The "Moessbauer Spectrometer" - Sol 39

Caption NASA originale:"This close-up image of the MER Spirit�s Instrument Deployment Device - or �Arm� - shows the donut-shaped plate on the Moessbauer Spectrometer. This image makes it easy to recognize the imprint left by the instrument in the Martian soil at a location called �Peak� on Sol 43 (February 16, 2004). This image was taken by the Rover�s PanCam on Sol 39 ".