| Ultimi arrivi - 1-Ceres and 4-Vesta |
085-Craters-Caparronia_Crater-PIA15129-PCF-LXTT.jpgMineral Diversity inside Caparronia Crater and Surroundings (Enhanced Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)238 visitenessun commentoMareKromiumDic 25, 2011
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083-Craters-Caparronia_Crater-PIA15129-PCF-LXTT.jpgCaparronia Crater and Surroundings (Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)229 visiteThis Dawn FC (framing camera) image is dominated by Caparronia Impact Crater. Caparronia Crater is approximately 55 Km in diameter and has a mostly fresh, irregularly shaped Rim. It also has a curved, linear mound running across most of its base. For all of these reasons Caparronia is a distinctive Crater and this is why it was chosen to name the Quadrangle in which it is situated. The smooth region around Caparronia Crater is most likely fine Impact Ejecta, which were thrown out from the Crater at the time of its formation. Other impact related features are the linear chains of small, less than 1 km wide, Secondary Craters that occur throughout the image. Some particularly distinctive Crater Chains are in the bottom part of the frame.
Secondary Crater Chains are formed when relatively large debris are ejected from an impact and skip along the Surface, much like a stone skipping across a lake. There are also some linear scars running diagonally across the image, which are due to debris scouring across the Surface.
This image is centered in Vesta's Caparronia Quadrangle and the center Latitude and Longitude of the image is 52,5° North and 149.2° East. NASA's Dawn Spacecraft obtained this image with its framing camera on October 23rd 2011. This image was taken through the camera's clear filter. The distance to the Surface of Vesta, at the time the picture was taken, was approx. 700 km and the image has a resolution of about 70 meters per pixel. This image was acquired during the HAMO (High Altitude Mapping Orbit) phase of the mission.MareKromiumDic 24, 2011
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082-Craters-Unnamed_Crater-PIA15222-PCF-LXTT.jpgIn the Shadows... (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)219 visiteThis image, one of the first obtained by NASA's Dawn Spacecraft in its low altitude mapping orbit, shows part of the Rim of a (relatively) fresh Unnamed Crater. The Terrain shown here is located in an area known as the Heavily Cratered Terrain in the Northern Hemisphere of 4-Vesta.
The image, taken by Dawn's framing camera, is centered at around 17° North Latitude and 77° East Longitude. It was obtained on Dec. 13, 2011, from an altitude of approx. 119 miles (about 191 Km). It covers an area of about 11 by 11 miles (such as approx. 18 by 18 Km).MareKromiumDic 23, 2011
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080-Craters-Tuccia_Crater-TQ-PIA15081-PCF-LXTT.jpgTuccia Crater (Absolute Natural Colors; credits for the additional process. and color.: Drr Gianluigi Barca and Paolo C. Fienga - Lunexit Team)158 visiteThis Dawn FC (framing camera) image is dominated by bright Rayed Craters of different sizes. The most prominent bright Rayed Crater is the approximately 8 Km diameter crater in roughly the center of the image. This Crater is named Tuccia and the Quadrangle in which it is located is named after it. Towards the bottom of the image its bright rays extend for over 10 Km but towards the top the Rays are much less extensive. Tuccia Crater has a smaller, fresher, younger Crater on its Rim which also seems to have bright rays emanating from it. It is clear that this smaller Crater is younger because it overprints the larger one and has a fresher, sharper Rim than Tuccia's. Slightly above these Craters is a much smaller, roughly 2 Km diameter, bright Rayed Crater. To the left of this Crater there is a patch of bright material that is associated with Craters that are only a few pixels in diameter. There is also a good example of the Hummocky (---> wavy/undulating) Terrain of Vesta's South Polar Region (visible at the bottom left of the frame). Tuccia Crater has been emplaced onto this Hummocky Terrain.
