The Best Frames from Viking Orbiter 1 and 2
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vo1_250a13-1.jpgA streak in the Sky (extra detail mgnf)61 visiteDettaglio ad elevato stretching della striscia di luce visibile in alto a Dx nel frame che segue. Si tratta di un artefatto fotografico davvero molto simile a quanto visibile anche nel frames (famosissimi) ottenuti, guarda caso sempre nelle vicinanze di Phobos, dalla Sonda Sovietica Phobos-2?
La coincidenza è forte, la somiglianza fra le due "strisce" è enorme; noi, però, vogliamo e dobbiamo essere pragmatici: non ci è possibile, infatti, fare alcuna speculazione sulla possibile causa e natura della Striscia di Luce in oggetto. UFO? Stella sullo sfondo che risulta mossa a causa della esposizione adottata dalla Sonda Viking 1 per ottenere questo frame?
O semplice photoartifact?
Ancora una volta (sorry...) dovete decidere Voi.
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Volcanic_Features-Apollinaris_Patera-PCF-LXTT.jpgApollinaris Patera (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)53 visiteThis Martian Volcano is found along the border between the ancient Martian Highlands and the younger Northern Lowlands.
It is characterized by a large caldera (~60 Km diameter), a basal scarp, and a large fan that emanates from the caldera and covers the Southern Flanks. Like other martian volcanoes it appears to have undergone episodes of both explosive and effusive eruptions. The color information in this mosaic of Apollinaris Patera comes from a series of color frames acquired by Viking 1 during orbit 468S (~350 m/pixel).
To sharpen details of morphology, the color mosaic was merged with a higher resolution (~180 mt/pixel) series of images acquired during orbit 088A.
For more information on Apollinaris Patera see:
- Robinson et al., Chronology, Eruption Duration, and Atmospheric Contribution of the Martian Volcano Apollinaris Patera, Icarus, 104, pp. 301-323, 1993.
- Scott, D.H., J.M. Dohm, D.J. Applebee, Geologic Map of Science Study Area 8, Apollinaris Patera Region of Mars, (Special MTM-10186 Quadrangle), USGS Misc. Investigations Series, MAP-I-2351, 1993.MareKromium
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N-Deimos.jpgDeimos (Natural Colors; credits: NASA/JPL)53 visiteCaption NASA originale:"Color pictures of the two Martian moons have confirmed Earth-based spectra by also showing both satellites to be gray. The Viking imaging data showed the surfaces to be uniformly gray over the complete surface to a resolution of a few hundred meters. No significant color differences were seen on either surface, including areas around craters and those within the bright albedo features on Deimos.
The color indicates composition is of a carbonaceous chondritic material. Deimos, here, is at a range of 2100 km from the Viking 1 Orbiter. In these pictures, color differences have be en exaggerated; most of the color differences are due to noise or are artifacts of the processing, especially around craters and the limb".
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vo2_423b61.jpgDeimos, from Viking 253 visitenessun commento
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vo2_423b62.jpgDeimos, from Viking 253 visitenessun commento
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vo2_423b63.jpgDeimos, from Viking 253 visitenessun commento
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vo2_413b83.jpgDeimos, from Viking 253 visitenessun commento
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vo2_428b60.jpgDeimos, from Viking 255 visitenessun commento
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vo2_428b61.jpgDeimos, from Viking 253 visitenessun commento
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![vo2_248b57[1].jpg](albums/userpics/10008/small_vo2_248b57%5B1%5D.jpg "Nome del file=vo2_248b57[1].jpg
Dimensione del file=87KiB
Dimensioni=1130x931
Aggiunta il=Dic 15, 2006")
vo2_248b57[1].jpgExtremely bright craters' edges63 visitenessun commento
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Phobos-05.jpgFractures radiating from Stickney Crater53 visiteCaption NASA originale:"Viking Orbiter 1 flew within 300 Km of Phobos in May 1977 to obtain this photomosaic. Raw pictures are at the top and computer-enhanced pictures, to show small surface detail, are at the bottom. The Northern Hemisphere of Phobos is visible from about 30° above the Equator (Phobos' orbit plane), with the side of Phobos facing Mars at the lower right. Phobos presents an illuminated area of about 17 Km from top to bottom and 23 Km across. The rim of Stickney, the largest crater on Phobos, is seen at the lower left, with a large network of grooves radiating from it.
A large, 2-km diameter crater with a slumped wall is seen just below the middle of the picture".
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vo1_413s14.jpgMars, according to Viking 1 Orbiter53 visitenessun commento
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