| Ultimi arrivi - Mars Reconnaissance Orbiter (MRO) |
PSP_010400_2620_RED_abrowse.jpgSample of North Polar Gypsum Dunes (Natural Colors; credits: Lunar Explorer Italia)83 visiteMars Local Time: 14:24 (early afternoon)
Coord. (centered): 81,7° North Lat. and 157,1° East Long.
Spacecraft altitude: 318,6 Km (such as about 199,1 miles)
Original image scale range: 31,9 cm/pixel (with 1 x 1 binning) so objects ~ 96 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 0,1°
Phase Angle: 68,2°
Solar Incidence Angle: 68° (meaning that the Sun is about 22° above the Local Horizon)
Solar Longitude: 141,9° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromiumMar 10, 2009
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PSP_010402_1485_RED_abrowse.jpgSample of Intermediate-Toned Area (Natural Colors; credits: Lunar Explorer Italia)59 visiteMars Local Time: 15:42 (middle afternoon)
Coord. (centered): 31,1° South Lat. and 130,7° East Long.
Spacecraft altitude: 255,9 Km (such as about 159,9 miles)
Original image scale range: 51,2 cm/pixel (with 1 x 1 binning) so objects ~1,54 mt across are resolved
Map projected scale: 50 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 7,6°
Phase Angle: 76,9°
Solar Incidence Angle: 71° (meaning that the Sun is about 19° above the Local Horizon)
Solar Longitude: 142,0° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromiumMar 10, 2009
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ESP_012065_9000_COLOR.JPGDeimos (Natural - but enhanced - Colors; credits: NASA/JPL/Univ. of Arizona)80 visiteHiRISE captured this enhanced-color image of Deimos, the smaller of the two moons of Mars, on 21 February 2009.
Deimos has a smooth surface due to a blanket of fragmental rock or regolith, except for the most recent impact craters. It is a dark, reddish object, very similar to Phobos.
There are subtle color variations — redder in the smoothest areas and less red near fresh impact craters and over ridges or topographic highs (relative to its center of gravity).
These color variations are probably caused by the exposure of surface materials to the space environment, which leads to darkening and reddening. Brighter and less-red surface materials have seen less exposure to space due to recent impacts or downslope movement of regolith.
With an image scale of about 20 mt/pixel, features 60 mt or larger can be discerned.MareKromiumMar 10, 2009
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ESP_012068_9000_COLOR5.JPGDeimos (Natural - but enhanced - Colors; credits: NASA/JPL/Univ. of Arizona)59 visiteThis second image of Deimos was acquired 5 h. and 35' after the first one; so the Sun was to the upper left in the first (ESP_01265_9000) image and to the right in this second one (ESP_01268_9000). Although the viewing geometry is similar in the two images, surface features appear very different due to the changes in illumination.
Nota Lunexit: il concetto sancito dagli Amici di Pasadena nell'ultima riga (...Although the viewing geometry is similar in the two images, surface features appear very different due to the changes in illumination...) è ASSOLUTAMENTE FONDAMENTALE per la corretta visione, comprensione ed analisi di quanto mostrato da immagini orbitali o, comunque, ottenute da notevoli distanze rispetto al luogo/rilievo osservato. MareKromiumMar 10, 2009
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PSP_003538_1885_RED_browse.jpgAres Vallis' Cataract (Natural Colors; credits: Lunar Explorer Italia)59 visiteThis image shows a dry cataract within Ares Vallis. A cataract is a large waterfall where there is a high, steep drop. The presence of this large cataract in Ares Vallis confirms that this channel was carved by water, probably in one or many large catastrophic flooding events.
This feature has many of the same characteristics as the cataracts on Earth associated with the flood that carved the Channelled Scablands in Washington State, including horseshoe-shaped headcuts and longitudinal grooves. These grooves in the lower portion of the image lead up to the cataract, with the water flowing from the south to the north in this image. It then flowed down the cataract into the smaller incised channel.
The horseshoe-shaped headcut here is only part of a larger cataract system, and probably formed during the last stage of flooding. The inner channels are now filled with dunes formed by wind blowing along the channel floor.MareKromiumMar 09, 2009
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ESP_011605_1170_RGB.jpgDefrosting Malea Patera (edm - possible True Colors; credits: Dr M. Faccin)57 visitenessun commentoMareKromiumMar 06, 2009
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ESP_011648_1730_RED_abrowse-01.jpgOval Mesa on Ganges Mensa (and another "mistery" solved) - Full image, map projected, RAW b/w58 visitenessun commentoMareKromiumMar 05, 2009
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ESP_011648_1730_RED_abrowse-02.jpgOval Mesa on Ganges Mensa (and another "mistery" solved) - Full image, non-map projected and Natural Colors; credits: Lunar Explorer Italia58 visitenessun commentoMareKromiumMar 05, 2009
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ESP_011605_1170_RED_abrowse.jpgDefrosting Malea Patera (Natural Colors; credits: Lunar Explorer Italia)76 visiteMalea Patera is one of a group of ancient volcanoes that ring the Hellas Impact Basin. This HiRISE image was intended to investigate the nature of the volcanic materials at this location. However, the image was taken in early Spring for this location in the Southern Hemisphere and so the ground is covered with bright frost except for some dark splotches found in discrete patches.
