Round-Horizon Version of Curiosity's Low-Angle Selfie at Buckskin
self-portrait of NASA's Curiosity Mars rover at a drilling site called "Buckskin" on lower Mount Sharp is presented as a stereographic projection, which shows the horizon as a circle.
Curiosity drilled the hole at Buckskin during Sol 1060 (July 30, 2015). Two patches of pale, powdered rock material pulled from inside Buckskin are visible in this scene, in front of the rover. The patch closer to the rover is where the sample-handling mechanism on Curiosity's robotic arm dumped collected material that did not pass through a sieve in the mechanism. Sieved sample material was delivered to laboratory instruments inside the rover. The patch farther in front of the rover, roughly triangular in shape, shows where fresh tailings spread downhill from the drilling process. The drilled hole, 0.63 inch (1.6 centimeters) in diameter, is at the upper point of the tailings.
Cute selfie, too.