""The world is full of obvious things which nobody by any chance ever observes…""
— Arthur Conan Doyle
“The Hound of the Baskervilles”
""Mathematics...
@moonmtn I don't do single exposure star trails, what you see is a series of 30 sec, ISO640, f5.4 photos stacked. Because of the cloud cover, this one may have been only 50 or 60 photos (I haven't reset my machine yet, so I don't remember the count.)