| Piú votate - Titan: The "Foggy" Moon |
Titan-PIA09846-PCF-LXTT-IPF.jpgTitanian Clouds and Surface Features (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)70 visiteA bright streak of whitish Clouds graces the Northern Skies of the Saturnian moon Titan and this was the second time that the NASA - Cassini Spacecraft's imaging cameras spotted clouds at apporx. 60° of North Latitude (the previous occasion occurred during the observations that were carried out in the month of February of the AD 2007: observations which also led the cameras of the Spacecraft to spot the Dark Lakes - likely filled by Liquid Hydrocarbons - that cover much of the Northern Regions of this fascinating moon). The almost circular, and approx. 400-Kilometer wide Impact Crater Menrva can be seen near center, a little to the left of the Terminator. North on Titan (which, we remind you, is approx. 5150 Km - such about 3200 miles across) is up and rotated 26° to the right.
The image was taken with the NASA - Cassini Spacecraft Narrow-Angle Camera on January 20, 2008, using a combination of Spectral Filters sensitive to Wavelengths of Polarized InfraRed Light centered at 938 and 746 nanometers. The view was acquired at a distance of approximately 1,3 MKM (---> Million KiloMeters), such as about 800.000 miles from Titan and at a Sun-Titan-Spacecraft, or Phase, Angle of 58°. Image scale is roughly 8 Km (a little more than 5 miles) per pixel. However, it has to be noted that, due to the scattering of light that is caused by the Titanian Hazy Atmosphere, the size of the Surface Features that can be seen and resolved, is a few times larger than the actual (and aforementioned) pixel scale.
This frame (which is an Original NASA - Cassini Spacecraft image published on the NASA - Planetary Photojournal with the ID n. PIA 09846) 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 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 and Surface - where visible - of Titan, each having a different Albedo (---> Reflectivity) and Chemical Composition.
MareKromium
(3 voti)
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Titan-MF-EB-LXTT-01.jpgNot an Aurora! (False Colors; credits for the additional process. and color.: Elisabetta Bonora and Marco Faccin - Lunar Explorer Italia/IPF)75 visiteDall'ingrandimento del dettaglio controverso (frame superiore) non è possibile ricavare alcuna certezza, se non che il Fenomeno (probabilmente) Atmosferico che interessa le estreme Regioni Sud-Polari di Titano è soggetto a rapidi cambiamenti nel tempo. La sua forma, poi (decisamente irregolare), ci spinge a preferire - diremmo in via definitiva - l'ipotesi transitoria e meteorologica per quanto attiene la natura del Fenomeno in questione (i.e.: nuvola, super-nuvola, nuvola semi-permanente o colonnare da post-impatto che sia).MareKromium
(3 voti)
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Titan-N00188978-86-MF-EB-LXTT-IPF-1.jpgPossible Aurora at Titan (Superdefinition; credits for the additional process. and color.: Elisabetta Bonora and Marco Faccin/Lunexit Team)80 visitenessun commentoMareKromium
(3 voti)
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Titan-PIA08167-PCF-LXTT.jpgTitan's foggy Northern "Cap" (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)124 visiteCaption NASA:"The complex and dynamic Atmosphere of Titan displays multiple Haze Layers near the North Pole in this view, which also provides an excellent look at the detached Stratospheric Haze Layer that surrounds the moon at lower Latitudes.
North on Titan is up and rotated 20° to the left.
The image was taken with the Cassini Spacecraft narrow-angle camera on March 16, 2006, using a filter sensitive to wavelengths of UltraViolet Light centered at 338 nanometers. The image was obtained at a distance of approx. 1,2 MKM (about 800.000 miles) from Titan and at a Sun-Titan-Spacecraft, or Phase, Angle of 68°. Image scale is approx. 7 Km (such as about 5 miles) per pixel". MareKromium
(3 voti)
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Titan_and_Saturn-PIA14909.jpgTitan and Saturn (Natural Colors; credits: NASA/JPL-Caltech/Space Science Institute)97 visiteCaption NASA:"The colorful globe of Saturn's largest moon, Titan, passes in front of the Planet and its Rings in this True Color snapshot from NASA's Cassini Spacecraft.
The North Polar "Hood" can be seen on Titan and appears as a detached layer at its top. This view looks toward the Northern, sunlit side of the Rings from just above the Ring-Plane.
Images taken using red, green and blue spectral filters were combined to create this Natural Color view. The image was obtained with the Cassini Spacecraft narrow-angle camera on May 21, 2011, at a distance of approx. 1,4 MMs (about 2,3 MKM) from Titan. Image scale is roughly 9 miles (apèprox. 14 Km) per pixel on Titan".MareKromium
(3 voti)
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Titan_and_Dione-PIA14912.jpgTitan and Dione (Natural Colors; credits: NASA/JPL-Caltech/Space Science Institute)142 visiteCaption NASA:"Saturn's largest moon, Titan, appears deceptively small paired here with Dione, Saturn's third-largest moon, in this view from NASA's Cassini Spacecraft. Titan (which is approx. 3200 miles or about 5150 Km across) is much farther from the Spacecraft than Dione (that, on its side, is approx. 698 miles or about 1123 KM across) is in this view. The view was captured at a distance of approx. 684.000 miles (such as about 1,1 MKM) from Titan but only about 85.000 miles (such as approx. 136.000 Km) from Dione.
