Leginon

Transfer the original description here

For the K3, the target area shown is always drawn as a square, even though the camera is rectangular. This makes hole targeting difficult, since we want to target non-overlapping hole targets. For the orientation on the K3 camera on the Arctica, the x-dimension is correct but the y dimension is too large. I tried looking at the code last night but it was hard to figure out where these squares are drawn

Tested. This uses stage position calibration. If it appears wrong, check the calibrations.