".MareKromium
(4 voti)
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