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ZZ-Mercury-Craters-Unnamed_Crater-PIA18246-PCF-LXTT-IPF.jpgIntersecting Craters (Absolute Natural Colors - Credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)83 visiteRunning diagonally though the scene (which is approx. 14 Km - such as about 8,69 miles - across), and running from the upper left (Sx) to the lower right (Dx) corner of the frame, you can see the Wall of an ancient Impact Ccrater that encompasses another Impact Crater known as Purcell. Purcell Crater and this other one (both quite large) are both pretty ancient, as evidenced by the numerous small Impact Craters that cover them, including their Walls. Furthermore, this High-Resolution Image taken by the NASA - MESSENGER Spacecraft on April, 11, 2014, also reveals how the small Impact Craters that formed on the Wall display some differences from the ones which formed on the Flat neighboring Surfaces. Frankly speaking, we, as IPF, honestly believe that the differences (mostly in shape) existing among these smaller Impact Craters that NASA is talknig about, may simply (and reasonalbly) be due to different Angles of Impact, rather than their age and/or the size of the Impactors that created them.
Date acquired: April, 11th, 2014
Image Mission Elapsed Time (MET): 39535979
Image ID: 6104625
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 81,25° North
Center Longitude: 212,20° East
Solar Incidence Angle: 81,4° (meaning that the Sun, at the time that the picture was taken, was about 8,6° above the imaged Local Mercurian Horizon)
Emission Angle: 36,3°
Sun-Mercury-Messenger (or "Phase") Angle: 82,5
This picture (which is an Original NASA - MESSENGER Spacecraft's b/w and Map-Projected image published on the NASA - Planetary Photojournal with the ID n. PIA 18246) has been additionally processed, contrast enhanced, Gamma corrected, magnified to aid the visibility of the details 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 outside, 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.MareKromiumMag 07, 2014
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ZZ-Mercury-Craters-Unnamed_Crater-PIA18247-PCF-LXTT-IPF.jpgUnnamed Crater with Hollows (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)72 visiteThis frame, obtained by the NASA - MESSENGER Spacecraft on Frebruary, 25, 2014, which shows us a Mercurian Northern Hemisphere's Unnamed Impact Crater - approx. 12,5 Km - such as about 7,76 miles in diameter -, suggested a question that we would like to ask you as much as ourselves: do those extremely common and bright (---> highly reflective) Mercurian Surface Features known as "Hollows" form preferentially on those Crater Walls (---> Inner and Outer Slopes as wll as thier Rims) which receive a more direct (---> and therefore intense) Sunlight?
In the Northern Hemisphere of Mercury, the Northern Walls of the Impact Craters are frequently flooded by a very intense Sunlight (meaning that they are almost always VERY well illuminated), while their Southern Walls only receive grazing Sunlight and therefore they are more often in Shadow; on the other hand (and we just say, "obviously"), in the Mercurian Southern Hemisphere, the Impact Craters' Northern Walls are the ones which receive just grazing Sunlight (and therefore are much less illuminated) while the Southern Walls get more direct (and therefore stronger) Sunlight. Said that, Planetary Scientists, on the base of their observations (mostly founded on the NASA - MESSENGER Spacecraft's images), believe that the greater the Solar Heating is experienced by the Walls of any given Impact Crater, the more Hollows will form on its (both Inner and Outer) Slopes and Rims (in other words: the direct Solar Illumination should reasonably be an important - if not decisive - factor in the formation of Hollows on the Walls of the Impact Craters located on both Mercury's Hemispheres).
Images like the one here can help us to answer this question and what we see in today's APOD is found in an area of focus (---> interest) for the current NASA - MESSENGER Spacecraft's Low-Altitude Imaging Campaign. Perhaps, in the (near) future, we may know more about all this: let's just wait an see what happens...
