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Rover B Inpects It's Headshied Up Close

With nearly a year of detailed science work completed, the Opportunity team has driven up to the MER-B heatshield for a closer inspection before heading south to an area of "etched terrain".
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  • Pasadena CA (JPL) Jan 06, 2005
    Opportunity is healthy and has reached the site where its heat shield hit the ground. The rover will make detailed observations of the heat shield's remains, weather permitting.

    The rover experienced its first dust storm since landing, which has affected the amount of energy Opportunity gets each sol.

    When the rover landed nearly one Earth year ago, a dust storm was subsiding and the atmosphere had an opacity of 0.9 (the higher the number, the murkier the skies).

    Since then, the opacity had improved significantly and was roughly 0.5 on sol 327. On sol 328 the opacity jumped to 0.6 then to 0.8, 1.2, and 1.25 on sols 329-331. As of sol 332 it is at 1.2 and dropping. Images from Mars Global Surveyor orbiter have confirmed the presence of a few small dust storms in the region.

    The energy intake has decreased roughly 30 percent, leaving Opportunity with less energy for operations and communications but still enough, with comfortable margin, to continue with the plan to investigate the heat shield remains. The dust storms will be monitored carefully using the rover's own instruments and images from Mars Global Surveyor. The team will also be walking through low-energy contingencies should they become necessary.

    Sol-by-sol summaries:

    On sol 325, Opportunity drove 27 meters (about 89 feet) backward, to "West Point." It imaged the heat shield debris field from that vantage point. The engineers choose to occasionally drive the rover backward for convenience and to keep the wheel-motor lubrication more evenly distributed.

    Sol 326 was the second sol of a two-sol plan. This sol was spent imaging the heat shield debris field.

    On sols 327 to 329, the Moessbauer spectrometer was placed on the compositional calibration target for a series of observations over the Earth weekend. This is done periodically to calibrate the Moessbauer instrument. The rover continued routine atmospheric observations and remote sensing of the heat shield debris field.

    On sol 330, Opportunity used its panoramic camera to take images of the heat shield debris field, then drove 15 meters (about 49 feet) to a location called "South Point" for another look at the debris field.

    On sol 331, Opportunity drove roughly 10 meters (33 feet) to approach the flank portion of the heat shield remains. The heat shield broke into two main piece when it hit the ground. The flank is the smaller of those portions.

    On sol 332, which ended on Dec. 30, the rover made its final approach to the flank portion of the heat shield wreckage in preparation for close-up inspection of the heat shield material over the New Year's holiday weekend. The drive brought Opportunity's odometer total to 2,051 meters (1.27 miles).

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    Out Of Endurance
    Pasadena CA (JPL) Dec 15, 2004
    Opportunity has finished its work inside "Endurance Crater" and climbed out. Before leaving, the rover examined a transition point between dark and light rock layers about 20 meters (about 66 feet) from the rim of the crater.

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