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.
But for the very latest you’ve got to check out the HiRISE team blog where they already have the fact that the second image is down, of layered deposits at the Martian North Pole.
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!