| Risultati della ricerca nelle immagini - "Panorama" |
030-OPP-SOL269-1N152063405EFF37B5P1910L0M1.jpgClouds over Endurance (in the early morning)144 visiteUna nota (è proprio il caso di dirlo...) di "colore": abbiamo già ricevuto commenti che esprimono dubbi sull'accuratezza del nostro programma di "colorazione" dei frames e svariati Lettori si domandano il motivo per cui il cielo di Marte lo "coloriamo" di rosa, arancio, rosso e non di blu. Allora, cerchiamo di darVi due risposte molto semplici e definitive:
1) il programma in questione è un gioco: funziona (e cioè "colora") solo una volta date determinate premesse. Cambiate le premesse, cambiano i colori e nessuno sa - oggi come oggi - se le nostre premesse (come quelle della NASA o di qualsiasi altro) sono effettivamente accurate o no;
2) non abbiamo elementi, a parte il Rayleigh Scattering (che, ribadiamo, non è detto che su Marte conduca ai medesimi risultati che vediamo sulla Terra), i quali supportino l'ipotesi di "Cieli Azzurri su Marte". Al limite, come già ipotizzato in passato, potremmo supporre e sostanziare l'idea di cieli rosati al mattino, celeste chiarissimo nelle ore del mezzogiorno e del primo pomeriggio, per poi arrivare ad un rapido abbattimento della luminosità dalla metà del pomeriggio, con cielo di colore azzurro/blu molto scuro all'orizzonte e nero dai 45/50° e sino allo Zenith.
Al tramonto, ipotizziamo - al contrario di quello che fa la NASA - una colorazione rosso/arancio intensa nei pressi dell'area in cui il Sole cala mentre il resto del cielo dovrebbe rimanere color azzurro tenebra.
Se le polveri in sospensione fossero effettivamente presenti in grandi quatitativi, allora potremmo anche ipotizzare la permanenza di una luminosità arancio/rosa diffusa - ma solo nei pressi dell'area in cui il Sole è tramontato - per alcune ore dopo il tramonto. Per il resto, cielo molto scuro con già visibili una moltitudine di stelle, anche di medio/minima magnitudine.
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088-SOL932-McMurdo_L257F-A814R1_cbr2-00.jpgMc Murdo Panorama (1)77 visiteCaption NASA originale:"This beautiful scene reveals a tremendous amount of detail in Spirit's surroundings. Many dark, porous-textured volcanic rocks can be seen around the Rover, including many on Low Ridge. Two rocks to the right of center, brighter and smoother-looking in this image and more reflective in infrared observations by Spirit's Miniature Thermal Emission Spectrometer, are thought to be meteorites. On the right, "Husband Hill" on the horizon, the rippled El Dorado sand dune field near the base of that hill and lighter-toned Home Plate below the dunes provide context for Spirit's travels since mid-2005. Left of center, tracks and a trench dug by Spirit's right-front wheel, which no longer rotates, have exposed bright underlying material. This bright material is evidence of sulfur-rich salty minerals in the subsurface, which may provide clues about the watery past of this part of Gusev Crater".
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088-SOL932-McMurdo_L257F-A814R1_cbr2-01.jpgMc Murdo Panorama (2)64 visiteCaption NASA originale:"Spirit has stayed busy at Winter Haven during the past six months even without driving.
In addition to acquiring this spectacular panorama, the Rover Team has also acquired significant new assessments of the elemental chemistry and mineralogy of rocks and soil targets within reach of the rover's arm. The team plans soon to have Spirit drive to a very nearby spot on Low Ridge to access different rock and soil samples while maintaining a good solar panel tilt toward the Sun for the rest of the Martian Winter.
Despite the long span of time needed for acquiring this 360° view - a few images at a time every few Soles over a total of 119 Soles because the available power was so low -- the lighting and color remain remarkably uniform across the mosaic".
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088-SOL932-McMurdo_L257F-A814R1_cbr2-02.jpgMc Murdo Panorama (3)66 visiteCaption NASA originale:"This fact attests to the repeatability of Wintertime Soles on Mars in the Southern Hemisphere.
