| Piú votate - Titan: The "Foggy" Moon |
Titan-N00200168-752-EB-MF-LXTT-IPF.jpgColourful Titan (Superdefinition and Extremely Enhanced Natural Colors; credits for the additional process. and color.: Elisabetta Bonora and Marco Faccin/Lunar Explorer Italia/Italian Planetary Foundation) 67 visitenessun commentoMareKromium
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Titan-PIA14634-PCF-LXTT-IPF.jpgSeasonal or Permanent? (Absolute Natural Colors; credits for the additional process. and color.: Dr Gianluigi Barca/Lunar Explorer Italia/Italian Planetary Foundation)80 visiteEven though it is still nighttime at the South Pole, the Vortex, which swirls high in the Sky of Titan, is already illuminated by the Sunlight and stands out (relatively) brightly against the other - and possible Water-Ice - Clouds that can be seen to the left of the Terminator (still near the South Polar Regions of Titan, but on the daytime side of this complex and fascinating Saturnian moon). The NASA - Cassini Spacecraft, as you have noticed, keeps monitoring very carefully the development of this South Polar Vortex (a true Titanian Oddity anyway), so to help Scientists and Researchers from all over the World to better understand the (perhaps just) seasonal changes that occur in the Atmosphere of Titan.
This outstanding view looks toward the Trailing Hemisphere of Titan; North is up and rotated 9° to the left. The image was taken with the NASA - Cassini Spacecraft Narrow-Angle Camera on Aug. 31, 2012, using a Spectral Filter sensitive to Wavelengths of Near-InfraRed Light, centered at 938 nanometers. The view was acquired at a distance of approximately 750.000 miles (such as about 1,2 Million KiloMeters - MKM) from Titan and at a Sun-Titan-Spacecraft, or Phase, Angle of 74°. Image scale is about 4 miles (such as approx. 6,4 Km) 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 14634) has been additionally processed and then colorized, according to an informed speculation carried out by Dr Paolo C. Fienga (LXTT-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 Titan), 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 in the Atmosphere of Titan, each having a different Albedo (---> Reflectivity) and Chemical Composition.MareKromium
(2 voti)
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Titan-PIA14626-PCF-LXTT-IPF.jpgAt Titan's Poles (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia/Italian Planetary Foundation) 71 visiteTitan's South Polar Vortex seems to "float" above the moon's South Pole in this NASA - Cassini Spacecraft view. The Vortex, which is a mass of gases swirling around the South Pole, high in the moon's Atmosphere, can be easily seen in the lower right of this view. On the other hand, Titan's Northern "Hood" is also well visible, since it covers almost all the Northern Regions of this always mysterious and fascinating Saturnian moon. This view looks toward the Leading Hemisphere of Titan (which is approx. 3200 miles, or about 5150 kilometers across). North on Titan is up and rotated 25° to the left.
The image was taken with the NASA - Cassini Spacecraft Narrow-Angle Camera on July 6, 2012, using a Spectral Filter sensitive to wavelengths of Near-InfraRed light, centered at 889 nanometers. The view was acquired at a distance of approximately 1,7 Million Miles (such as about 2,8 Million Kilometers) from Titan and at a Sun-Titan-Spacecraft, or Phase, Angle of 86°. Scale in the original image was about 11 miles (such as approx. 17 Km) per pixel. Afterwards, the image has been contrast enhanced and magnified, so to improve the visibility of the most interesting Features existing in the Titanian Atmosphere.
This picture (which is an Original NASA - Cassini Spacecraft frame published on the NASA - Planetary Photojournal with the ID n. PIA 14626) has been additionally processed and then colorized, according to an informed speculation carried out by Dr Paolo C. Fienga (LXTT-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 Titan), 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 in the Atmosphere of Titan, each having a different Albedo (---> Reflectivity) and Chemical Composition.MareKromium
(2 voti)
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Titan-N00188978-86-MF-EB-LXTT-IPF-2.jpgPossible Aurora at Titan (Superdefinition and Absolute Natural Colors; credits for the additional process. and color.: Elisabetta Bonora and Marco Faccin/Lunexit Team)83 visitenessun commentoMareKromium
(2 voti)
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Titan-PIA14913-0.jpgThe South Polar Atmosphere of Titan (CTX Frame - Natural Colors; credits: NASA/JPL-Caltech/Space Science Institute)130 visiteCaption NASA:"These views from NASA's Cassini Spacecraft look toward the South Polar Regions of Saturn's largest moon, Titan, and show a "Depression" within the moon's Orange and Blue Haze Layers visible near the South Pole. The EDM (close-up) view of these features was captured with the narrow-angle camera.
Titan's High Altitude Haze Layer appears Blue here whereas the Main Atmospheric Haze is orange. The difference in color could be due to particle size of the Haze. The Blue Haze likely consists of smaller particles than the ones forming the Orange Haze. The "Depressed" or "Attenuated" Layer appears in the Transition Area between the Orange and Blue Hazes.
