| Risultati della ricerca nelle immagini - "Terminator" |
APOLLO_12_AS_12-50-7438-1.jpgAS 12-50-7438 - Lunar Terminator (True Colors; credits: Dr Marco Faccin)96 visitenessun commentoMareKromium
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MartianTerminator-TRA_000841_1300_RED.jpgHalf in the light and half in the darkness... (possible True Colors; credis: Lunar Explorer Italia)53 visiteCaption NASA originale:"Image TRA_000841_1300 was taken by the High Resolution Imaging Science Experiment (HiRISE) camera onboard the Mars Reconnaissance Orbiter spacecraft on October 1, 2006. The complete image is centered at 49,7° South Lat. and 154,2° East Long. The range to the target site was 248,4 Km (such as about 155,3 miles).
At this distance the image scale is 99,4 cm/pixel (with 4 x 4 binning) so objects ~298 cm across are resolved. The image shown here has been map-projected to 100 cm/pixel and North is up. The image was taken at a MLT of 15:39 and the scene is illuminated from the West with a solar incidence angle of 87°, thus the Sun was about 3° above the horizon.
At a Solar Longitude of 114,2°, the season on Mars is Northern Summer". MareKromium
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ZZ-Mercury-Terminator-PIA14357.jpgMercurian Terminator (credits for the additional process. and color.: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington)79 visiteCaption NASA:"The Terminator of Mercury, shown here in color, is the line between light and dark, or day and night. On Mercury, three days are equivalent to two years or, in other words, the Planet spins around its axis three times for every two orbits around the Sun. The first Mercury year of the MESSENGER mission ended on Monday, June 13, 2011".
Date acquired: June 07, 2011
Image Mission Elapsed Time (MET): 215945273, 215943853, 215945277
Image ID: 349804, 349803, 349805
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filter: 9 (1000 nanometers), 7 (750 nanometers), 6 (430 nanometers)
Center Latitude: 79,32° South
Center Longitude: 173,9° East
Resolution: 1715 meters/pixel
Scale: the approximate width of the image is 1840 KmMareKromium
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ZZ-Mercury-Terminator-PIA17229-PCF-LXTT-IPF.jpgSouthern Terminator (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)96 visiteThis image-mosaic was created by combining two frames that were taken only 96 seconds apart from each other. It is obvious that the NASA - MESSENGER Spacecraft has to be farther away from the Planet Mercury (and, precisely, it must be in the Southern portion of its orbit) to acquire views like these. Mercury's heavily Cratered Surface is very well and really dramatically highlighted here - particularly in the Regions near the Terminator (such as the Boundary Line existing between the Sunlit Dayside and the Dark Nightside of the Planet) -, thus reflecting its, in a way, "violent" history; an history which saw this always mysterious and fascinating Celestial Body being impacted by thousands and thousands of objects (i.e.: Meteors, Comets and, probably, even a few small Asteroids), through the ages.
Date acquired: May 7th, 2013
Images Mission Elapsed Time (MET): 10234404, 10234500
Images ID: 4021801, 4021802
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 60,00° South
Center Longitude: 260,00° East
This picture (which is an Original NASA - MESSENGER Spacecraft's b/w Map-Projected frame published on the NASA - Planetary Photojournal with the ID n. PIA 17229) has been additionally processed, contrast enhanced, magnified and then colorized in Absolute Natural Colors (such as the colors that a human eye would actually perceive if someone were onboard the NASA - MESSENGER Spacecraft and then looked down, towards the Surface of Mercury), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team. Different colors, as well as different shades of the same color, mean, among other things, the existence of different Elements (Minerals) present on the Surface of Mercury, each having a different Albedo (---> Reflectivity) and Chemical Composition.MareKromium
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ZZ-Mercury-Terninator_Line-PIA16360-PCF-LXTT-IPF.jpgMercurian Terminator (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)88 visiteThis striking image shows the progression of Daylight across the Surface of Mercury and the line separating the night from the day is called "Terminator". Scientists have studied interesting phenomena occurring near the Terminator of the Moon for years. Such occurrences involve the interaction between Lunar Dust and Charged Solar Particles (---> the Ions making the Solar Wind). Because Mercury's Regolith is exposed to almost ten times as many Charged Particles as the Moon, it is an excellent place to study the effects of Solar Radiation on Surface Materials. In this unprojected image, North is to the right.
