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Opportunity Sol 535 (Spirit Sol 555)

26 Jul 2010, 10:25 UTC
Opportunity Sol 535 (Spirit Sol 555)
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I don't remember the last time this happened. We appear to have entirely lost the first part of the pass, leaving us nearly blind. We got the side-looking NAVCAMs and all of the PANCAMs, but we don't have any front HAZCAMs, the final rear HAZCAMs, or the center NAVCAMs -- not even thumbnails.So the question is, can we drive anyway? The last drive aimed for the entrance to a particularly broad and flat zone, so if we can prove that that's where we ended up, we're fine. In an ideal world, this would be mostly a problem of triangulation -- first, find several landmarks in the images we do have, and estimate azimuth and range to those. Then do the same for the same landmarks in the previous sol's images, and compare the two results. That will tell us for certain where we are with respect to where we started.There's only one small problem: the landmarks. In large measure, every part of Meridiani looks like every other part. How do you pick out the same point on the top of a ripple in two images taken 30m apart? We're able to find a couple of Scotty-like cobblestones in both the ...

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