Inspiration from "time silces" by Richard Silver / petapixel.com/2012/09/25/beautiful-time-slice-photos-of-nyc-that-show-day-turning-into-night/.
Exposures taken every 6 minutes on an automatic sequence with a Nikon D7000 + Tokina 11-16mm @ f/2.8.
Each frame of the animation is a composite of 30 exposures, thus spanning 3 hours across the image. The exposure was switched from auto/aperture priority at sunset/sunrise to manual 30" for the night sky. The dark sky and Milky Way are visible at the beginning of the night. The last-quarter moon rises about half way through the night, illuminating the telescope platform, and is seen setting in the last few exposures after sunrise.
The individual frames were generated from the raw exposures using a simple Python Numpy/PIL script, available here: sc.eso.org/~gbrammer/stripe_combine.py .
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