A closer look at "Sputnik" crater by Opportunity?

[exoscientist]

The full resolution version of the new Victoria image has been released:<br /><br />HiRISE | Opportunity Rover Tracks at Victoria Crater (PSP_004289_1780).<br />http://hirise.lpl.arizona.edu/PSP_004289_1780<br /><br />The second rim is still not visible. I attached a cropped portion of the full image, zoomed in on Sputnik. I rotated it 90 degrees clockwise to make it clearer it's a depression in the ground.<br />I don't know why Sputnik looks so different in the two Hirise images. It's not the filter used since they were both taken with the red filter.<br /><br /><br /> Bob Clark <div class="Discussion_UserSignature"> </div>