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Pasadena CA (JPL) Jun 15, 2010 The pancam mast assembly (PMA) azimuth error from Sol 2257 (May 30, 2010), is still being resolved on Opportunity, although with a likely explanation in hand. Diagnostics were run on Sols 2259, 2261, 2262 and 2265 (June 1, 3, 4 and 8). In every case, the diagnostics indicated a healthy PMA azimuth actuator. Further investigation now suggests that the miniature thermal emission spectrometer (Mini-TES) is the origin of the PMA symptom and that the PMA was just waiting on a signal from the Mini-TES that never arrived. Anomalous symptoms were observed from the Mini-TES earlier on Sol 2250 (May 23, 2010). Investigations are underway on the instrument. Meanwhile, final checkouts are being performed to return the PMA to normal use and to resume driving. As of Sol 2266 (June 9, 2010), solar array energy production was 287 watt-hours, atmospheric opacity (Tau) was 0.465 (Sol 2256) and the solar array dust factor improved to 0.589. Total odometry is 20,862.01 meters (20.86 kilometers, or 12.96 miles).
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Opportunity For Power Increase Comes With Passing Of Winter SolsticePasadena CA (JPL) Jun 09, 2010 With the passing of the winter solstice and improving power, Opportunity continues to drive towards Endeavour crater. On Sol 2254 (May 27, 2010), the rover drove about 26 meters (85 feet) to the south/south east. Opportunity drove again on Sol 2256 (May 29, 2010), for about 25 meters (82 feet). But on Sol 2257 (May 30, 2010), a fault occurred with the pancam mast assembly (PMA) that suppor ... read more |
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