Mars Exploration Rovers Update - May 3, 2004

http://www.jpl.nasa.gov/mer2004/daily/5-3-04.cfm
Spirit Status for sols 114-117 Spirit explores the 'Big Hole' trench posted May 3, 4:45 pm PDT
On Sol 114, which ended at 9:49 a.m. April 29 PDT, Spirit performed a lot of science activities in the trench called "Big Hole" using the microscopic imager, Moessbauer spectrometer and alpha particle X-ray spectrometer. Opportunity also studied the rover tracks and the crater rim.
Sol 116 started with a repeat of the microscopic imaging of a target in the trench due to minor communication glitches on sol 115. Spirit then stowed the arm, backed away from Big Hole trench, and took panoramic camera images of the trench before it continued on its trek toward the Columbia Hills. The drive on sol 116, which ended at 11:08 a.m. May 1 PDT, established a new drive record of 90.8 meters (298 feet) for Spirit!
On sol 117, which ended at 11:47 a.m. May 2, Spirit drove 37 meters (121 feet) to a small ridge, where the vehicle experienced a pitch up of 12.2 degrees. Engineers believe that the change in tilt caused the vehicle to recompute its "goodness map," which helps the rover autonomously drive over the martian terrain, and the rover declared that it was not safe to continue its drive. One good thing that came out of this is that the end-of-drive tilt positioned the solar arrays to maximize afternoon solar exposure, and the rover's battery state of charge is in good health.
Opportunity Status for sols 94-97 Opportunity Arrives at 'Endurance Crater' posted May 3, 4 pm PDT
After a 50-meter (164-foot) drive on sol 94, which ended at 10:10 p.m. April 29 PDT, and the final approach of 17 meters (56 feet) on sol 95, which ended at 10:49 p.m. April 30 PDT, Opportunity arrived on the western rim of "Endurance Crater" and began surveying the spectacular new view.
Opportunity sits about half a meter (1.6 feet) outside the edge of the crater with a positive pitch of 4.7 degrees, meaning the rover is slightly tilted with its head up. The western side of the crater rim slopes down in front of Opportunity with an angle of about 18 degrees for about 17 meters (56 feet).
Sols 96 and 97, which ended at 11:29 p.m. May 1 PDT, and 12:08 a.m. May 3 PDT respectively, focused on remote sensing of Endurance Crater and the interesting features in and around it.
All systems are healthy and Opportunity's batteries are near a full state of charge.
The plan for sols 98 and 99, which end at 12:48 a.m. May 4 PDT and 1:28 a.m. May 5 PDT respectively, is to take advantage of Opportunity's current vantage point and take high-resolution miniature thermal emission spectrometer readings of the far crater wall.
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