| Piú viste - Curiosity and the Exploration of Gale Crater |
SOL0001-PIA15970.jpgWelcome to Gale Crater: Curiosity's Shadow - Sol 1 (RAW b/w Original NASA Frame; credits: NASA/JPL-Caltech)94 visitenessun commentoMareKromium
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SOL0058-PIA16193-PCF-LXTT-IPF.jpgHigh-Resolution View of a Cross-Section through a Martian Ripple - Sol 58 (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia - Italian Planetary Foundation)94 visiteCaption NASA:"This image shows the wall of a "scuffmark" made by the NASA - MER Curiosity in a Windblown Ripple of Martian Sand, by using one of its wheels. The upper half of the image shows a small portion of the side wall of the scuff and a little bit of the floor of the scuff (bottom of this image). The prominent depression with raised rims at the bottom center of the image was formed by one of the treads on Curiosity's front right wheel.
The largest Grains of Sand in this image are about 0,04 to 0,08" (such as about 1 to 2 millimeters) in size. Those large Grains were on top of the Windblown Ripple and fell down to this location when the scuff was made. The bulk of the Sand in the Ripple is smaller, in the range below 0,002 to 0,008" (i.e.: 50 to 200 microns). The full scuffmark is about 20" (such as approx. 50 centimeters) wide which is, by the way, the same width of Curiosity's wheel.
This image from the Mars Hand Lens Imager (MAHLI) is the product of merging 8 (eight) images acquired at 8 (eight) slightly different focus settings to bring out details on the wall, slopes, and floor of the wheel scuff. The merge was performed onboard the MAHLI instrument to reduce downlinked data volume.
The image was acquired by MAHLI with the lens about 4,7" (approx. 12 centimeters) from the target. The pixel scale is about 0,002" (such as approx. 50 microns) per pixel. The image covers an area, roughly 3 by 2" (such as about 8 by 6 centimeters). The image was obtained on October, 4, 2012 - such as the 58th Sol, or Martian Day, of operations of the MER Curiosity on the Surface of Gale Crater".MareKromium
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SOL0103-NRA_406647988EDR_F0050388NCAM07754M-PCF-LXTT-IPF.jpgTwilights over Gale Crater - Sol 103 (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)94 visitenessun commentoMareKromium
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SOL0141-EB-MF-LXTT-IPF.jpgFeatures of Yellowknife Bay - Sol 127 (an Image-Mosaic in RAW Natural Colors; credits for the additional process. and color.: Elisabetta Bonora and Marco Faccin/Lunar Explorer Italia/Italian Planetary Foundation)94 visitenessun commentoMareKromium
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W-Martian_Clouds-02.gifClouds...94 visiteJust beautiful, what else to say?MareKromium
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SOL3325-PIA25074.gifSol 3325 - Fast-moving Clouds (GIF-Movie)94 visiteMolto interessante, anche se la qualità dei vari frames che formano la GIF è pessima.MareKromium
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SOL0058-EB-MF-LXTT-IPF-3.jpgGale's Surface - Sol 58 (an Image-Mosaic in Natural Colors; credits for the additional process. and color.: Elisabetta Bonora and Marco Faccin/Lunar Explorer Italia/Italian Planetary Foundation)93 visitenessun commentoMareKromium
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SOL0182-PIA16728-PCF-LXTT-IPF.jpgDrilling Time! - Sol 182 (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/IPF)93 visitenessun commentoMareKromium
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SOL3749-mars_nasa_gov_msl-raw-images_msss_03749_mhli_3749MH0008600001304041C00_DXXX-0.jpgLittle "Red Point": do you see it? - Sol 374993 visiteUn micro-dettaglio che mi è balzato agli occhi. Se non riuscite a vederlo, Vi rimando all'EDM che segue.MareKromium
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SOL0014-EB-MF-LXTT-IPF.jpgClose-up at Gale: Salt? - Sol 14 (RAW Natural Colors; credits for the additional process. and color.: Elisabetta Bonora and Marco Faccin/Lunar Explorer Italia/Italian Planetary Foundation)91 visitenessun commentoMareKromium
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SOL0016-NRA_398919544EDR_F0030078NCAM00300M_.jpgRover Tracks - Sol 16 (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia/Italian Planetary Foundation)91 visitenessun commentoMareKromium
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SOL0054-PIA14762-NASA-JPL-Caltech-MSSS.jpg"Bathurst Inlet" Rock - Sol 54 (Natural Colors; credts: NASA/JPL-Caltech, Malin Space Science Systems)91 visiteNASA's Mars Rover Curiosity held its Mars Hand Lens Imager (MAHLI) camera about 10,5" (---> inches, such as about 27 centimeters) away from the top of a Rock called "Bathurst Inlet" for a set of 8 images combined into this merged-focus view of the Rock. This context image covers an area that is roughly 6,5 by 5" (such as 16 by 12 centimeters). Resolution is about 105 microns per pixel.
MAHLI took the component images for this merged-focus view, plus closer-up images of Bathurst Inlet, during Curiosity's 54th Martian Day, or Sol (such as September 30, 2012). The instrument's principal investigator had invited Curiosity's science team to "MAHLI it up!" in the selection of Sol 54 targets for inspection with MAHLI and with the other instrument at the end of Curiosity's Arm: the Alpha Particle X-Ray Spectrometer.
The "Bathurst Inlet" Rock is dark gray and appears to be so fine-grained that MAHLI cannot resolve Grains or Crystals in it. This means that the Grains or Crystals, if there are any at all, are smaller than about 80 microns in size. Some windblown sand-sized Grains or Dust Aggregates have accumulated on the Surface of the Rock, but this Surface is clean (if compared, for example, to the pebbly substrate below the rock - upper left and lower right in this context image).
MAHLI can do focus merging onboard the MER and, in fact, the full-frame versions of the 8 separate images that were combined into this view were not even returned to Earth -- just the thumbnail versions. In other words, merging the images onboard reduces the volume of data that is supposed to be downlinked to Earth.MareKromium
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