Star Trails #11
I tried a different PS stacking action and, oddly enough, the star trails are suddenly lining up correctly. I'm using this Startrails action. Tip: Duplicate your first image, move it to another folder (desktop), then open it as your 'blank' document. This ensures that you maintain your meta data.
My guess is that those more or less horizontal lines are jet trails.
30 images * 4 minutes (240 seconds) = 120 minutes
f/5.6 @ ISO200