Date acquired: February, 25th, 2014
Image Mission Elapsed Time (MET): 35646241
Image ID: 5828285
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 42,92° North
Center Longitude: 330,90° East
Solar Incidence Angle: 43,5° (meaning that the Sun, at the time that the picture was taken, was about 46,5° above the imaged Local Mercurian Horizon)
Emission Angle: 46,1°
Sun-Mercury-Messenger (or "Phase") Angle: 30,1
This picture (which is an Original NASA - MESSENGER Spacecraft's b/w and NON-Map-Projected image published on the NASA - Planetary Photojournal with the ID n. PIA 18247) has been additionally processed, contrast enhanced, Gamma corrected, magnified to aid the visibility of the details 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 outside, 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.MareKromiumMag 07, 2014
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Titan-South_Polar_Vortex-PIA17163-PCF-LXTT-IPF.jpgDouble Crescent (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/IPF)66 visiteTitan's South Polar Vortex mimics the moon itself, creating - as you can (barely) see in this frame, taken by the NASA - Cassini Spacecraft on December, 1, 2013 - a somehow elegant "crescent within a crescent". In fact, situated above the (surrounding) South Polar Atmosphere, the raised Walls of the Vortex, which stand along its Sunward Side, can just catch the grazing Sunlight, thus creating a "crescent" of its own. Titan (that, as you should know by now, is approx. 3200 miles - such as about 5149,88 Km - across) is Saturn's largest moon and possesses an extremely dense and ultra-dynamic Atmosphere, whose true characteristics are still a mistery.
Speaking of unanswered questions as well as problems which are still unsolved, we have to say - as IPF - that the true nature (---> meaning Seasonal or Permanent) of the South Polar Vortex keeps being, up to now, an highly controversial subject in the Planetary Scientists' Community. However, a definitive answer about the aforementioned question - and we like to say "obviously" -, will come, in a way or another, in time. For now, the only - truly - wise thing to do, is to keep looking...
This view looks toward the Trailing Hemisphere of Titan and North is up. The image was taken with the NASA - Cassini Spacecraft Wide-Angle Camera - as we wrote herebefore - on December, 1, 2013, by using a Spectral Filter which preferentially admits Wavelengths of Near-InfraRed Light centered at 939 nanometers. This frame was obtained at a distance of approximately 108.000 miles (such as about 173.808,72 Km) from Titan and the scale is roughly 6 miles (such as approx. 9,65 Km ) per pixel.
This frame (which is an Original NASA - CASSINI Spacecraft's b/w and NON Map-Projected image published on the NASA - Planetary Photojournal with the ID n. PIA 17163) has been additionally processed, contrast enhanced, magnified to aid the visibility of the details, Gamma corrected and then colorized - according to an educated guess (or, if you wish, an informed speculation) carried out by Dr Paolo C. Fienga - in Absolute Natural Colors (such as the colors that a human eye would actually perceive if someone were onboard the NASA - Cassini Spacecraft and then looked outside, towards the Saturnian moon "Titan"), 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 (Gases) present in the Atmosphere of Titan, each having a different Albedo (---> Reflectivity) and Chemical Composition.
Note: it is possible (but we, as IPF, have no way to be one-hundred-percent sure of such a circumstance), that the actual luminosity of Titan - as it is in this frame - would appear, to an average human eye, a little bit lower than it has been shown (or, better yet: interpreted) here.MareKromiumMag 07, 2014
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Titan-MF-EB-PCF-LXTT-IPF.jpgLakeland (Absolute Natural Colors; credits for the additional process. and color.: Elisabetta Bonora and Marco Faccin/LXTT/IPF)133 visiteUn esempio di come cambia la "visione" di un Mondo, quando si passa dai Colori Naturali (ossia i colori di un Corpo Celeste visti attraverso "Occhi Elettronici") ai Colori Naturali Assoluti (ossia i colori di un Corpo Celeste visti attraverso "Occhi Umani Medi"). Si noti, per Diritto ai Crediti e per Onestà Intellettuale, che la dizione "Colori Naturali Assoluti" è il prodotto di una tecnica di colorizzazione delle immagini totalmente basata sull'impiego di "Luci Virtuali", è un prodotto "Lunar Explorer Italia/Italian Planetary Foundation" e, per quanto attiene il suo "merito", poggia su assunzioni che, sebbene razionali e scientificamente accettabili (visione media, percezione dei colori media e percezione della luminosità media nell'occhio umano), nei fatti potrebbero rivelarsi errate. Questo solo per dire che noi NON pretendiamo di avere la Verità fra le mani, ma applichiamo un Approccio Razionale nella ricerca della Verità stessa.MareKromiumGen 30, 2014
