1909 "VDB" Penny On NASA's Mars Rover
1909 "VDB" Penny On NASA's Mars Rover
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Calibration Target on Curiosity for Camera on Rover's Arm
Source: nasa.gov via FUN on Pinterest
Calibration Target on Curiosity for Camera on Rover's Arm
The Mars Hand Lens Imager (MAHLI) camera at the end of the robotic arm of NASA's Curiosity rover will use a calibration target attached to a shoulder joint of the arm.
This image combines a close-up of the calibration target with a view of the rover to illustrate the target's location on the rover. The MAHLI calibration target includes a penny, color chips, a metric standardized bar graphic, and (just below the penny) a stair-step pattern for depth calibration.
Continuing Reading On NASA Website
Lincoln Penny on Mars in Camera's Calibration Target
Source: nasa.gov via FUN on Pinterest
Image Credit: NASA/JPL-Caltech/Malin Space Science Systems
Lincoln Penny on Mars in Camera's Calibration Target
The penny in this image is part of a camera calibration target on NASA's Mars rover Curiosity. The Mars Hand Lens Imager (MAHLI) camera on the rover took this and other images of the MAHLI calibration target during the 34th Martian day, or sol, of Curiosity's work on Mars (Sept. 9, 2012).
The image was acquired with MAHLI at a distance of 5 centimeters (2 inches). MAHLI can acquire images of even higher resolution and can be positioned as close as 2.5 centimeters (about 1 inch); however, as this is the first checkout of the robotic arm, it was decided not to attempt to place the MAHLI at its closest focus distance during this test. The image shows that the calibration target has a coating of Martian dust on it. This is unsurprising — the target was facing directly toward the plume of dust stirred up by the sky crane's descent engines during the final phase of the 6 August 2012 landing.
The penny is a nod to geologists' tradition of placing a coin or other object of known scale as a size reference in close-up photographs of rocks, and it gives the public a familiar object for perceiving size easily when it will be viewed by MAHLI on Mars.
The specific coin, provided by MAHLI's principal investigator, Ken Edgett, is a 1909 "VDB" penny. That was the first year Lincoln pennies were minted and the centennial of Abraham Lincoln's birth. The VDB refers to the initials of the coin's designer, Victor D. Brenner, which are on the reverse side. Brenner based the coin's low-relief portrait of Lincoln on a photograph taken Feb. 9, 1864, by Anthony Berger in the Washington, D.C. studio of Mathew Brady.
Continuing Reading On NASA Website
Other Articles On NASA's Website involving U.S. Coins NASA
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