• Opportunity is several weeks past winter solstice
• solar panels are the cleanest since 2006
• we are driving south along the rim
• near the crest of Murray Ridge
Due to a nearly continual wind or breeze at the winter location on Murray Ridge here at Endeavour crater, the solar panels are cleaner than they have been in years. The dust factor is in the high .8s (dust free = 1.0, half dust covered = 0.5). After most recent winters the dust factor has been around 0.45 - 0.50.