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File:MarsCuriosityRover-HiddenValley-WheelCloseup-20140806.jpg

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English: NASA's Mars rover Curiosity acquired this image using its Mars Hand Lens Imager (MAHLI), located on the turret at the end of the rover's robotic arm, on August 6, 2014, Sol 711 of the Mars Science Laboratory Mission, at 15:35:12 UTC.

When this image was obtained, the focus motor count position was 12660. This number indicates the internal position of the MAHLI lens at the time the image was acquired. This count also tells whether the dust cover was open or closed. Values between 0 and 6000 mean the dust cover was closed; values between 12500 and 16000 occur when the cover is open. For close-up images, the motor count can in some cases be used to estimate the distance between the MAHLI lens and target. For example, in-focus images obtained with the dust cover open for which the lens was 2.5 cm from the target have a motor count near 15270. If the lens is 5 cm from the target, the motor count is near 14360; if 7 cm, 13980; 10 cm, 13635; 15 cm, 13325; 20 cm, 13155; 25 cm, 13050; 30 cm, 12970. These correspond to image scales, in micrometers per pixel, of about 16, 25, 32, 42, 60, 77, 95, and 113.

Most images acquired by MAHLI in daylight use the sun as an illumination source. However, in some cases, MAHLI's two groups of white light LEDs and one group of longwave ultraviolet (UV) LEDs might be used to illuminate targets. When Curiosity acquired this image, the group 1 white light LEDs were off, the group 2 white light LEDs were off, and the ultraviolet (UV) LEDS were off.

(This description courtesy of NASA/JPL-Caltech.)
Date Taken on 6 August 2014, 15:35:12 UTC
Source http://mars.jpl.nasa.gov/msl/multimedia/raw/?rawid=0711MH0002620000204349E01_DXXX&s=711
Author NASA/JPL-Caltech

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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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6 August 2014

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current11:50, 7 August 2014Thumbnail for version as of 11:50, 7 August 20141,632 × 1,200 (583 KB)EniagromUser created page with UploadWizard

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