To expand on what Jasem said, I suspect that our mapping of coordinates to pixels (not in the center of the image) can be off for certain types of setups.
Specifically images that astronomy.net considers parity=positive, which means they are mirrored relative to the other type of images.
For example, it looks like images from prime-focus telescopes (e.g. RASA) are mirrored in this way, whereas the more common telescope/camera pairs
do not have this issue. This is still a suspicion, and not confirmed. I'm trying to debug with one tester.
Re logging, how about something like this (or more logging):
Bottom line, I suspect that log files that contain output with this line:are fine, but ones where the parity is instead detected as "pos" may be problematic right now.