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Opportunity Status for sol 47
Aiming for Shark's Tooth
posted Mar. 12, 6:30 pm PST

On sol 47, which ended at 2:10 p.m. PST on Friday March 12, Opportunity awoke to "No Particular Place to Go" by Chuck Berry in recognition of the stay at "Berry Bowl." Engineers also played "That's Amore" by Dean Martin in honor of the Phobos moon's transit across the sky.

Opportunity finished remnants of activities from the past sol's research at "Berry Bowl." The sol started with the hazard avoidance camera taking a picture of the "Berry Bowl" area as a context picture. The miniature thermal emission spectrometer then performed some "sky stares" of the atmosphere. At 11:30 Local Solar Time, the robotic arm started moving. It picked up the alpha particle X-ray spectrometer and moved to a new location nearby, then switched to the Moessbauer spectrometer. Both spectrometers are searching for clues about the chemical composition of the mysterious "blueberries."

Later, Opportunity took panoramic camera images of the suite magnet on the rover itself, which is collecting atmospheric dust samples to understand why the martian dust is so magnetic. The panoramic camera also took images of a target dubbed "Fool's Silver," which contains an interesting angular feature in the outcrop.

After all the morning's hard work, Opportunity took a short siesta to rest and recharge. Opportunity reawakened a few hours later to take more images of the atmosphere with the miniature thermal emission spectrometer and panoramic camera. Those were taken in the same locations as the morning measurements to compare the atmospheric data throughout the sol.

At 15:40 Local Solar Time, Opportunity took about a dozen images of the Sun to catch the eclipse by the martian moon, Phobos. Opportunity once again shut down for a nap and woke up at 4:53 Local Solar Time, sol 48, for a tool change and a communications session with the Odyssey orbiter. While the rover was awake for the Odyssey pass, the rover heated up the robotic arm, which had chilled to almost -80 degrees Celsius (-112 degrees Fahrenheit). The motors cannot move at that frigid temperature, so the rover arm heated for 32 minutes to surpass the operational temperature of 40 degrees Celsius (104 degrees Fahrenheit). As the rover arm quickly cooled, the heat lasted long enough (5 minutes) for the arm to twist its wrist and change instruments from the Moessbauer spectrometer back to the alpha particle X-ray spectrometer.

The rest of the plan for sol 48, which will end at 2:49 p.m. PST on Saturday, March 13, is to perform quite a few complicated maneuvers. Opportunity plans to brush an area with the rock abrasion tool, analyze the brushed area with the spectrometers, then drive 10 meters (33 feet) along the slippery slopes of the outcrop to "Shark's Tooth" in "Shoemaker's Patio."