File:Mercury_in_color_-_Prockter07.jpg
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Descriere fișier
DescriereMercury in color - Prockter07.jpg |
English: Full color image of from first MESSENGER flyby |
Dată | |
Sursă | NASA/JPL [1] |
Autor | NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington |
Alte versiuni | color version of Image:MESSENGER first photo of unseen side of mercury.jpg |
MESSENGER's Wide Angle Camera (WAC), part of the Mercury Dual Imaging System (MDIS), is equipped with 11 narrow-band color filters. As the spacecraft receded from Mercury after making its closest approach on January 14, 2008, the WAC recorded a 3x3 mosaic covering part of the planet not previously seen by spacecraft. The color image shown here was generated by combining the mosaics taken through the WAC filters that transmit light at wavelengths of 1000 nanometers (infrared), 700 nanometers (far red), and 430 nanometers (violet). These three images were placed in the red, green, and blue channels, respectively, to create the visualization presented here. The human eye is sensitive only across the wavelength range from about 400 to 700 nanometers. Creating a false-color image in this way accentuates color differences on Mercury's surface that cannot be seen in black-and-white (single-color) images.
Color differences on Mercury are subtle, but they reveal important information about the nature of the planet's surface material. A number of bright spots with a bluish tinge are visible in this image. These are relatively recent impact craters. Some of the bright craters have bright streaks (called "rays" by planetary scientists) emanating from them. Bright features such as these are caused by the presence of freshly crushed rock material that was excavated and deposited during the highly energetic collision of a meteoroid with Mercury to form an impact crater. The large circular light-colored area in the upper right of the image is the interior of the Caloris basin. Mariner 10 viewed only the eastern (right) portion of this enormous impact basin, under lighting conditions that emphasized shadows and elevation differences rather than brightness and color differences. MESSENGER has revealed that Caloris is filled with smooth plains that are brighter than the surrounding terrain, hinting at a compositional contrast between these geologic units. The interior of Caloris also harbors several unusual dark-rimmed craters, which are visible in this image. The MESSENGER science team is working with the 11-color images in order to gain a better understanding of what minerals are present in these rocks of Mercury's crust.
The diameter of Mercury is about 4880 kilometers (3030 miles). The image spatial resolution is about 2.5 kilometers per pixel (1.6 miles/pixel). The WAC departure mosaic sequence was executed by the spacecraft from approximately 19:45 to 19:56 UTC on January 14, 2008, when the spacecraft was moving from a distance of roughly 12,800 to 16,700 km (7954 to 10377 miles) from the surface of Mercury.Licențiere
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Acest fişier este în domeniul public fiindcă a fost creat de NASA. Politica drepturilor de autor a NASA spune că „Materialul NASA nu este protejat de dreptul de autor atâta timp cât nu se precizează altfel”. (NASA copyright policy page sau JPL Image Use Policy). | ![]() |
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Istoricul fișierului
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Data și ora | Miniatură | Dimensiuni | Utilizator | Comentariu | |
---|---|---|---|---|---|
actuală | 19 octombrie 2016 03:53 | ![]() | 3.000x2.025 (1,26 MB) | Paul 012 | Reverted to version as of 06:16, 18 February 2008 (UTC) - Most uses of this file are expecting the rectangular crop. |
17 august 2016 05:31 | ![]() | 2.072x2.025 (1,04 MB) | Balsupli | Reverted to version as of 01:52, 31 January 2008 (UTC) | |
18 februarie 2008 09:16 | ![]() | 3.000x2.025 (1,26 MB) | Mattflaschen | Reverted to version as of 01:42, 31 January 2008 | |
31 ianuarie 2008 04:52 | ![]() | 2.072x2.025 (1,04 MB) | Kwamikagami | ||
31 ianuarie 2008 04:42 | ![]() | 3.000x2.025 (1,26 MB) | Kwamikagami | {{Information |Description=Full color image of Mercury from first MESSENGER flyby |Source=NASA/APL |Date=2008 Jan 30 |Author=NASA |Permission=public |other_versions=color version of Image:MESSENGER first photo of unseen side of mercury.jpg }} MESSENG |
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Informații
Acest fișier conține informații suplimentare, introduse probabil de aparatul fotografic digital sau scannerul care l-a generat. Dacă fișierul a fost modificat între timp, este posibil ca unele detalii să nu mai fie valabile.
Orientare | Normală |
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Rezoluție orizontală | 300 dpi |
Rezoluție verticală | 300 dpi |
Software folosit | Adobe Photoshop CS3 Macintosh |
Data și ora modificării fișierului | 23 ianuarie 2008 22:34 |
Spațiu de culoare | sRGB |
Lățimea imaginii | 3.000 px |
Înălțimea imaginii | 2.025 px |
Data și ora digitizării | 23 ianuarie 2008 17:34 |
Data ultimei modificări a metadatelor | 23 ianuarie 2008 17:34 |
Versiune IIM | 2 |