Mars through the eyes of Soujourner-Pathfinder
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SOU-SOL008-81446_full.jpg"Monster-Pan" in 3-D (18) - Sol 854 visitenessun commento
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SOU-SOL008-81447_full.jpg"Monster-Pan" in 3-D (19) - Sol 854 visitenessun commento
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SOU-SOL008-81448_full.jpg"Monster-Pan" in 3-D (20) - Sol 854 visitenessun commento
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SOU-SOL008-81449_full.jpg"Monster-Pan" in 3-D (21) - Sol 853 visitenessun commento
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SOU-SOL008-81450_full.jpg"Monster-Pan" in 3-D (22) - Sol 854 visitenessun commento
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SOU-SOL008-PIA01004.jpgDeflated Airbags and Skyline - Soles 8, 9 and 10 (Natural Colors; credits: NASA/JPL)121 visiteCaption NASA originale:"This is a sub-section of the geometrically improved and color enhanced version of the 360° panorama known as the "Gallery Pan", the first contiguous, uniform panorama taken by the Imager for Mars Pathfinder (IMP) over the course of Soles 8, 9 and 10. Different regions were imaged at different times over the 3 Martian days to acquire consistent lighting and shadow conditions for all areas of the panorama.
The IMP is a stereo imaging system that, in its fully deployed configuration, stands 1,8 mt above the Martian surface and has a resolution of 2 mm at a range of 2 mt. In this geometrically improved version of the panorama, distortion due to a 2,5° tilt in the IMP camera mast has been removed, effectively flattening the horizon. The IMP has color capability provided by 24 selectable filters -- twelve filters per "eye". Its red, green, and blue filters were used to take this image. The color was digitally balanced according to the color transmittance capability of a high-resolution TV at the Jet Propulsion Laboratory (JPL), and is dependent on that device. In this color enhanced version of the panorama, detail in surface features are brought out via changes to saturation and intensity, holding the original hue constant. A threshold was applied to avoid changes to the sky".
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SOU-SOL008-pan_segment3-2.jpgDeflated Airbags and Skyline - Soles 8, 9 and 10 (Natural Colors; credits for the additional process. and color.: Dr Gianluigi Barca Lunexit Team)55 visitenessun commentoMareKromium
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SOU-SOL008.jpgMars Panorama from Pathfinder (Carl Sagan Station) - Soles 8, 9 and 10 (Enhanced Natural Colors - top image - and Natural Colors - bottom image -; credits: NASA/JPL-Caltech)97 visiteAncora un bel panorama di Marte, così come lo vedremmo se fossimo seduti accanto alla Sonda Soujourner. Le considerazioni da svolgere sono le solite. In questo caso Vi offriamo il commento originale al frame: "Each of these panoramic views is a controlled mosaic of approximately 300 IMP images covering 360° of azimuth and elevations from approximately 4° above the horizon to 45° below it. Simultaneous adjustment of orientations of all images has been performed to minimize discontinuities between images. Mosaics have been highpass-filtered and contrast-enhanced to improve discrimination of details without distorting relative colors overall.
TOP IMAGE: Enhanced true-color image created from the "Gallery Pan" sequence, acquired on Soles 8-10 so that Local Solar Time (LST) increases nearly continuously from about 10:00 (right edge) up to about 12:00 (left). BOTTOM IMAGE: Anaglyphic stereoimage created from the "Monster Pan" sequence, acquired in 4 sections between about 8:30 and 15:00 LST on Sol 3".
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SOU-SOL010-Twin_Peaks-TC-PIA01546_modest.jpgTwin Peaks - Sol 10 (True Colors; credits: NASA/JPL)213 visiteCaption NASA:"The True Colors of Mars based upon three filters with the sky set to aluminance of 60. The color of the Pathfinder Landing Site is yellowish brown with only subtle variations. These colors are identical to the measured colors of the Viking Landing Sites reported by Huck et al. [1977]. This image was taken near local noon (12:00 M.L.T.) on Sol 10. A description of the techniques used to generate this color image from IMP data can be found in Maki et al., 1999".
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SOU-SOL011-marspath_sunset.jpgMartian Sunset... - Sol 1183 visiteColori veri, quasi-veri o falsi?
Uno scorcio bellissimo, comunque, di un Cielo Marziano che si tinge di un intenso color rosso-fuoco, nelle ore del tardo pomeriggio.
Caption NASA originale:"This highly color-enhanced and horizontally stretched image shows layering of dust in the Martian Atmosphere brought out by the Martian Sunset of Sol 11 at the Pathfinder Landing Site. The dust is distributed high in the martian atmosphere, causing the sky to remain light over an hour after Sunset. The point of Sunset is off the right side of the frame".
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SOU-SOL011-marspath_sunset3.jpgThree moments of the Sunset - Sol 1176 visiteCrepuscolo Marziano, in tre momenti distanti solo pochi secondi l'uno dall'altro.
Colori naturali, ma "enhanced" (diciamo "forzati" nelle loro sfumature essenziali).
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SOU-SOL011-marspath_sunset4.jpgClouds in the Martian sunset (True Colors; credits: NASA/JPL)117 visiteUn bellissimo e "veritiero" (a quanto dicono alla NASA) tramonto Marziano a colori. Questa la caption originale all'immagine, ripresa dalla Sonda Pathfinder nel 1997: "You've had a hard day rolling past Martian rocks, so now just relax your APXS and enjoy the Martian Sunset. The above pictures taken by Mars Pathfinder highlight how clouds vary during the end of a Martian day. The Atmosphere on Mars is much thinner than on Earth and dominated by CO2 rather than Nitrogen. Clouds on Mars can be Water or Carbon Dioxide based, depending on conditions, whereas Earth's clouds are all water based. At night the temperature at Sagan Memorial Station will dip from about -15 degrees Celsius (+4 Fahrenheit) to -77 degrees Celsius (-107 Fahrenheit). Temperatures only this cold won't bother Sojourner".
Dati interessanti, senza dubbio. Voi che ne dite? I colori Vi sembrano veritieri?
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