Images taken using red, green and blue spectral filters were combined to create this Natural Color view. The images were obtained on Sept. 11, 2011 at a distance of approximately 83.000 miles (about 134.000 Km) from Titan. Image scale is 2581 feet (787 meters) per pixel".MareKromium
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Titan-PIA07542-PCF-LXTT.jpgTitan (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)164 visitenessun commentoMareKromium
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Titan-PIA06139-PCF-LXTT-1.jpgTitan (Enhanced Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)184 visitenessun commentoMareKromium
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Titan-PIA14115.jpgTitan's Haze is going down...82 visiteCaption NASA:"The change in Titan's Haze Layer is illustrated in this figure, derived from data obtained by NASA's Cassini Spacecraft. The picture of Titan in panel "a" was taken on May, 3, 2006, while the picture in panel "b" was taken on April, 2, 2010, several months after Titan's Equinox in August of 2009.
The geometries and Solar Illumination in both images are similar, though Titan's North Pole is at about the one o'clock position (32°) from vertical in panel "a" and nearly vertical in panel "b".
Pictures "c" and "d" magnify the outer regions and show the difference in altitude of the Haze Layer (near 500 Km in "c" and near 380 Km in "d")".MareKromium
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Titan-PIA12764.jpgEthereal Ring (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)145 visiteCaption NASA:"The Cassini Spacecraft looks toward the Dark Side of Saturn's largest moon and captures the halo-like ring produced by Sunlight scattering through the periphery of Titan's Atmosphere. A detached, high-altitude Global Haze Layer encircles Titan. This view looks toward the Trailing Hemisphere of Titan (approx. 5150 Km, or 3198,15 miles across). North on Titan is up.
The image was taken with the Cassini Spacecraft narrow-angle camera on Nov. 26, 2010 using a spectral filter sensitive to wavelengths of UltraViolet Light centered at 338 nanometers. The view was obtained at a distance of approx. 1,9 MKM (such as about 1,179 MMs) from Titan and at a Sun-Titan-Spacecraft, or Phase, Angle of 154°.
Image scale is roughly 12 Km (7,452 miles) per pixel".MareKromium
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Titan-Clouds-Equatorial_Clouds-PIA12810.jpgTitan's Equatorial Clouds 150 visiteCaption NASA:"NASA's Cassini Spacecraft chronicles the change of Seasons as it captures Clouds concentrated near the Equator of Saturn's largest moon, Titan.
Methane Clouds in the Troposphere, the lowest part of the Atmosphere, appear white here and are mostly near Titan's Equator. The darkest areas are Surface Features that have a low albedo, meaning they do not reflect much light.
Cassini observations of Clouds like these provide evidence of a seasonal shift of Titan's weather systems to low latitudes following the August 2009 Equinox in the Saturnian System (during Equinox, the Sun lies directly over the Equator (see PIA11667 to learn how the Sun's illumination of the Saturnian System changed during the Equinox transition to Spring in the Northern Hemispheres and to Fall in the Southern Hemispheres of the Planet and its moons).
In 2004, during Titan's late Southern Summer, extensive Cloud Systems were common in Titan's South Polar Region (see PIA06110, PIA06124 and PIA06241). Since 2005, Southern Polar Systems have been observed infrequently, and one year after the Equinox, extensive near-equatorial Clouds have been seen.
This image was taken on Oct. 18, 2010, a little more than one Earth year after the Saturnian Equinox, which happens once in roughly 15 Earth years.
The cloud patterns observed from late Southern Summer to early Southern Fall on Titan suggest that Titan's Global Atmospheric Circulation is influenced by both the Atmosphere and the Surface. The temperature of the Surface responds more rapidly to changes in illumination than does the thick Atmosphere. Outbreaks such as the Clouds seen here may be the Titan equivalent of what creates the Earth's tropical rainforest climates, even though the delayed reaction to the change of seasons and the apparently sudden shift is more reminiscent of the behavior over Earth's tropical oceans than over tropical land areas.
A few clouds can be seen in Titan's Southern Latitudes here and some clouds are also visible in the high Northern Latitudes.
This view looks toward the Saturn-facing side of Titan (approx. 5150 Km or 3198,15 miles across). North is up. The image appears slightly grainy because it was re-projected to a scale of about 6 Km (3,726 miles) per pixel. Scale in the original image was approx. 15 Km (9,315 miles) per pixel.
This view consists of an average of three images taken using a filter sensitive to Near-InfraRed Light centered at 938 nanometers, which allows for detection of Titan's Surface and Lower Atmosphere, plus an image taken using a filter sensitive to Visible Light centered at 619 nanometers.
The images were taken with the Cassini spacecraft's narrow-angle camera at a distance of approx. 2,5 MKM (1.552.500 MMs) from Titan and at a Sun-Titan-Spacecraft, or Phase, Angle of 56°".MareKromium
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Titan-Clouds-PIA12813.jpgTitanian Clouds63 visiteMareKromium
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Titan-Clouds-Rain_Clouds-PIA12818-00.jpgTitanian "Deluge"109 visitenessun commentoMareKromium
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