"The Optical Microscope can receive soil materi...

"The Optical Microscope can receive soil material from the digging site via the scoop. In a first place this material is dropped on various targets (magnetic, non-magnetic, textured or sticky targets) of a particular sample holder, the so-called SWTS (Sample Wheel Translation Stage). Then the SWTS is translated and rotated such that the delivered material can be imaged by the Optical Microscope. These images provide information on color, grain size (down to

This makes it clear. I bet these are calibration pictures that we are looking at, since the scoop hasnt been "used" yet.