| Piú viste - Saturn: the "Ringed Beauty" and His Moons |
Telesto-PIA07696-PCF-LXTT-IPF.jpgTelesto (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia/Italian Planetary Foundation) 81 visiteThis view - obtained by the NASA - CASSINI Spacecraft - shows us a few interesting Surface Features (mostly old Impact Craters and Mountains) as well as fine color variations that are found on the Trojan Saturnian moon Telesto. The smooth Surface of this moon suggests that, like Pandora, even Telesto is covered by a mantle of fine, dust-sized Icy Material. The origin of the color differences is not yet understood, but it may reasonably be caused by extremely subtle variations in the Mineralogical Composition of its Surface, or by the (extremely small) size of the Dusty Grains which make up the Icy Soil. Tiny Telesto is a Celestial Body that is approx. 24 Km (such as about 15 miles) wide only.
The image was acquired with the NASA - Cassini Spacecraft Narrow-Angle Camera on December, 25th, 2005 at a distance of approximately 20.000 Km (such as about 12.000 miles) from Telesto and at a Sun-Telesto-CASSINI Spacecraft, or Phase, Angle of 58°. Image scale is 118 meters (387 feet) per pixel.
This picture (which is an Original NASA - CASSINI Spacecraft b/w frame published on the NASA - Planetary Photojournal with the ID n. PIA 07696) has been additionally processed and then colorized, according to an informed speculation carried out by Dr Paolo C. Fienga (LXXT/IPF), in Absolute Natural Colors (such as the colors that a human eye would actually perceive if someone were onboard the NASA - CASSINI Spacecraft and then looked outside, towards the Saturnian moon, Telesto), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team. Different colors, as well as different shades of the same color, mean, among other things, the existence of different Elements (Minerals) present on the Surface of Telesto, each having a different Albedo (---> Reflectivity) and Chemical Composition.MareKromium
|
|
Dione-PIA06155-1.jpgDione and Saturn in natural colors80 visiteCaption NASA originale:"Cassini captured Dione against the globe of Saturn as it approached the icy moon for its close rendezvous on Dec. 14, 2004. This natural color view shows the moon has strong variations in brightness across its surface, but a remarkable lack of color, compared to the warm hues of Saturn's atmosphere. Several oval-shaped storms are present in the planet's atmosphere, along with ripples and waves in the cloud bands.
The images used to create this view were obtained with the Cassini spacecraft wide-angle camera at a distance of approximately 603.000 Km from Dione through a filter sensitive to wavelengths of ultraviolet light centered at 338 nanometers. The Sun-Dione-spacecraft, or phase, angle is 34°. The image scale is about 32 Km per pixel".
|
|
Rhea-N00048319.jpgFull Rhea80 visiteCaption originale:"N00048319.jpg was taken on January 17, 2006 and received on Earth January 18, 2006. The camera was pointing toward Rhea that, at the time, was approximately 245.031 Km away, and the image was taken using the CL1 and UV3 filters.
This image has not been validated or calibrated".
|
|
Rhea-N00154965-66-67-EB-LXTT.jpgCraterland (an Image-Mosaic by Elisabetta Bonora - Lunexit Team)80 visitenessun commentoMareKromium
|
|
Enceladus-N0016088-114-MF-LXTT.jpgEnceladus (an Image-Mosaic in Natural Colors; credits for the additional process. and color.: Dr Marco Faccin - Lunexit Team)80 visitenessun commentoMareKromium
|
|
Dione_and_Mimas-PIA14619-PCF-LXTT-IPF-1.jpgSo close, and yet so far... (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)80 visiteThe Saturnian moon Mimas peeps out from behind the larger moon Dione in this suggestive view of a so-called "Mutual Event" as it was seen from and recorded by the NASA - Cassini Spacecraft. Mimas (which is approx. 246 miles - such as a little less than 396 Km - across) is near the bottom center of the image. This view looks toward the anti-Saturn side of Dione (which is about 698 miles - such as approx 1123,3 Km - across). North on Dione is up and rotated 20° to the right.