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Titan-MF-EB-LXTT-IPF~0.jpgLakeland (Natural Colors; credits for the additional process. and color.: Elisabetta Bonora and Marco Faccin/LXTT/IPF)101 visiteIl Polo Nord di Titano, con i suoi Grandi Laghi di "Idrocarburi Affioranti" che emergono dalla nebbia. Bellissima.MareKromiumGen 30, 2014
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ZZ-Mercury-Craters-To_Ngoc_Van_Crater-PIA15201-PCF-LXTT-IPF-01.jpgTo Ngoc Van (EDM - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)105 visiteIn this beautiful Extra Detail Magnification (or "EDM" for short) which has been taken from a picture obtained by the NASA - MESSENGER Spacecraft on November, 8, 2011, we can see, once again, prominent, near the center of the degraded Impact Crater To Ngoc Van, an interesting (and really irregularly shaped) Collapse Pit (approx. 20 Km - such as about 12,42 miles - across). As a matter of fact, many samples of Impact Craters with one (or more) Collapse Pit/s located on their Floors, have already been identified across the Mercurian Surface and - most likely - they all formed as a consequence of (extremely ancient) phenomena of Explosive Volcanism. To be more specific, we, as IPF, do believe that the aforementioned phenomena of Explosive Volcanism that caused the formation of Pits inside a great number of Mercurian Impact Craters, was, most likely, triggered by the Impacts themselves and the subsequent powerful Shock-Waves that deeply altered the Sub-Surface of a Planet which - at the time when most of the Impacts took place - was still Geoilogically Active (we could say that, in those - remote - times when its Surface was so heavily battered, Mercury was, however, still "alive" - at least from a Geological point of view).
Date acquired: November, 8th, 2011
Image Mission Elapsed Time (MET): 229277972
Image ID: 988708
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 52,89° North
Center Longitude: 248,60° East
Solar Incidence Angle: 60,3° (meaning that the Sun, at the time that the picture was taken, was about 29,7° above the imaged Local Mercurian Horizon)
Emission Angle: 23,0°
Sun-Mercury-Messenger (or "Phase") Angle: 83,4°
This picture (which is a crop taken from an Original NASA - MESSENGER Spacecraft's b/w and Map-Projected image published on the NASA - Planetary Photojournal with the ID n. PIA 15201) has been additionally processed, contrast enhanced, Gamma corrected, magnified to aid the visibility of the details 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 outside, 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.MareKromiumGen 30, 2014
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ZZ-Mercury-Craters-To_Ngoc_Van_Crater-PIA15201-PCF-LXTT-IPF-00.jpgTo Ngoc Van (CTX Frame - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)94 visiteIn this beautiful view obtained by the NASA - MESSENGER Spacecraft on November, 8, 2011, we can see, once again, prominent, near the center of the degraded Impact Crater To Ngoc Van, an interesting (and really irregularly shaped) Collapse Pit (approx. 20 Km - such as about 12,42 miles - across). As a matter of fact, many samples of Impact Craters with one (or more) Collapse Pit/s located on their Floors, have already been identified across the Mercurian Surface and - most likely - they all formed as a consequence of (extremely ancient) phenomena of Explosive Volcanism.
Date acquired: November, 8th, 2011
Image Mission Elapsed Time (MET): 229277972
Image ID: 988708
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 52,89° North
Center Longitude: 248,60° East
Solar Incidence Angle: 60,3° (meaning that the Sun, at the time that the picture was taken, was about 29,7° above the imaged Local Mercurian Horizon)
Emission Angle: 23,0°
Sun-Mercury-Messenger (or "Phase") Angle: 83,4°
This picture (which is an Original NASA - MESSENGER Spacecraft's b/w and Map-Projected image published on the NASA - Planetary Photojournal with the ID n. PIA 15201) has been additionally processed, contrast enhanced, Gamma corrected, magnified to aid the visibility of the details 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 outside, 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.MareKromiumGen 30, 2014
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Europa-Ridges-PIA17737-PCF-LXTT-IPF-1.jpgFeatures of Europa (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)102 visiteThis image, taken by the NASA - Galileo Spacecraft on February, 2, 1999, shows us huge Cracks and Ridges on the Surface of the Jovian moon Europa. These (absolutely fascinating) Features reveal a complex Geologic History of Europa. Some Ridges, such as the prominent one, at the top right of the frame, develop into several long, arc-shaped "Cycloids" (---> a Cycloid is the curve traced by a point on the rim of a circular wheel as the wheel rolls along a straight line), that could reasonably be related to the changing Tidal Forces as Europa orbits the Gas-Giant Planet Jupiter. The Wall of this Ridge stands perhaps a third of a mile (approx. 0,5 Km) above the surrounding Ridged Plains, although their Edges are - likely - NOT as steep as they appear in this view.
