Yay! After months of waiting NASA’s MRO has reached its science orbit and taken its first snap with its HiRISE camera. NASA has a press release with a link to the gallery page of the image which has a scale of about 1 foot per pixel. They also have an 8MB TIFF “sub-image” available for download from the MRO’s calibration gallery.
Below is the first image!
Update: the page with the full image from which the above sub-image was taken is also available, but be warned, the full size JPEG is 23444 x 23377 pixels and ways in at a hefty 111.8 MBytes!