The image was taken in Visible Light with the NASA - Cassini Spacecraft Narrow-Angle Camera on December 12, 2011, at a distance of approximately 377.000 miles (such as about 606.721 Km) from Mimas and approximately 56.000 miles (such as a little more than 90.000 Km) from Dione, at a Sun-Dione-Cassini Spacecraft , or Phase, Angle of 42°. Image scale is 1773 feet (such as about 540,41 meters) per pixel on Dione.
This frame (which is a crop from an Original NASA - Cassini Spacecraft b/w image published on the NASA - Planetary Photojournal with the ID n. PIA 14619) has been additionally processed and then colorized in Absolute Natural Colors (such as the colors that a human eye would actually perceive if someone were onboard the NASA - Cassini Spacecraft and then looked outside, towards the Saturnian moons Dione and Mimas), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team. Different colors, as well as different shades of the same color, mean, among others, the existence of different Elements present on the Surface of Dione and Mimas, each having a different Albedo (---> Reflectivity) and Chemical Composition.MareKromium
|
|
Atlas, Pandora and Janus-PIA06522_modest.jpgSaturn's Rings + Atlas, Pandora, Prometheus and Janus79 visiteCaption NASA originale: "Saturn hosts its own miniature solar system with an entourage of more than 30 moons. This image shows Saturn's "A" and "F" Rings, along with three of the moons that orbit close to them. From innermost to outermost, tiny Atlas (32 Km across) orbits just outside of the bright "A-Ring" and is seen above center in this view. Prometheus (102 Km across) is visible near lower right. Prometheus and its smaller cohort, Pandora, shepherd the thin, knotted F-Ring. Janus (181 Km across) can be seen near lower left. Janus shares its orbit with the moon Epimetheus. Density waves due to Janus cause some of the bright bands seen in the A-Ring in this image. Prometheus and Atlas also produce waves in the rings, but their wave regions are too narrow to be seen here. The planet's shadow stretches all the way across the main rings in this view. The shadow has an oval shape now but over the next few years it will become more rectangular as the planet orbits the Sun and the angle Sunlight-Rings decreases.
|
|
Dione-PIA07745-2.jpgDione's horizon - HD (2)79 visitenessun commento
|
|
Dione-PIA07745-3.jpgDione's horizon - HD (3)79 visitenessun commento
|
|
Saturn-PIA08923.jpgFrom South to North79 visiteCaption NASA:"The Cassini spacecraft gazes upward at the face of giant Saturn, seeing beyond the Equator to where ring shadows fall across the bluish Northern Latitudes.
This extreme southern view looks northward from about 58° below the Ring-Plane.
Images taken using red, green and blue spectral filters were combined to create this natural color view. The images were obtained with the Cassini spacecraft wide-angle camera on Feb. 1, 2007 at a distance of approx. 940.000 Km (abput 584.000 miles) from Saturn.
Image scale is roughly 106 Km (about 66 miles) per pixel".MareKromium
|
|
Enceladus-MF2-LXTT.jpgThe "Head" of Enceladus (an Image-Mosaic in Absolute Natural Colors; credits for the additional process. and color.: Dr Marco Faccin - Lunexit Team)79 visitenessun commentoMareKromium
|
|
AE-The Sky of Saturn after the £rd Streak-N00014483.jpgSaturn's Sky right after the 3rd "Streak" - N0001448378 visite...dovremmo almeno tentare di avanzare un'ipotesi in ordine alla possibile origine del fenomeno. Di certo si può dire che non si tratta di una traccia lasciata dai raggi cosmici e non sembra proprio trattarsi di una meteora. In realtà un elemento che potrebbe essere decisivo per capire c'è. Quale? Ma è proprio il "tipo" di traccia lasciata sull'immagine (una traccia "a scalini") che ci aiuta! Noi ci fermiamo qui. Voi, se volete, potete provare ad elaborare l'immagine e poi farci sapere che cosa ne pensate.
|
|
| 2245 immagini su 188 pagina(e) |
 |
|
|
|
|
22 | |
|
|
|
|
