Sol 4259, January 17, 2016. Opportunity’s Rock Abrasion Tool, having safely done a light grind on the target dubbed Pvt. John Potts, drilled a few millimeters deeper into the target. At right is the scene, showing a collar of debris around the RAT hole. Below is a four-frame composite image from the Micro-Imager (click to enlarge).
Opportunity raw images, its latest mission status, a location map. and atmospheric opacity, known as tau.