This image is in Vesta's Tuccia Quadrangle and the center Latitude and Longitude of the image is 38,8° South and 200,2° East. NASA's Dawn Spacecraft obtained this image with its framing camera on October 17th 2011. This image was taken through the camera's clear filter. The distance to the Surface of Vesta is about 702 Km and the image has a resolution of about 70 meters per pixel. This image was acquired during the HAMO (High Altitude Mapping Orbit) phase of the mission.MareKromiumNov 21, 2011
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081-Craters-Sextilia_Crater-PIA15085-PCF-LXTT.jpgSextilia Crater and Surroundings (Absolute Natural Colors; credits for the additonal process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia)159 visiteThis Dawn FC (framing camera) image is centered on the Sextilia Crater in Vesta's Southern Hemisphere. Craters on Vesta are named after Vestal virgins, priestesses of the Roman goddess Vesta. The Sextilia Crater is a large, approximately 15 Km diameter and distinctive Crater, therefore its name was used to name the whole Quadrangle in which it is located. Sextilia Crater is distinctive because it has a fresh, sharp Rim which is also scalloped in shape. It also contains Rocky Outcrops of both bright and dark material. These originate along its Rim and sides and slump towards the center of the Crater. There are some especially large slumps of material on the right side of it. Surrounding Sextilia Crater is the Hummocky (---> wavy/undulating) Terrain of Vesta's Southern Hemisphere and some dark and bright Rayed Craters.
This image is in Vesta's Sextilia Quadrangle and the center Latitude and Longitude of the image is 39,5° South and 155,7° East. NASA's Dawn Spacecraft obtained this image with its framing camera on October 10th 2011. This image was taken through the camera's clear filter. The distance to the surface of Vesta is approx. 702 Km and the image has a resolution of about 70 meters per pixel. This image was acquired during the HAMO (High Altitude Mapping Orbit) phase of the mission.MareKromiumNov 21, 2011
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072-Vesta-Striations-PIA14678-PCF-LXTT.jpgStriations on Vesta (Absolute Natural Colors; credits for the additional process. and color.: Drr Gianluigi Barca and Paolo C. Fienga - Lunexit Team)177 visitenessun commentoMareKromiumNov 16, 2011
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087-Craters-Unnamed_Craters-PIA14974.jpgUnnamed Craters in the Northern Regions (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)236 visitenessun commentoMareKromiumNov 16, 2011
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074-Vesta-PIA14776.jpgNight and Day on 4-Vesta (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)182 visitenessun commentoMareKromiumNov 16, 2011
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088-Craters-Unnamed_Crater-PIA15044-PCF-LXTT-1.jpgUnnamed Crater in Floronia Quadrant (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)187 visiteThis Dawn FC (framing camera) image is dominated by an approx. 20 Km-wide, young, fresh Unnamed Impact Crater. Surrounding this Unnamed Crater is its Ejecta Blanket, which is a covering of small particles that were thrown out during the impact that formed it and the Ejecta Blanket is the cause of the smooth Surface visible all around the Crater itself. This Ejecta Blanket buried many older, degraded craters, but some of them can be seen poking through the Blanket. Old and degraded craters are less clear or not visible directly next to the Unnamed Crater dominating the frame and this suggests that its Ejecta Blanket is very thick and fit to bury almost all the other (relatively small) impact craters located next to the bigger one.
There are also several distinctive Chains of small Craters running obliquely across the image on top of the Ejecta Blanket. They were not buried by the Ejecta Blanket and this means that they must be younger than it. These Crater Chains likely formed due to Secondary Impacts, when material thrown out of previous impacts re-impacted Vesta. Similarly, material ejected from the Unnamed approx. 20 Km-wide Crater has fallen back into the Crater itself and created several Pit-like features on its Floor.
This image is in Vesta's Floronia Quadrangle and the center latitude and longitude of the image is 32,5° North and 1,2° East. NASA's Dawn Spacecraft obtained this image with its framing camera on October 24th, 2011. This image was taken through the camera's clear filter. The distance to the Surface of 4-Vesta is 662 Km and the image has a resolution of about 62 meters per pixel. This image was acquired during the HAMO (High Altitude Mapping Orbit) phase of the mission.MareKromiumNov 16, 2011
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070-Vesta-PIA14973.jpgVesta's Northern and Equatorial Regions (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)223 visitenessun commentoMareKromiumNov 16, 2011
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068-Vesta-South_Pole_Dawn_3840.jpgFeatures of 4-Vesta: South Pole and South Polar Regions (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)229 visitenessun commentoMareKromiumOtt 01, 2011
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067-Vesta-PIA14694-1.jpgFeatures of 4-Vesta: Dark Material on Hilltops (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team) 131 visiteCaption NASA:"NASA's Dawn Spacecraft obtained this image with its framing camera on Aug. 18, 2011. This image was taken through the framing camera's clear filter aboard the Spacecraft. The image has a resolution of about 260 mts per pixel".
MareKromiumSet 19, 2011
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