The view was captured by the NASA - Galileo Spacecraft on February 2, 1999, during its E19 orbit, when the spacecraft was about 2500 miles (such as approx. 4023 km) from the Surface of Europa. The Resolution in the scene is roughly 295 feet (such as approx. 89.91 meters) per pixel. North is toward bottom left side of the picture.
This frame (which is a crop taken from an Original NASA - Galileo Spacecraft enhanced color image published on the NASA - Planetary Photojournal with the ID n. PIA 17737) has been additionally processed, contrast enhanced, magnified to aid visibility of the Surface details and then re-colorized, according to an educated guess carried out by Dr Paolo C. Fienga/LXTT/IPF, in what they should be its Absolute Natural Colors (such as the colors that a human eye would actually perceive if someone were onboard the NASA - Galileo Spacecraft and then looked outside, towards the Surface of the Jovian moon Europa), 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 others, the existence of different Elements present on the Surface of Europa, each having a different Albedo (---> Reflectivity) and Chemical Composition.
Note: it is possible (but we, as IPF, have no way to be one-hundred-percent sure of such a circumstance), that the actual luminosity of Europa- as it is in this frame - would appear, to an average human eye, a little bit lower than it has been shown (or, better yet: interpreted) here.MareKromiumGen 30, 2014
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ZZ-Mercury-Craters-Unnamed_Craters-PIA17827-PCF-LXTT-IPF-2.jpgMercurian Nightfall (EDM - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)94 visiteWith the Sun already extremely low in the Sky over this Mercurian Region located in the Northern Hemisphere of the Innermost Planet of the Solar System (the Sun is only about 8° above the imaged Local Horizon), the long, deep and dark Shadows created by this specific Spatial Configuration, accentuate the very uneven (---> highly irregular) nature of the Terrain.
This picture, which is just a Magnified Crop taken from yesterdy's frame, shows, to the most attentive Viewers, a very unusually-looking Surface Feature whose origin and nature cannot be identified with certainty. However, it could - probably - be an oblong Secondary Crater with a strange - and still illuminated - Central Peak, or, maybe, a Wall-like Relief that divides the Floor of a Pit Crater. Again, as we said herebefore, a definitive answer about what we are actually looking at, cannot be given at this time.
The Feature here, if you wish to take a look at the so-called Contextual Image (CTX Frame), is located on the lower portion of the frame, slightly towards the left (Sx).
Date acquired: November, 12th, 2013
Image Mission Elapsed Time (MET): 26543484
Image ID: 5181047
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 67,11° North
Center Longitude: 249,80° East
Solar Incidence Angle: 82,0° (meaning that the Sun, at the time that the picture was taken, was about 8,0° above the imaged Local Mercurian Horizon)
Emission Angle: 36,9°
Sun-Mercury-Messenger (or "Phase") Angle: 118,9°
This picture (which is a crop taken by an Original NASA - MESSENGER Spacecraft's b/w and NON-Map-Projected image published on the NASA - Planetary Photojournal with the ID n. PIA 17827) has been additionally processed, contrast enhanced, Gamma corrected, magnified to aid the visibility of the details 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 outside, 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.MareKromiumGen 30, 2014
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ZZ-Mercury-Craters-Unnamed_Craters-PIA17827-PCF-LXTT-IPF-00.jpgMercurian Nightfall (CTX Frame - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)91 visiteWith the Sun already extremely low in the Sky over this Mercurian Region located in the Northern Hemisphere of the Innermost Planet of the Solar System (the Sun is only about 8° above the imaged Local Horizon), the long, deep and dark Shadows created by this specific Spatial Configuration, accentuate the very uneven (---> highly irregular) nature of the Terrain.
