This image shows the Al Hamadhani impact basin. In this three color image, color is analogous to composition. Some parts of the basin appear more blue than the surrounding material, indicating compositional variation across the basin itself. This variation in composition makes this basin an interesting target for scientists. The basin is named for Badi' al-Zaman al-Hamadhani, an Iranian author who lived over a thousand years ago. He is best known for his collection of stories featuring a rogue named Abu al-Fath al-Iskandari. He is also known as "the wonder of the age."
This image was acquired as part of MDIS's high-resolution 3-color imaging campaign. The 3-color campaign is a major mapping activity in MESSENGER's extended mission. It complements the 8-color base map (at an average resolution of 1 km/pixel) acquired during MESSENGER's primary mission by imaging Mercury's surface in a subset of the color filters at the highest resolution possible. The three narrow-band color filters are centered at wavelengths of 430 nm, 750 nm, and 1000 nm, and image resolutions generally range from 100 to 400 meters/pixel in the northern hemisphere.
April 02, 2012
Image Mission Elapsed Time (MET): 241878696, 241878688, 241878692
Image ID: 1597093, 1597091, 1597092
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filters: 9, 7, 6 (996, 748, 433 nanometers) in red, green, and blue
Center Latitude: 38.89°
Center Longitude: 269.7° E
Resolution: 207 meters/pixel
Scale: The basin that dominates this image, named Al Hamadhani, is 168 km (104 mi) across.
Incidence Angle: 54.3°
Emission Angle: 0.2°
Phase Angle: 54.4°
The MESSENGER spacecraft is the first ever to orbit the planet Mercury, and the spacecraft's seven scientific instruments and radio science investigation are unraveling the history and evolution of the Solar System's innermost planet. Visit the Why Mercury? section of this website to learn more about the key science questions that the MESSENGER mission is addressing. During the one-year primary mission, MDIS acquired 88,746 images and extensive other data sets. MESSENGER is now in a year-long extended mission, during which plans call for the acquisition of more than 80,000 additional images to support MESSENGER's science goals.
These images are from MESSENGER, a NASA Discovery mission to conduct the first orbital study of the innermost planet, Mercury. For information regarding the use of images, see the MESSENGER image use policy .
|Instrument||Mercury Dual Imaging System (MDIS)|
|Extra Keywords||Color, Map, Radio|
|Date in Caption||2012-04-02|
|Image Credit||NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington|