| Piú viste - Mars through the eyes of Soujourner-Pathfinder |
SOU-SOL008-PIA01004.jpgDeflated Airbags and Skyline - Soles 8, 9 and 10 (Natural Colors; credits: NASA/JPL)125 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-SOL011-marspath_sunset4.jpgClouds in the Martian sunset (True Colors; credits: NASA/JPL)121 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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SOU-SOL001-1-Pathfinder-LandingSite-Viking1-01.jpgThe Pathfinder Landing Site, from Viking 1 (2)114 visiteMosaic of Viking Orbiter images illustrating the location of the Pathfinder Lander (approx. 19,17° North Lat. and 33,21° West Long in the USGS ref. frame) with respect to surface features. Prominent features on the horizon include North Knob, Southeast Knob, Far Knob, Twin Peaks and Big Crater. Two small craters visible in the Orbiter and Lander views (Little Crater and Rimshot Crater) lie on the NW outer flank of the rim of Big Crater. Since the Lander is on the SE-facing flank of a low ridge, very distant features to the South and East are in view, whereas relatively nearby features to the North are partially or completely obscured. Only the tip of North Knob, which appears larger in the Viking orbiter images than the Twin Peaks, projects above the Local Horizon, and a 300-m crater, 1.2 km to the North/East, is completely obscured".
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SOU-SOL005-81095_full.jpgYogi on Mars! - Sol 5112 visiteCaption originale:"In the foreground are the airbags, and to the left are more hypothesized evaportion deposits".
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SOU-SOL002-80828_full.jpgDetails and Features of the Pathfinder - Sol 1111 visiteOriginal caption:"Several prominent features of Mars Pathfinder and surrounding terrain are seen in this image, taken by the Imager for Mars Pathfinder on July 4 (Sol 1), the spacecraft's first day on the Red Planet. Portions of a lander petal are at the lower part of the image. At the left, the mechanism for the high-gain antenna can be seen. The dark area along the right side of the image represents a portion of the low-gain antenna. The radiation calibration target is at the right. The calibration target is made up of a number of materials with well-characterized colors. The known colors of the calibration targets allow scientists to determine the true colors of the rocks and soils of Mars. Three bull's-eye rings provide a wide range of brightness for the camera, similar to a photographer's grayscale chart. In the middle of the bull's-eye is a 5-inch tall post that casts a shadow, which is distorted in this image due to its location with respect to the lander camera. A large rock is located at the near center of the image. Smaller rocks and areas of soil are strewn across the Martian terrain up to the horizon line".
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SOU-SOL004-81006_full.jpgFlat Top - Sol 4108 visiteOriginal caption:"In this image is the rectangular rock dubbed "Flat Top" by Pathfinder scientists. The surface of this rock appears to be covered by dust".
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SOU-SOL039-1~0.jpgPre-dawn clouds (1) - Sol 39108 visiteCaption NASA originale:"These are more wispy blue clouds from Sol 39 as seen by the Imager for Mars Pathfinder. The bright clouds near the bottom are about 10° above the horizon. The clouds are believed to be at an altitude of 10 to 15 Km and are thought to be made of small water ice particles. The picture was taken about 40 minutes before Sunrise".
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SOU-SOL006-backshell-01.jpgThe "Silver-Sphere", near Pathfinder... (extra detail mgnf) - Sol 6108 visiteAllora, che ne dite?
Questo oggetto è lo stesso (da un punto di vista meccanico/costruttivo) che Spirit ha incontrato "sulla via di Bonneville" - e cioè un "rottame spaziale", perso durante le operazioni di landing, oppure, in entrambi i casi, esso è l'evidenza oggettiva di una Presenza Aliena nei pressi del Landing Site?
Oppure questo oggetto è effettivamente la Backshell della Sonda Pathfinder, mentre la Silver Sphere incontrata da Spirit è "qualcos'altro"?
Domande, domande, domande...
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SOU-SOL006-backshell-02.jpgThe "Silver-Sphere", near Pathfinder... (extra detail mgnf) - Sol 6108 visiteNessun commento ulteriore rispetto a quanto riportato sul frame.
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SOU-SOL004-81003_full.jpgEarly steps, early rolls, early pictures... - Sol 4107 visiteOriginal caption:"This is one of the first images taken by one of the three forward-facing rover cameras. It shows the partially deflated airbags and, in the upper right corner, the HGA - High Gain Antenna".
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SOU-SOL050.jpgMars Panorama from Pathfinder (edited) - Sol 50 (Enhanced Natural Colors; credits: NASA/JPL/USGS)106 visiteUna bella veduta panoramica del Landing Site della Sonda Soujourner, corredata dall'indicazione di tutte le "aree di interesse", vicine e lontane. Da notarsi due cose: la prima attiene, come sempre, ai colori del paesaggio (incoerenti rispetto ad altre immagini simili o identiche); la seconda, i "nomi" dati dai Tecnici NASA alla maggior parte delle surface features oggetto di studio. Nomi che, come abbiamo detto in altra Sezione, sembrano essere stati estratti da giornali a fumetti per bambini. Semplificazione e volontà di rendere i dati accessibili a tutti o semplice tentativo di banalizzazione? Non è facile rispondere.
Voi cosa ne pensate?
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SOU-SOL003-81009_full.jpgYogi on Mars! - Sol 3104 visiteOriginal caption:"Yogi, a rock taller than Rover Sojourner, is the subject of this image, taken by the deployed Imager for Mars Pathfinder (IMP) on Sol 3 (but received on Earth during Sol 4). The soil in the foreground will be the location of multiple soil mechanics experiments performed by Sojourner's cleated wheels. Pathfinder scientists will be able to control the force inflicted on the soil beneath the Rover's wheels, giving them insight into the soil's mechanical properties".
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