In fact, the Surface visible here (---> we are looking at a scene which is about 14,6 Km - such as a very little more than 9 miles - across) has been battered - for eons and eons - by a countless number of Meteors and other Cosmic Impactors, until the Hilly Surface that exists and we can see today was finally created. For the most attentive Viewers, we, as IPF, strongly suggest you to take a careful look at the (very unusually-looking) Surface Feature (probably an oblong Secondary Crater with a strange - and still illuminated - Central Peak) that is located on the lower portion of the frame, slightly towards the left (Sx).
Date acquired: November, 12th, 2013
Image Mission Elapsed Time (MET): 26543484
Image ID: 5181047
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 67,11° North
Center Longitude: 249,80° East
Solar Incidence Angle: 82,0° (meaning that the Sun, at the time that the picture was taken, was about 8,0° above the imaged Local Mercurian Horizon)
Emission Angle: 36,9°
Sun-Mercury-Messenger (or "Phase") Angle: 118,9°
This picture (which is an Original NASA - MESSENGER Spacecraft's b/w and NON-Map-Projected image published on the NASA - Planetary Photojournal with the ID n. PIA 17827) has been additionally processed, contrast enhanced, Gamma corrected, magnified to aid the visibility of the details 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 outside, 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.MareKromiumGen 30, 2014
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Titan-PIA17151-PCF-LXTT-IPF.jpgTitanian Restlessness (Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)86 visiteTitan's restless Upper Atmosphere puts on a display with the "detached" Haze to the North (---> the so-called "North Polar Hood" - top of image) and the Polar Vortex to the South.
This view looks toward the Saturn-facing Hemisphere of Titan; North is up and rotated 24° to the left. The image was taken with the NASA - Cassini Spacecraft Narrow-Angle Camera on August 20, 2013 using a Spectral Filter sensitive to Wavelengths of Near-InfraRed Light centered at 889 nanometers. The view was obtained at a distance of approximately 1,6 Million Miles (such as a little less than 2,575 Million KiloMeters) from Titan; the image scale is roughly 9 miles (such as approx. 14,484 Km) per pixel.
This frame (which is an Original NASA - CASSINI Spacecraft's b/w and NON Map-Projected image published on the NASA - Planetary Photojournal with the ID n. PIA 17151) has been additionally processed, contrast enhanced, magnified to aid the visibility of the details, Gamma corrected and then colorized - according to an educated guess (or, if you wish, an informed speculation) carried out by Dr Paolo C. Fienga - in Absolute Natural Colors (such as the colors that a human eye would actually perceive if someone were onboard the NASA - Cassini Spacecraft and then looked outside, towards the Saturnian moon "Titan"), 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 (Gases) present in the Atmosphere of Titan, each having a different Albedo (---> Reflectivity) and Chemical Composition.
Note: it is possible (but we, as IPF, have no way to be one-hundred-percent sure of such a circumstance), that the actual luminosity of Titan - as it is in this frame - would appear, to an average human eye, a little bit lower than it has been shown (or, better yet: interpreted) here.MareKromiumGen 25, 2014
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ZZ-Mercury-Rupes-Terror_Rupes-PIA17881-PCF-LXTT-IPF-01.jpgTerror Rupes (EDM - Absolute Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/Italian Planetary Foundation)80 visiteIn this picture, we can better see the Southern Mercurian Relief known as "Terror Rupes": it is the long, Cliff-like Landform visible right in the middle of the frame. Terror Rupes is one of Mercury's most prominent Lobate Scarps, and it was so named after the HMS (---> Her Majesty's Ship) Terror: an eighteenth-century warship that, later, participated in Scientific Polar Explorations.
Date acquired: February, 4th, 2012
Image Mission Elapsed Time (MET): 236853865
Image ID: 1353252
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 69,30° South
Center Longitude: 96,00° East
Solar Incidence Angle: 80,3° (meaning that the Sun, at the time that the picture was taken, was about 9,7° above the imaged Local Mercurian Horizon)
Emission Angle: 50,9°
Sun-Mercury-Messenger (or "Phase") Angle: 114,5°
This picture (which is a crop taken from an Original NASA - MESSENGER Spacecraft's b/w and NON-Map-Projected image published on the NASA - Planetary Photojournal with the ID n. PIA 17881) has been additionally processed, contrast enhanced, Gamma corrected, magnified to aid the visibility of the details 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 outside, 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.MareKromiumGen 25, 2014
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