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The old Liberty Schoolhouse at Majorville, Alberta, with some fun with lighting the interior. This schoolhouse was built in 1909, as the classic one room school on the prairies. This is a stack of 12 exposures for the star trails with Lighten Blend mode, plus 5 exposures for the ground with Mean Combine stack mode to smooth noise in the dark ground. Each was 20 seconds at f/2.8 with the 16-35mm lens and Canon 60Da at ISO 3200.