FWIW I’ve used Hugin to create night sky panoramas, and I’ve always had to
manually define the control points. One star looks pretty much like another,
and cpfind can’t easily tell them apart. Even after manually setting points
and running one iteration of alignment it still has problems...
S
Although it can be challenging, the absolute best target for lens calibration
is the night sky - I can guarantee that you won't have any parallax problems
with the stars! As with a chessboard, the control point finder will fail
miserably so you have to set them manually; but once you've got the
