File:Couperin crater PIA18994.jpg

English: The largest impact crater in this color view is Couperin, roughly 85 km (53 mi.) in diameter. Couperin is slightly elongated from WNW to ESE, partly due to substantial wall collapse that has formed terraces. Low reflectance material (LRM) dominates most of the surface around the crater's exterior. The interior consists of material that is not as dark, and which has a reddish color in places. The small central peak appears to be composed of LRM. Several bright ray segments cross Couperin and the surrounding plains.

Francois Couperin (1688-1733) was an influential French Baroque composer. The most accomplished member of a musically talented family, he is sometimes called "Couperin le Grand". Couperin was a court composer and organist. He was a virtuoso harpsichordist, composed many pieces for the harpsichord, and wrote a book on the technique of harpsichord playing.

This image was acquired as part of MDIS's high-resolution 3-color imaging campaign. The map produced from this campaign 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.

Date acquired: June 10, 2012 Image Mission Elapsed Timedeg. (MET): 247799000, 247798992, 247798996 Image ID: 1988163, 1988161, 1988162 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: 28.8° Center Longitude: 206.6° Resolution: 249 meters/pixel Scale: The edges of the image are about 240 km (149 mi.) long Incidence Angle: 40.7° Emission Angle: 0.1° Phase Angle: 40.8°

North is up in this image.