This is the time of year when Mars is farthest from the Sun, so there is much less Dust Storm and Dust Devil activity than at other times of the year".
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091-SOL1029-2N217727122EDNAS20P1585L0M1-00.jpgInterpretations: yellow/orange-sky over the Hills60 visitenessun commentoMareKromium
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092-SOL1029-2N217727122EDNAS20P1585L0M1-01.jpgInterpretations: blue-sky over the Hills56 visitenessun commentoMareKromium
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099-PIA09090.jpgWinter Home...57 visiteCaption NASA:"This is a portion of an image called the "McMurdo Panorama", taken by the PanCam on NASA's Spirit Rover during its Winter Campaign of 2006. The view is looking toward the North at "Husband Hill", the dark-toned "El Dorado" dune field and the light-toned "Home Plate" feature. Husband Hill is approximately 850 mt (about 2800 feet) from the Rover's Winter Campaign Site. Wind-blown ripples are evident in the field in the foreground, along with vesicular basalt rock. Tracks made by Spirit as it left Home Plate are also visible. (...)".
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29-G-Surveyor6_full.jpgSurveyor 6 - Panorama134 visiteOriginal caption:"This panorama of the cratered lunar surface was constructed from images returned by the US Surveyor 6 lander.
Surveyor 6 was not the first spacecraft to accomplish a soft landing on the Moon ... but it was the first to land and then lift off again! After the spacecraft touched down near the center of the Moon's nearside in November of 1967, NASA controllers commanded it to hop. Briefly firing its rocket engine and lifting itself some 4 mt above the surface, the Surveyor moved about 2,5 meters to one side before setting down again. The hopping success of Surveyor 6 essentially marked the completion of the Surveyor series main mission - to determine if the lunar terrain was safe for the planned Apollo landings".
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APOLLO 11 AS 11-40-5937 HR2.jpgAS 11-40-5937 - Lunar Horizon (HR)156 visiteLo scanning effettuato dall'Astrofilo Americano Kipp Teague su questo frame a colori che ritrae il cinereo orizzonte del Mare della Tranquillità è davvero eccellente e la definizione dei dettagli sui tantissimi boulders che costellano il paesaggio è semplicemente magnifica.
L'effetto che abbiamo battezzato "orizzonte tagliato", tuttavia, rimane.
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APOLLO 12 AS 12-46-6730 HR.jpgAS 12-46-6730 - "Blocky Rim" and "Long Shadows" (HR)139 visiteOriginal caption:"First image of a 16-frame pan that Pete Conrad took while standing west of the LM, showing the view slightly to the left of down-Sun. Note the blocky-rimmed crater beyond the shadow, above the center of the image and just below the horizon. As Pete mentions at 118:27:12 MT, he mistakenly took the pan at 15-foot focus instead of 74-foot focus. Scan courtesy NASA Johnson SC".
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APOLLO 12 AS 12-46-6741.jpgAS 12-46-6741 - The "Eastern Wall" of Surveyor Crater (1)177 visiteFrame from Pete Conrad's 12 o'clock pan showing the deep shadow on the eastern wall of Surveyor Crater and, as indicated in a detail, the sunlit solar panels on the Surveyor III spacecraft on the left. Compare with the corresponding frames from Pete's 4 o'clock pan, AS 12-46-6746 and his 8 o'clock pan, AS 12-46-6769. The body and legs of the Surveyor are in shadow. Note the two overlapping craters on the sunlit, southeast inner wall of Surveyor Crater. Note, also, the blocky rimmed crater just outside the LM shadow in the foreground. These blocks may be ejecta from Surveyor Crater which was buried by regolith sprayed onto the site by other impacts and was then brought back to the surface for a second time (at least) by the impact that made the small crater.
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APOLLO 12 AS 12-46-6746.jpgAS 12-46-6746 - The "Eastern Wall" of Surveyor Crater (2)156 visiteCaption NASA originale:"First frame from Pete Conrad's 4 o'clock pan showing the deep shadow on the eastern wall of Surveyor Crater and (...) the sunlit solar panels of Surveyor III.
Compare with the corresponding frames from Pete's 12 o'clock pan, AS 12-46-6741 and his 8 o'clock pan, AS 12-46-6769.
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