How can I know the direction from which the sun light comes in this photo?
http://lc84.altervista.org/marte/imm...ake-2-edit.jpg
The
PDS label only specifies vertical angle: what about the horizontal one?!? Does the light come from left, right, down, downleft...?
And how can I know the spacecraft longitude with respect to the crater? Was it to the left or to the right of it while taking the picture?
All of these data are needed to properly estimate hole's data (dept, slope,...)
Any help?