Walking on Mars with Spirit and Opportunity
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SOL925-2P208479101ESFAS00P2286R5M1-A.jpg"Sinking" Mars, again... - Sol 92595 visiteCaption NASA originale:"Right PanCam Non-linearized Sub-frame EDR acquired on Sol 925 of Spirit's mission to Gusev Crater at approximately 12:10:38 MLT. Camera commanded to use Filter 5 (904 nm)".
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SOL925-2P208479101ESFAS00P2286R5M1-B.jpg"Sinking" Mars, again... (detail mgnf) - Sol 92563 visitenessun commento
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SOL926-1.jpgLooking Down - Sol 926 (natural colors; credits: Dr G. Barca)65 visitenessun commentoMareKromium
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SOL927-1.jpgSolar Panels and Salt - Sol 927 (possible True Colors; credits: Dr G. Barca & Lunexit)63 visitenessun commentoMareKromium
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SOL927-2P208656399ESFAS00P2288R4M1-A.jpgExtremely anomalous Surface Feature (context image) - Sol 925101 visitenessun commento
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SOL927-2P208656399ESFAS00P2288R4M1-B.jpgExtremely anomalous Surface Feature (detail mgnf) - Sol 92599 visitenessun commento
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SOL930-3.jpgLate Sun over Gusev... - Sol 930 (possible True Colors; credits: Dr G. Barca & Lunexit)71 visitenessun commentoMareKromium
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SOL930-931.jpgSharp changes... - Sol 930-931106 visiteUn nuovo, eccellente (e sicuramente fonte di controversie...) Lavoro del bravissimo Dr Gianluigi Barca: dal confronto immediato e diretto fra due scorci analoghi emergono - a nostro parere - delle sconcertanti diversit.
Diversit che, se nella coppia inferiore di frames possono (stiracchiando un bel p la nostra capacit logica...) anche essere tentativamente e razionalmente spiegate con l'esistenza di un minimo shift prospettico e con l'ovvio (ed eclatante, negli effetti visivi) cambio di filtro/colore, nella coppia di frames superiore diventano...inspiegabili (osservate la roccia cerchiata in fucsia e, in particolare, notate come la sua "cresta" - o porzione superiore - che appare alquanto lineare nel frame di Sx, diventi "spezzata" nel frame di Dx).
Ancora un effetto speciale "Made in NASA"?
Questo non lo sa (ancora) nessuno. Un ottimo lavoro, un nuovo "Mistero Marziano"...
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SOL930-935-P2762_L4_montage-A945R1~0.jpgMeaningful Shadows... (1) - Soles 930/93564 visiteTaking advantage of lengthening shadows during the onset of Winter and at different times of day, NASA's MER Spirit acquired this series of images accentuating subtle features in the terrain. Images acquired at low Sun angles allow scientists to better understand differences in surface roughness among soils and rocks. Variations in how brightly Sunlight reflects off surfaces under different lighting conditions help scientists estimate the microscopic physical characteristics of the mineral grains in different rocks and soils. Shadows from the Rover itself are visible in the foreground of the late-afternoon mosaic and cover part of the Rover's tracks and disturbed, light-toned soils.
Spirit acquired these sets of images at different Local True Solar Times (LTST) on Martian Soles 930 (Aug. 15, 2006), 931 (Aug. 16, 2006) and 935 (Aug. 20, 2006) using the 601-nanometer filter of the PanCam.
Spirit acquired the mosaics of the Rover's tracks, composed of 3 frames each, with the PanCam turned to an azimuth of 110 degrees (east-southeast).
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SOL930-935-P2763_L4_montage-A945R1.jpgMeaningful Shadows... (2) - Soles 930/93563 visiteSpirit acquired the single-frame images of sand ripples with the PanCam turned to an azimuth of 290 (West-NorthWest).
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SOL931-1.jpgThe "True Colors" of Gusev - Sol 931 (possible True Colors; credits: Dr G. Barca & Lunexit)65 visitenessun commentoMareKromium
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SOL932-1-2.jpgHigh Tau...Again! - Sol 932 (natural colors; credits: Dr G. Barca & Lunexit)66 visitenessun commentoMareKromium
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