This image was acquired as part of MDIS's campaign to monitor the South Polar Region of Mercury. By imaging the Polar Regions approximately every 4 (four) MESSENGER orbits as illumination conditions change, the Surface Features that were in the shadows on earlier orbits, can be discerned and any permanently shadowed areas can also be identified after repeated imaging over One Solar Day. During MESSENGER's one-year primary mission, MDIS's WAC was used to monitor the South Polar Regions for the first Mercury Solar Day (which corresponds to 176 Earth Days), and MDIS's NAC made repeated images of the South Polar Regions during the second Mercury Solar Day.
Date acquired: August 01, 2011
Image Mission Elapsed Time (MET): 220726567
Image ID: 579208
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filter: 7 (748 nanometers)
Center Latitude: 84.97° South Lat.
Center Longitude: 75,81° East Long.
Resolution: 1500 meters/pixel
Scale: the large crater at the bottom center is approx. 155 km (such as about 96 miles) in diameter.
Solar Incidence Angle: 84,9° (meaning that the Sun, at the picture was taken, was about 5,1° above the Imaged Local Horizon)
Emission Angle: 23,8°
Sun-Mercury-MESSENGER (or "Phase") Angle: 97,0°MareKromium
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as08-14-2399.JPGAS 08-14-2399 - The Dark Side of the Moon (3 - natural colors; credits: Lunexit)56 visiteImage Collection: 70mm Hasselblad
Mission: 8
Magazine: 14
Magazine Letter: B
Latitude: approx. 3,0° South
Longitude: approx: 155,0° West
Lens Focal Length: 250 mm
Description: NEAR TERMINATOR; FARSIDE
Film Type: SO-368
Film Width: 70 mm
Film Color: colorMareKromium
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as08-14-2400.JPGAS 08-14-2401 - The Dark Side of the Moon (4 - natural colors; credits: Lunexit)53 visiteImage Collection: 70mm Hasselblad
Mission: 8
Magazine: 14
Magazine Letter: B
Latitude: approx. 3,0° South
Longitude: approx. 155,5° West
Lens Focal Length: 250 mm
Description: NEAR TERMINATOR; FARSIDE
Film Type: SO-368
Film Width: 70 mm
Film Color: color
MareKromium
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as08-14-2401.JPGAS 08-14-2401 - The Dark Side of the Moon (5 - natural colors; credits: Lunexit)55 visiteImage Collection: 70mm Hasselblad
Mission: 8
Magazine: 14
Magazine Letter: B
Latitude: approx. 3,0° South
Longitude: approx. 156,0° West
Lens Focal Length: 250 mm
Description: NEAR TERMINATOR; FARSIDE
Film Type: SO-368
Film Width: 70 mm
Film Color: colorMareKromium
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as08-14-2402.JPGAS 08-14-2402 - The Dark Side of the Moon (6 - MULTISPECTRUM; credits: Lunexit)54 visiteImage Collection: 70mm Hasselblad
Mission: 8
Magazine: 14
Magazine Letter: B
Latitude: approx. 3,0° South
Longitude: approx. 157,0° West
Lens Focal Length: 250 mm
Description: NEAR TERMINATOR; FARSIDE
Film Type: SO-368
Film Width: 70 mm
Film Color: colorMareKromium
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as12-51-7547.jpgAS 12-51-7547 - Approaching the Lunar Terminator (unusual shadows)67 visitenessun commentoMareKromium
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as12-51-7550.jpgAS 12-51-7550 - Shadowland, near the Lunar Terminator (1)53 visitenessun commentoMareKromium
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as12-51-7551.jpgAS 12-51-7551 - Shadowland, near the Lunar Terminator (2)53 visitenessun commentoMareKromium
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