Titan appears in its True Colors, but it has been brightened by a factor of about 1,6 relative to Dione. This view looks toward the Saturn-facing side of Titan and the area between the Saturn-facing side and Leading Hemisphere of Dione. North is up on both moons.
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 Nov. 6, 2011. Scale in the original image was roughly 5 miles (such as approx. 8 Km) per pixel on Dione and roughly 41 miles (about 66 Km) per pixel on Titan. The image has been magnified by a factor of 1,5 and contrast-enhanced to aid visibility".MareKromium
(3 voti)
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Titan-Clouds-PIA06157.jpgTitanian Clouds (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)180 visiteCaption NASA originale:"The Clouds seen here are at about 38° South Latitude on Titan. The Clouds across the middle of the frame extend about 250 Km (approx. 155 miles). The image scale is about 0,6 Km (approx. 0,4 miles) per pixel". MareKromium
(3 voti)
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Titan-Regions-Belet_Region-PIA14571-PCF-LXTT.jpgBelet Region (Enhanced Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)124 visiteCaption NASA:"The Cassini Spacecraft peers down through the hazy Atmosphere of Titan to view the Dark Region called "Belet". This image was captured using a spectral filter sensitive to wavelengths of Near-InfraRed Light centered at 938 nanometers. The large Region called Belet has a low albedo, meaning it reflects little light. This view looks toward the Trailing Hemisphere of Titan. North is up.
The image was taken with the Cassini Spacecraft narrow-angle camera on June 23, 2011. The view was obtained at a distance of approx. 1,6 MKM (such as about 990.000 miles) from Titan and at a Phase Angle of 14°. Image scale is roughly 9 Km (approx. 5,589 miles) per pixel".MareKromium
(3 voti)
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Titan-PIA12817-PCF-LXTT.jpgTitanian "Arrow-shaped Storm" (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)198 visiteCaption NASA:"A huge arrow-shaped Storm blows across the Equatorial Regions of Titan in this image from NASA's Cassini Spacecraft, chronicling the Seasonal Weather Changes on Saturn's largest moon.
This Storm created large effects in the form of dark -- likely wet -- areas on the Surface of Titan, as better visible in later images. After this Storm dissipated, Cassini observed significant changes on Titan's Surface at the Southern Boundary of the Dunefield named Belet.
Those changes covered an area of approx. 500.000 square Km (310.500 square miles), or roughly the combined area of Arizona and Utah in the United States.
The part of the Storm that is visible here measures approx. 1200 Km (745,2 miles) in length East-to-West. The wings of the Storm that trail off to the North/West and South/West from the Easternmost point of the storm are each approx. 1500 Km (931,5 miles) long.
Titan's weather has been changing since the August 2009 Equinox, when the Sun lays directly over the Equators of Saturn and its moons, and Storms at low Latitudes are now more common.
This image is a mosaic of two Cassini images. Most of this view is from an image of the storm captured on Sept. 27, 2010. However, because that image's framing cut off the South Polar Region of the Planet, a second image of Titan, taken on July 9, 2010, was used to fill in that portion of the celestial body. This second image was re-projected to the same Viewing Geometry as the first.
Lit Terrain seen here is in the area between the Trailing Hemisphere, which is the side of Titan that faces backward in its orbit around Saturn, and the side of Titan that always faces away from Saturn. North on Titan is up.
The images were taken with the Cassini Spacecraft narrow-angle camera using a spectral filter of Near-InfraRed Light centered at 938 nanometers. The view was acquired at a distance of approx. 1,3 MKM (807.300 miles) from Titan and at a sun-Titan-Spacecraft, or Phase, Angle of 44°.
Image scale is roghly 8 Km (4,968 miles) per pixel".MareKromium
(3 voti)
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Titan_and_Tethys-PIA12745.jpgBrothers in the Night87 visiteCaption NASA:"The Cassini Spacecraft watches a pair of Saturn's moons, showing the hazy orb of giant Titan beyond smaller Tethys.
In the foreground of the image, Ithaca Chasma can be seen running roughly North-South for more than 1000 Km (about 620 miles) on Tethys. Titan's detached, high-altitude Haze Layer and North Polar "Hood" are also visible here.
This view looks toward the Saturn-facing sides of Titan and Tethys.
The image was taken in Visible Green Light with the Cassini Spacecraft narrow-angle camera on Oct. 18, 2010. The view was obtained at a distance of approx. 2,5 MKM (such as about 1,6 MMs) from Titan and at a Sun-Titan-Spacecraft, or Phase, Angle of 55°. The view was obtained at a distance of approx. 1,5 MKM(such as about 930.000 miles) from Tethys and at a Sun-Tethys-Spacecraft, or Phase, Angle of 55°".MareKromium
(3 voti)
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Titan-N00164130-32-EB-LXTT.jpgOn the Limb... (Superdefinition and True Colors; credits for the additional process. and color.: Elisabetta Bonora - Lunexit Team)85 visitenessun commentoMareKromium
(3 voti)
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Titan-Clouds-N00163811-EB-PCF-LXTT.jpgExtremely bright Cloud-formations in Titan's Upper Atmosphere (Natural Colors; credits for the additional process. and color.: Elisabetta Bonora and Paolo C. Fienga - Lunexit Team)107 visitenessun commentoMareKromium
(3 voti)
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