This is where the sunlight has penetrated the frost and initiated defrosting around discrete spots.
Clearly something is different about the patches where this defrosting has started before any other locations. One possibility is that these are (frost covered) dark sand dunes that heat up more easily than the surrounding terrain. However, we will need to take a new image in the Summer time to really know what is happening here.
Mars Local Time: 16:11 (middle afternoon)
Coord. (centered): 62,5° South Lat. and 53,3° East Long.
Spacecraft altitude: 249,1 Km (such as about 155,7 miles)
Original image scale range: 24,9 cm/pixel (with 1 x 1 binning) so objects ~75 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 0,9°
Phase Angle: 72,4°
Solar Incidence Angle: 73° (meaning that the Sun is about 17° above the Local Horizon)
Solar Longitude: 192,6° (Northern Autumn)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromiumMar 05, 2009
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ESP_011648_1730_RED_abrowse-00.jpgOval Mesa on Ganges Mensa (and another "mistery" solved) - Natural Colors; credits: Lunar Explorer Italia95 visiteMars Local Time: 15:56 (middle afternoon)
Coord. (centered): 7,2° South Lat. and 311,5° East Long.
Spacecraft altitude: 277,5 Km (such as about 173,4 miles)
Original image scale range: 27,8 cm/pixel (with 1 x 1 binning) so objects ~83 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 17,7°
Phase Angle: 41,0°
Solar Incidence Angle: 59° (meaning that the Sun is about 31° above the Local Horizon)
Solar Longitude: 194,6° (Northern Autumn)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer Italia
This Oval Mesa is a remnant of a geological unit that once covered this area, similar to the Mesas and Buttes in Monument Valley, in Arizona and Utah. This is a small remnant of a much larger unit of similar material that caps Ganges Mensa to the West.
As can be seen in the sides of this small Mesa, this remnant consists of a layered stack of rock. Prior to the massive erosion that left this a high-standing Mesa, a more gentle phase of erosion created the small hills and whorls on the upper surface of the Mesa. It seems that this gentle erosion continued even after the Mesa was created, as this pattern of small hills and whorls is visible on the terrain surrounding the Mesa.
Although not visible in the area shown in this HiRISE image, this Mesa actually sits on top of the much larger Ganges Mensa, which is itself a large Mesa within Ganges Chasma.
Nota Lunexit: una diversa ripresa di questo medesimo dettaglio costituì oggetto di una lunga discussione sul Forum degli Amici di "UFO-On Line". La querelle riguardava la presenza di un presunto (ed oggi, come viene ben dimostrato da questa nuova immagine, inesistente) "ingresso" (porta) sul versante Nord-Occidentale della Mesa Ovale che campeggia a centro frame. La discussione, forse innescatasi a seguito delle deliranti asserzioni di un noto Eso-Archeografo Italiano (e relative alla presenza di "evidenti accessi a presidi minerari" sul Pianeta Rosso...) si sviluppò in maniera interessante e costruttiva e ci portò anche al calcolo delle possibili dimensioni della "porta".
Oggi, grazie a questa nuova immagine - che pubblichiamo anche in versione RAW Original b/w - tutti potranno constatare che quella che SEMBRAVA essere una "porta" era, in vero, solo un leggero incavo (indentation) naturale presente sulla parete Nord-Occidentale della Mesa.
Morale: prima di parlare e di lanciarsi in interpretazioni che superano la Fantasia e sconfinano nella Bufala al 100% (e qui, che sia chiaro, NON CI RIFERIAMO agli Amici di "UFO-On Line"!), conviene sempre STUDIARE, DOCUMENTARSI, FARE CONFRONTI FRA DIVERSE IMMAGINI e poi, se proprio si vuol dare aria alla bocca e lavoro alla tastiera, SI SUGGERISCE DI RESTARE SEMPRE POSSIBILISTI - onde evitare di fare delle figure che definirle "meschine" è certamente riduttivo...
Ogni riferimento alle stupidaggini proferite da noti Eso-Archeografi Italici e non, è ASSOLUTAMENTE VOLUTO e NON CASUALE.MareKromiumMar 05, 2009
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ESP_011765_1780_RED_abrowse-00.jpgRipples in Meridiani Planum (ctx frame - Natural Colors; credits: Lunar Explorer Italia)59 visiteMars Local Time: 15:46 (middle afternoon)
Coord. (centered): 2,1° South Lat. and 354,5° East Long.
Spacecraft altitude: 276,0 Km (such as about 172,5 miles)
Original image scale range: 27,6 cm/pixel (with 1 x 1 binning) so objects ~83 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 12,5°
Phase Angle: 69,0°
Solar Incidence Angle: 57° (meaning that the Sun is about 33° above the Local Horizon)
Solar Longitude: 200,0° (Northern Autumn)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromiumMar 05, 2009
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ESP_011765_1780_RED_abrowse-01.jpgRipples in Meridiani Planum (edm - Natural Colors; credits: Lunar Explorer Italia)60 visitenessun commentoMareKromiumMar 05, 2009
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