I'd like to know the definition of orientation in the result.
Both of following two results are about Polaris. Second one is taken after rotating the camera about 90 degrees.
The orientation of first one is "Up is 259 degrees E of N", and second one is "Up is 68.3 degrees E of N".
I'd like to know which angle each value means.
The north celestial pole is at almost same direction from the center of the image in both of images. So I think they should be almost same values, but completely different.
Is there any document that explain about it?