| Piú viste - Titan: The "Foggy" Moon |
Titan-PIA09833-02.jpgTitan, from 213.000 Km (3 - natural colors; credits: Lunexit)82 visitenessun commentoMareKromium
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Titan-Regions-Senkyo_and_Aaru_Region-PIA10565.jpgSenkyo and Aaru Region81 visiteCaption NASA:"Named for other-worldly Paradises, the dark regions of Senkyo and Aaru comprise the center of this image of Saturn's moon Titan. The Egyptian fields of Aaru were Paradise for the god Osiris. This side of Titan, which always faces Saturn, is on the opposite side of the moon from Shangri-La and Adiri, the home to the Huygens probe.
The craft touched down on the border between the lowland dunes of Shangri-La and the higher terrains of Adiri. Like Senkyo and Aaru, these Regions' namesakes reflect heavenly aspirations. North is up in this image.
Senkyo is the Equatorial Region to the right of the center of the image. Aaru is above Senkyo.
The image was taken with the Cassini Spacecraft narrow-angle camera on Dec. 12, 2008 using a spectral filter sensitive to wavelengths of infrared light centered at 938 nanometers.The view was acquired at a distance of approx. 2,4 MKM (such as about 1,5 MMs) from Titan and at a Phase Angle of 35°.
Image scale is roughly 14 Km (about 9 miles) per pixel".MareKromium
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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)81 visitenessun commentoMareKromium
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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)81 visitenessun commentoMareKromium
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Titan-PIA10514.jpgThe "Foggy" Moon (IR Light - possible True Colors; credits: Lunexit)80 visiteCaption NASA:"The Cassini Spacecraft looks through Titan's thick atmosphere to reveal bright and dark terrains on the Saturn-facing Side of the Planet's largest moon. North is up.
The image was taken with the Cassini Spacecraft narrow-angle camera on Oct. 11, 2008 using a spectral filter sensitive to wavelengths of IR Light centered at 938 nanometers. The view was obtained at a distance of approx. 2,2 MKM (about 1,3 MMs) from Titan and at a Sun-Titan-Spacecraft, or Phase, Angle of 10°.
Image scale is roughly 13 Km (about 8 miles) per pixel".MareKromium
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Titan-PIA14115.jpgTitan's Haze is going down...80 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-PIA17151-PCF-LXTT-IPF.jpgTitanian Restlessness (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)79 visiteTitan's restless Upper Atmosphere puts on a display with the "detached" Haze to the North (---> the so-called "North Polar Hood" - top of image) and the Polar Vortex to the South.
This view looks toward the Saturn-facing Hemisphere of Titan; North is up and rotated 24° to the left. The image was taken with the NASA - Cassini Spacecraft Narrow-Angle Camera on August 20, 2013 using a Spectral Filter sensitive to Wavelengths of Near-InfraRed Light centered at 889 nanometers. The view was obtained at a distance of approximately 1,6 Million Miles (such as a little less than 2,575 Million KiloMeters) from Titan; the image scale is roughly 9 miles (such as approx. 14,484 Km) per pixel.
This frame (which is an Original NASA - CASSINI Spacecraft's b/w and NON Map-Projected image published on the NASA - Planetary Photojournal with the ID n. PIA 17151) has been additionally processed, contrast enhanced, magnified to aid the visibility of the details, Gamma corrected and then colorized - according to an educated guess (or, if you wish, an informed speculation) carried out by Dr Paolo C. Fienga - 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 other things, the existence of different Elements (Gases) present in the Atmosphere of Titan, each having a different Albedo (---> Reflectivity) and Chemical Composition.
Note: it is possible (but we, as IPF, have no way to be one-hundred-percent sure of such a circumstance), that the actual luminosity of Titan - as it is in this frame - would appear, to an average human eye, a little bit lower than it has been shown (or, better yet: interpreted) here.MareKromium
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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)78 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)77 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
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Titan-Volcano-00-PIA07961.jpgThe Titanian Volcano (1)76 visiteCaption NASA originale:"On Oct. 26, 2004, the Cassini spacecraft flew over Titan at less than 1.200 Km at closest approach. Cassini acquired several infrared images with spatial resolution ranging from a few tens of Km to 2 Km per pixel. The Visual and Infrared Mapping Spectrometer took images from visible wavelengths to the 5,1 micron wvlgts. This figure shows the mosaic obtained at the 2,03 micron wvlgt - observations are centered on the hemisphere of Titan that points away from Saturn. The left (inset) HR image is 30 Km per pixel. It shows the site where the ESA's Huygens probe successfully landed on Jan. 14, 2005. The right inset shows a circular feature that scientists think is a volcano, which may be responsible for replenishing Titan's methane atmosphere".
Nota: la notizia viene inserita nel corpo del testo, silenziosamente, come se si trattasse di un fatto marginale nel quadro di una notizia irrilevante. Ma guardate e leggete i frames successivi...
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Titan-W00074172-79-CB3Filter-MF-EB-LXTT-IPF.jpgFull Titan (Superdefinition and Enhanced Natural Colors; credits for the additional process. and color.: Elisabetta Bonora and Marco Faccin/Lunexit Team)76 visitenessun commentoMareKromium
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Titan-MF-EB-LXTT-00.jpgNot an Aurora! (Extremely Enhanced Natural Colors; credits for the additional process. and color.: Elisabetta Bonora and Marco Faccin - Lunar Explorer Italia/IPF)75 visiteL'ipotesi "Aurorale" del bizzarro Fenomeno occorso alle estreme Latitudini Sud di Titano è tramontata. Nuove ipotesi? Diciamo questo: accanto a quelle "classiche" (e cioè 1) nube alta di gas "pesanti" e 2) "nuvola colonnare" derivante da un impatto meteorico) ce ne potrebbe essere un'altra. Si potrebbe trattare, a nostro parere, di un Fenomeno Meteorologico Ciclico, collegato al verificarsi di una specifica configurazione spaziale tra Sole, Saturno e Titano. Nulla di esotico, sia chiaro: solo una particolare configurazione di "fase" che, da un lato, consente la creazione "fisica", su Titano, di una formazione nuvolosa semi-permanente e, dall'altro, consente la individuazione "ottica" della nuvola stessa (ovviamente a condizione di avere uno strumento "in loco" o quasi...). Pensiamoci sopra...MareKromium
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