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| Ultimi arrivi - Mercury |
ZZ-Mercury-Volcanic_Regions-PIA10942-PCF-LXTT.jpgMercurian Volcano (Enhanced Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)212 visiteAs reported in the July 4th, 2008 issue of Science Magazine, Volcanoes have been discovered on Mercury’s Surface from images acquired during MESSENGER’s first Mercury Fly-By. This image shows the largest feature identified as a Volcano in the upper center of the scene. The Volcano has a central kidney-shaped depression, which is the Vent, and a broad smooth Dome surrounding the Vent. The Volcano is located just inside the Rim of the Caloris Impact Basin. The Rim of the Basin is marked with Hills and Mountains, as visible in this image. The role of Volcanism in Mercury’s history had been previously debated, but MESSENGER’s discovery of the first identified Volcanoes on Mercury’s Surface shows that Volcanism was active in the distant past on the innermost Planet.
Date Acquired: January 14, 2008
Image Mission Elapsed Time (MET:108826877
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Resolution: 270 meters/pixel (0,17 miles/pixel)
Scale: this image is about 270 Km across (approx. 170 miles)
Spacecraft Altitude: 10.500 Km (approx. 6500 miles)MareKromiumNov 22, 2011
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ZZ-Mercury-Volcanic_feature-Collapse_Pit-PIA13468-PCF-LXTT.jpgCollapse Pit-Chain inside Picasso Crater (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)202 visiteThe Crater pictured in the center of this image was recently named Picasso, in honor of the Spanish painter and sculptor Pablo Picasso (1881-1973). This Crater, first imaged during MESSENGER's third Mercury Fly-By, has drawn scientific attention because of the large, arc-shaped Pit-Chain located on the Eastern side of its Floor. Similar Pits have been discovered on the Floors of several other Mercurian Craters, such as Beckett and Gibran. These Pits are postulated to have formed when subsurface magma subsided or drained, causing the surface to collapse into the resulting void. If this interpretation is correct, Pit-Floor Craters - such as Picasso - provide evidence of shallow magmatic activity in Mercury's history.
Date Acquired: September 29, 2009
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Resolution: 500 meters/pixel (0,31 miles/pixel)
Scale: the diameter of Picasso is roughly 133 Km (about 83 miles)
Projection: This image is a portion of the NAC approach mosaic from Mercury Fly-By n. 3. It is shown in a simple cylindrical map projection.MareKromiumNov 22, 2011
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ZZ-Mercury-Craters-Raditladi_Impact_Basin-PIA14856-PCF-LXTT.jpgFeatures of Raditladi Impact Basin (Enhanced Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)233 visiteCaption NASA:"View of a section of the Floor and Peak-Ring Mountains of the Raditladi Impact Basin. The individual frames in the mosaic are about 20 km wide. The rounded, depressions, called "Hollows" are a fascinating discovery of MESSENGER's orbital mission and may have been formed by Sublimation of a component of the material when exposed by the Raditladi Impact Event.
Date Presented: September 29, 2011, at a NASA press briefing
Instrument: Mercury Dual Imaging System (MDIS)MareKromiumNov 04, 2011
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ZZ-Mercury-Limb-PIA14551-pcf-lxtt.jpgMercurian Limb (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)131 visiteThe Rays apparent in this spectacular Limb image of Mercury come from Debussy, the sharp Crater near the Terminator. This dominant Crater on Mercury was also a part of MESSENGER's historic image of Mercury- the first image ever to be taken from a spacecraft in orbit about this Planet. Readers may also notice a streak in the blackness of space in the top left corner of the image. This artifact was produced by a Cosmic Ray hitting the camera's CCD detector while the image was being collected.
This image was acquired as part of MDIS's Limb imaging campaign. Once per week, MDIS captures images of Mercury's Limb, with an emphasis on imaging the Southern Hemisphere's Limb. These Limb images provide information about Mercury's shape and complement measurements of topography made by the Mercury Laser Altimeter (MLA) of Mercury's Northern Hemisphere.
