| Piú votate - Mariner, Viking & MGS's Maps & Mars in the '70s |
N-Mariner4-66.jpgGlobal Sand&Dust-storm from Mariner 4 (possible thick clouds)74 visitenessun commento
(5 voti)
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ZD-E-Viking1-p7273b~0.jpgThe South-western horizon of Viking 1 (3)104 visiteCaption NASA originale:"This same crater has also been identified in Orbiter photographs and then used to locate the Lander position. Also visible beyond the crater rim is a ridge 8 to 10 Km distant".
(5 voti)
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ZE-I-Viking1-p139.jpgColor snap-shots from Viking 1 (10)106 visite"...Figure (10) can best be assigned to the "Special Effects" Category. It illustrates one of the many ways in which black and white images can be combined and printed in color to yield unusual patterns. In this instance an early morning image is assigned the color yellow and a picture taken in the afternoon is assigned the color blue. Although colors produced in this way are completely false, important details in the scene are sometimes favorably accentuated..."
(5 voti)
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ZE-I-Viking1-p133b.jpgColor snap-shots from Viking 1 (2)102 visite"...Even for pictures where we have both visible and IR information, two possible types of color can be created. The character of the Sunlight reaching the Martian Surface is significantly different than that reaching Earth's surface, primarily because of scattering and absorption by suspended dust particles. In addition, a certain amount of light reflected from the yellowish brown surface finds its way back as reflected sky light.
Figures (1), (2), and (3) illustrate the range of possible color reconstructions. All three pictures are based on the same camera data. The sampling area at the Viking 1 Site is shown. Two trenches in the Sandy Flats site, the first to be dug are shown at the far left.
Figure (1) is produced by using only visible color information, making no allowance for IR leaks..." (continua)
(5 voti)
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QB-VikingOne-PIA08616-02.jpgViking One: the Landing Site, 30 years after the landing... (3)84 visiteCaption NASA originale:"The MOC image of that location, acquired in 2003, showed additional near-field features (rocks associated with a nearby crater) that closely matched the Viking 1 images (frames 2 and 3, where "B" denotes "Volkswagen Rock"). The inset (upper right of frame 3) is an enlargement that shows the location of the Viking 1 Lander.
The MOC image of the Viking 1 Lander Site (3) was acquired during a test of the MGS Pitch and Roll Observation (PROTO) technique conducted on May 11, 2003. (Following initial tests, the "c" part of "cPROTO" was begun by adding compensation for the motion of the Planet to the technique). The PROTO or cPROTO approach allows MOC to obtain images with better than its nominal 1,5 mt (5 ft) per pixel resolution.
The image shown here (3) was map projected at 50 cm (~20") per pixel. The full 11 May 2003 image can be viewed in the MOC Gallery, it is image R05-00966.
In addition to celebrating the 30th anniversary of the first U.S. robotic Mars landing, we note that 20 July is also the 37th anniversary of the first human landing on the Moon, on 20 July 1969. There are two dates that are most sacred in the space business (three, if you count the 4 October 1957 launch of Sputnik 1). The other date is 12 April, which celebrates the 1961 launch of the first human in space, and the 1981 launch of the first space shuttle orbiter".
(5 voti)
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Marsorbitsolarsystem.gifEarth and Mars: the Orbital motion167 visiteUna GIF molto interessante e ben fatta che illustra con chiarezza come mai un Anno Marziano equivale, sostanzialmente, a due Anni Terrestri (in effetti, il Periodo di Rivoluzione di Marte intorno al Sole dura - circa - 687 Giorni Terrestri).MareKromium
(4 voti)
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ZE-I-Viking1-vl1_12b069-2.jpgLight and long Ice-Cloud over Chrise Planitia (Natural Colors; credits: Dr M. Faccin - Lunexit Team)78 visitenessun commentoMareKromium
(4 voti)
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ZE-I-Viking1-PIA10738.jpgMars Surface near Viking Lander 1 Footpad (MULTISPECTRUM; credits: Lunexit)95 visiteCaption NASA:"This image, which has been flipped horizontally, was taken by Viking Lander 1 on August 1st, 1976, 12 Soles after the landing. Much like images that have returned from Phoenix, the soil beneath Viking 1 has been exposed due to exhaust from thruster engines during descent.
This is visible to the right of the struts of Viking's surface-sampler arm housing, seen on the left".MareKromium
(4 voti)
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N-Mariner6-01_enf_08.jpgMars from Mariner 6: approaching Mars76 visitevedasi quanto dedotto in sede di commento al frame precedente
(4 voti)
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N-Mariner6-02_con_05b.jpgMars from Mariner 6: Lava Flows and shallow craters85 visiteNota: il "punto scuro" che si vede circa ad ore 08:00 del frame potrebbe essere l'ombra di Deimos (anche se non siamo in grado di escludere l'ipotesi per cui si possa anche trattare di un image-artifact).
(4 voti)
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N-Mariner6-02_con_07b.jpgMars from Mariner 6: Crater Clusters' Region and Lava Flows81 visitevedasi quanto dedotto in sede di commento al frame precedente
(4 voti)
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N-Mariner4-65.jpgThrough tha sand and dust: craters83 visitenessun commento
(4 voti)
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