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OPP-SOL896-B_P2558_1_True_RAD-B918R1.jpgBaltra - Sol 89655 visiteNASA's MER Opportunity recently stopped to analyze an exposure of rock near Beagle Crater, on a target nicknamed Baltra. Nearly 100 Soles have passed since Opportunity had last analyzed one of the now-familiar rock exposures seen on the Plains of Meridiani. The Rover ground a mm-deep (0,12"-deep) hole in the rock using the RAT on Sol 893 (July 29, 2006) while stationed about 25 mt (82 feet) from the South-West rim of Beagle Crater.
Scientists wanted to analyze the outcrop one more time before driving the Rover onto the ring of smooth material surrounding Victoria Crater. Opportunity's analysis showed the rock to be very similar in its elemental composition to other exposures encountered during the Rover's Southward trek across Meridiani Planum.
Opportunity acquired the image data shown here shortly after noon on Mars on Sol 896 (Aug. 1, 2006) with the PanCam after backing up 1 mt (3,3 feet) from Baltra to make sure that the target was in full Sunlight.
This is an approximately true-color Pancam image, generated from mathematical combinations of calibrated left-eye images using filters ranging from 432-nanometer to 753-nanometer wavelengths.
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OPP-SOL894-neg4_mos-B918R1.jpgThe RAT's Mark on "Baltra" - Sol 89455 visiteOpportunity's MI acquired this view on Sol 894 (July 30, 2006) while the target was fully shadowed. The view shows an area about 6 cm (such as 2,4") across, just spanning the diameter of the hole ground into Baltra. The image resolution of 30 microns per pixel makes it possible to see features as small as 0,1 mm (such as 0,004").
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OPP-SOL917-1N209596779EFF755JP1985R0M1.jpgWhat's around Opportunity... (3) - Sol 91755 visitenessun commento
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OPP-SOL917-1N209596832EFF755JP1985L0M1.jpgWhat's around Opportunity... (4) - Sol 91755 visitenessun commento
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Tethys-PIA08254-1.jpgMelanthius Crater (detail mgnf)55 visiteCaption NASA:"Cassini looks into the 245-Km (150-mile) wide crater Melanthius in this view of the Southern Terrain on Tethys. The crater possesses a prominent cluster of peaks in its center which are relics of its formation.
Notable here is a distinct boundary in crater abundance -- the cratering density is much higher in the farthest Western Terrain (left side of the image) than elsewhere.
North on Tethys is up and rotated 45° to the left.
The image was taken in visible light with the Cassini spacecraft narrow-angle camera on July 23, 2006 at a distance of approx. 120.000 Km (such as about 75.000 miles) from Tethys and at a Sun-Tethys-spacecraft, or phase, angle of 29°.
Image scale is roughly 715 mt (such as about 2,345 feet) per pixel".
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Tethys-PIA08254-0.jpgMelanthius Crater (context image)55 visitenessun commento
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SOL930-935-P2763_L4_montage-A945R1.jpgMeaningful Shadows... (2) - Soles 930/93555 visiteSpirit acquired the single-frame images of sand ripples with the PanCam turned to an azimuth of 290° (West-NorthWest).
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OPP-SOL928-1M210566004EFF758ZP2956M2M1.jpgUnbelievable "Surface Texture" (1) - Sol 92855 visiteCaption NASA originale:"Microscopic Imager Non-linearized Full frame EDR acquired on Sol 928 of Opportunity's mission to Meridiani Planum at approximately 12:21:57 MLT.
Microscopic Imager dust cover commanded to be OPEN".
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OPP-SOL929-1N210665715EFF75__P0685R0M1.jpg"Little One": just before Victoria (1) - Sol 92955 visiteUno splendido (e piccolo) cratere - dalle dimensioni apparenti di 25/30 mt di diametro - che abbiamo battezzato "Little One": l'ultima fermata prima del grande Victoria Crater il cui bordo (rim) lo si può già vedere con una discreta chiarezza (nei tre frames precedenti).
La NASA, a proposito di nomi e battesimi, ha invece chiamato questo piccolo cratere con il nome di "Emma Dean".
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The Rings-PIA08259.jpgGravitational Disturbances55 visiteCaption NASA originale:"The clumpy disturbed appearance of the brilliant F-Ring constantly changes. The irregular structure of the Ring is due, in large part, to the gravitational perturbations on the ring material by one of Saturn's moons, Prometheus (about 102 Km, or 63 miles across).
Interior to the F-Ring, the A-Ring bears a striking resemblance to a classic grooved, vinyl record. Visible here are the Keeler Gap (about 42 Km, or 26 miles wide) and the Encke Gap (about 325 Km, or 200 miles wide).
The image was taken using a spectral filter sensitive to wavelengths of infrared light centered at 862 nnmts. The view was acquired with the Cassini spacecraft narrow-angle camera on July 26, 2006 at a distance of approx. 1,5 MKM (about 900.000 miles) from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 141°. Image scale is roughly 8 Km (such as about 5 miles) per pixel".
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63-smart-1_data1002887_024_H.jpgHeavily cratered Lunar Region55 visitenessun commento
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OPP-SOL901-PIA08753-001.jpgBeagle Crater and 360° Panorama from Sol 901 through 904 (1)55 visiteCaption NASA originale:"This 360° view shows one of Opportunity's last stops on the now-familiar surface of Meridiani Planum before reaching different terrains associated with the very large Victoria Crater. In the center of the mosaic - frames 7 to 11 - is Beagle Crater, an impact crater about 35 mt (115 feet) wide. On the far left and wrapping around to the far right, Opportunity's tracks are visible approaching the crater".
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