| Piú votate - Titan: The "Foggy" Moon |
Titan-W00049900.jpgLost in the Space of Saturn... (natural colors; credits: Lunexit)56 visiteTitano: il disco, appena percettibile, splende di un leggero color giallo. Siamo a circa 1,8 MKM dalla "Luna Nebbiosa".MareKromium
(3 voti)
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Titan-PIA09858.jpgTitan approaches Saturn (natural colors; credits: NASA)86 visiteCaption NASA:"Swathed in its thick blanket of atmosphere, frigid Titan approaches the brilliant limb of Saturn. This view was obtained just minutes after the wide-angle view, "Father and Son".
Images taken using red, green and blue spectral filters were combined to create this natural color view. The images were acquired with the Cassini spacecraft narrow-angle camera on Jan. 29, 2008 at a distance of approx. 2,3 MKM (such as about 1,4 MMs) from Titan.
Image scale is roughly 14 Km (about 8 miles) per pixel".MareKromium
(3 voti)
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Titan-PIA09007.jpg...Ring of Fire... (natural colors; elab. Lunexit)54 visiteCaption NASA:"This celestial circle of light is produced by the glow of Sunlight scattered through the periphery of Titan's atmosphere as the Sun is occulted by Titan. It is the sum of all the sunsets and sunrises taking place on Titan at once.
The intriguing structure of Titan's North Polar "hood" can be seen at upper left.
A thin, detached, high-altitude global haze layer encircles the moon.
North on Titan is up and rotated 23° to the left.
The image was taken in visible blue light with the Cassini spacecraft wide-angle camera on June 29, 2007. The view was obtained at a distance of approx. 210.000 Km (about 131.000 miles) from Titan and at a Sun-Titan-spacecraft, or phase, angle of 167°.
Image scale is roughly 12 Km (about 8 miles) per pixel".MareKromium
(3 voti)
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Titan-N00084802.jpgInterpreting Titan (2)55 visitenessun commentoMareKromium
(3 voti)
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Titan-North_Polar_Regions-PIA09171.jpgStrong turbulence over Titan's North Pole55 visiteCaption NASA:"Cassini's VIMS (Visual and Infrared Mapping Spectrometer) has imaged a huge cloud system covering the North Pole of Titan.
This composite image shows the cloud, imaged at a distance of 90.000 Km (about 54.000 miles) during a Dec. 29, 2006, flyby designed to observe the limb of the moon. Cassini's VIMS scanned the limb, revealing this spectacular cloud system.
It covers the North Pole down to a Latitude of 62° North and at all observed Longitudes.
Such a cloud cover was expected, according to the atmospheric circulation models of Titan, but it had never been observed before with such details. The condensates may be the source of liquids that fill the lakes recently discovered by the radar instrument.
This image was color-coded, with blue, green and red at 2, 2,7 and 5 microns, respectively".
(3 voti)
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Titan-Regions-Fensal_and_Aztlan_Region-PIA08352.jpgFensal and Aztlan Region55 visiteAs Cassini continues its reconnoitering flybys of Titan, the imaging science team continues to improve its ability to tease out surface details hidden in the unprocessed images. This mosaic provides the best view yet obtained by Cassini's cameras, showing terrain on the moon's sub-Saturn Hemisphere -- the side of the moon that always faces toward Saturn. This mosaic has better resolution, both in pixel scale and from improved signal-to-noise, compared to previous views of the area.
"Signal-to-noise" is a term scientists use to refer to the amount of meaningful or useful information (signal) in their data versus the amount of background noise. A higher signal-to-noise ratio yields sharper, clearer views of Titan's surface.
The view is centered on terrain in the Fensal-Aztlan region on Titan, at 0,03° South Lat. and 22,18° West Long. The mosaic covers an area 3.500 Km (2.180 miles) North to South and 3.600 Km (2.240 miles) West to East. North is up.
(3 voti)
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Titan-Clouds-White_Clouds-PIA08736.jpgThe "White Clouds" of Titan59 visiteCaption NASA originale:"This image depicts Saturn's moon Titan as seen by the Visual and Infrared Mapping Spectrometer (VIMS) after the closest approach of July 22, 2006 (fly-by n. 16).
The image was generated using the 5 micron wavelength for red, the 2 micron wavelength for green and the 1,2 micron wavelength for blue. The clouds are of the same type seen previously and reported in the journal "Science".
The image shows the clouds spreading out along the 40° South Latitude line.
This image was taken from a distance of about 160.000 Km (roughly 99.000 miles) from Titan".
(3 voti)
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Titan-PIA08219.jpgTitan through the Rings54 visiteCaption NASA originale:"Titan shines beyond the Rings like a brilliant ring of fire, its light gleaming here and there through the gaps in Saturn's magnificent plane of ice. Titan is surrounded by a thick photochemical haze which scatters the Sun's light.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on June 11, 2006 at a distance of approx. 5,3 MKM (about 3,3 MMs) from Titan and at a Sun-Titan-spacecraft, or phase, angle of 158°. Image scale is roughly 32 Km (about 20 miles) per pixel on Titan".
(3 voti)
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Titan-PIA08214.jpgHaze and saturation55 visiteCaption NASA originale:"Sunlight streams through the high-altitude haze layer that extends completely around the giant moon, Titan, in this view of the moon taken by the Cassini spacecraft. Some fine structure can be spotted in the ever-shifting hazes in Titan's Northern Polar reaches to the top.
The distant sky beyond Titan is not empty, but instead is filled in the lower half by the barely visible, immense bulk of Saturn, 1,3 MKM (such as approx. 800.000 miles) beyond. The view is toward the night side of both worlds.
Titan's image is saturated, or over exposed, near the five o'clock position, obscuring the details in the atmosphere.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on June 2, 2006 at a distance of approx. 2,3 MKM (about 1,4 MMs) from Titan and at a Sun-Titan-spacecraft angle of 163°. Image scale is roughly 14 Km (about 9 miles) per pixel on Titan".
(3 voti)
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Titan_and_Rhea-N00062452.jpgObscuring the Sun...55 visiteCaption originale:"N00062452.jpg was taken on June 11, 2006 and received on Earth June 12, 2006. The camera was pointing toward Rhea that, at the time, was approximately 3.619.486 Km away.
The image was taken using the CL1 and CL2 filters".
(3 voti)
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Titan-PIA08188.jpgMellow Yellow...64 visiteCaption NASA originale:"Saturn's largest moon, Titan, peaks out from under the Planet's Rings of ice.
This view looks toward Titan from slightly beneath the Ring-Plane. The dark Encke Gap (325 Km, or 200 miles wide) is visible here, as is the narrow F-Ring.
Images taken using red, green and blue spectral filters were combined to create this natural color view.
The images were taken with the Cassini spacecraft narrow-angle camera on April 28, 2006 at a distance of approximately 1,8 MKM (such as 1,1 MMs) from Titan. Image scale is approx. 11 Km (about 7 miles) per pixel on Titan".
(3 voti)
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Titan-PIA08157.jpgTitan & Epimetheus54 visiteCaption originale:"This poetic scene shows the giant, smog-enshrouded moon Titan behind Saturn's nearly edge-on Rings.
Much smaller Epimetheus (116 Km - or 72 miles - across) is just visible to the left of Titan (5.150 Km - or 3.200 - miles across).
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on March 9, 2006, at a distance of approx. 4,1 MKM (such as about 2,5 MMs) from Titan. The image scale is 25 Km (about 16 miles) per pixel on Titan. The brightness of Epimetheus was enhanced for visibility purposes".
(3 voti)
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