Date of acquisition: July, 26th, 2011
Image Mission Elapsed Time (MET): 220137668
Image ID: 550504
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filter: 7 (748 nanometers)
Center Latitude: 27,90° South
Center Longitude: 29,17° East
Resolution: 2783 meters/pixel
Scale: Mercury's radius is approximately 2440 km (about 1515,24 miles)
Solar Incidence Angle: 65,1°
Emission Angle: 48,2°
Sun-Mercury-Spacecraft (i.e.: "Phase") Angle: 95,3°MareKromiumOtt 02, 2011
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ZZ-Mercury-Crater_Chains-PIA14529-PCF-LXTT.jpgFirdousi's Smooth Plains & Crater Chains (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team) 157 visiteDate acquired: July, 17, 2011
Image Mission Elapsed Time (MET): 219349510, 219349512, 219349518
Image ID: 513659, 513658, 513662
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filter: 9 (1000 nanometers), 7 (750 nanometers), 6 (433 nanometers) as red-green-blue
Center Latitude: 6,77° North
Center Longitude: 69,01° East
Resolution: 1330 meters/pixel
Scale: the large crater in the lower left quadrant of this image is about 134 Km (83,214 miles) in diameter
Solar Incidence Angle: 52,4°
Emission Angle: 0,3°
Sun-Mercury-Spacecraft (or "Phase") Angle: 52,4°MareKromiumAgo 30, 2011
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ZZ-Mercury-Craters-Rembrandt_Crater-PIA14549-PCF-LXTT.jpgRembrandt Crater (Absolute Natural Colors; credits for the additional process. and color: Dr Paolo C. Fienga - Lunexit Team)156 visiteDate acquired: August, 07, 2011
Image Mission Elapsed Time (MET): 221198580
Image ID: 601688
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filter: 7 (748 nanometers)
Center Latitude: 32,95° South
Center Longitude: 84,90° East
Resolution: 1756 meters/pixel
Scale: Rembrandt Crater is ~715 Km (444,015 miles) in diameter.
Solar Incidence Angle: 46,3°
Emission Angle: 48,7°
Sun-Mercury-Spacecraft (or "Phase") Angle: 95,0°MareKromiumAgo 30, 2011
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ZZ-Mercury-Craters-Rembrandt_Crater-PIA14497-PCF-LXTT.jpgRembrandt Crater (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)142 visiteDate acquired: July, 11th, 2011
Image Mission Elapsed Time (MET): 218833662, 218833682, 218833666
Image ID: 489008 , 489013, 489009
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filter: 9 (1000 nanometers), 7 (750 nanometers), 6 (433 nanometers) as red-green-blue
Center Latitude: 34,67° South
Center Longitude: 100,4° East
Resolution: 1853 meters/pixel
Scale: Rembrandt Basin has a diameter of about 716 Km (approx. 445 miles)
Solar Incidence Angle: 50,5°
Emission Angle: 0,4°
Phase Angle: 50,5°MareKromiumLug 31, 2011
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ZZ-Mercury-Craters-Xiao_Zhao_Crater-PIA14495-PCF-LXTT.jpgXiao Zhao Crater (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)133 visiteDate acquired: July, 11th, 2011
Image Mission Elapsed Time (MET): 218840609
Image ID: 489105
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filter: 9 (996 nanometers)
Center Latitude: 14,17° North
Center Longitude: 122,3° East
Resolution: 456 meters/pixel
Scale: the diameter of Xiao Zhao is 24,2 Km (approx. 15 miles)
Solar Incidence Angle: 22,1°
Emission Angle: 34,3°
Phase Angle: 56,4°MareKromiumLug 31, 2011
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ZZ-Mercury-Unusual_Surface_Feature-PIA14465-PCF-LXTT.jpgAngular "Albedo Arc" (Enhanced Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia)135 visiteCaption NASA:"A distinct Albedo difference is visible in this image, separating lighter, smoother ground in the North from darker, older Terrain in the South. This contrast is likely indicative of a compositional difference between the two Terrains. Although at first glance this feature seems angular, the Albedo change most likely marks the edge of an extremely degraded Impact Basin (---> Crater)".
Date acquired: June, 21st, 2011
Image Mission Elapsed Time (MET): 217183900
Image ID: 409241
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filter: 7 (748 nanometers)
Center Latitude: 30,53° North
Center Longitude: 226,2° East
Resolution: 343 meters/pixel
Scale: the diagonal length of this image is about 500 km (310 mi) across
Solar Incidence Angle: 54,3° (meaning that the Sun is about 35,7° above the Local Mercurian Horizon)
Emission Angle: 0,3°
Sun-Mercury-Messenger (or "Phase") Angle: 54,1°MareKromiumLug 20, 2011
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ZZ-Mercury-Craters-Qi_Baishi_et_al_-PIA14398-PCF-LXTT.jpgTolstoj Basin (Enhanced Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)267 visiteThe various named features present in this color image, Qi Baishi, Hovnatanian, Kalidasa and Tolstoj, create a stunning depiction of Mercury's scarred and variable Surface. Tolstoj, the large basin in the bottom right of the image, represents the war and peace of its namesake's famous novel through its smooth, light-colored center and rough, dark blue exterior.
This image was acquired as part of MDIS's color base map. The color base map is composed of WAC images taken through eight different narrow-band color filters and will cover more than 90% of Mercury's Surface with an average resolution of 1 Km/pixel (0,6 miles/pixel). The highest-quality color images are obtained for Mercury's Surface when both the spacecraft and the Sun are overhead, so these images typically are taken with viewing conditions of low incidence and emission angles.
Date acquired: June, 27th, 2011
Image Mission Elapsed Time (MET): 217689462, 217689478, 217689458
Image ID: 433721, 433725, 433720
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filter: 9 (1000 nanometers), 7 (750 nanometers), 6 (430 nanometers) as red-green-blue
Center Latitude: 11,69° South
Center Longitude: 178,1° East
Resolution: 1387 meters/pixel
Scale: the Inner Ring of Tolstoj is roughly 365 Km
Incidence Angle: 13,4°
Emission Angle: 14,6°
Phase Angle: 28,0°MareKromiumLug 17, 2011
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ZZ-Mercury-Global_View_of_the_Surface-PIA14399-PCF-LXTT.jpgLow Reflectance Material and Crater Rays (Enhanced Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunexit Team)204 visiteThis image highlights some of the color features present on Mercury's Surface, such as Low Reflectance Material (LRM) and Crater Rays. Visible in the top left quadrant of this image is the named crater Moody, which has a prominent yellow-orange color on its Floor in this enhanced color image.
This image was acquired as part of MDIS's color base map. The color base map is composed of WAC images taken through eight different narrow-band color filters and will cover more than 90% of Mercury's Surface with an average resolution of 1 Km/pixel (0,6 miles/pixel). The highest-quality color images are obtained for Mercury's surface when both the Spacecraft and the Sun are overhead, so these images typically are taken with viewing conditions of low incidence and emission angles.
Date acquired: July, 3rd, 2011
Image Mission Elapsed Time (MET): 218154838, 218154854, 218154834
Image ID: 456233, 456237, 456232
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filter: 9 (1000 nanometers), 7 (750 nanometers), 6 (430 nanometers) as red-green-blue
Center Latitude: 30,86° South
Center Longitude: 149,5° East
Resolution: 1712 meters/pixel
Scale: Moody crater is approx. 83 Km (~51,5 mi.) in diameter
Incidence Angle: 32,6°
Emission Angle: 0,5°
Phase Angle: 32,8°MareKromiumLug 17, 2011
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ZZ-Mercury-Craters-Ives_Crater-PIA14360-PCF-LXTT.jpgIves Crater (Natural Colors; credits for the additional process. and color: Dr Paolo C. Fienga - Lunexit Team)133 visiteCaption NASA:"In this image, one is immediately drawn to the Rayed Crater in the upper right. Ives Crater, named in 1979 after American composer Charles Edward Ives, is smaller than many Unnamed Craters visible in this image, but it is younger and therefore brighter than its surrounding Terrain".
Date acquired: May, 20th, 2011
Image Mission Elapsed Time (MET): 214374721
Image ID: 276065
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filter: 7 (748 nanometers)
Center Latitude: 29,74° South
Center Longitude: 245,4° East
Resolution: 933 meters/pixel
Scale: the width of this image is approx. 677 Km
Incidence Angle: 49,0°
Emission Angle: 1,7°
Sun-Target-Spacecraft (such as "Phase") Angle: 50,7°MareKromiumLug 04, 2011
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