Big Dipper time lapse
1,461 views · Published 5 January 2012 · 0:17 · Indexed 11 October 2026
Channel: Paul Nathan · 2012 · Science & Technology
3hrs 20mins at 720x realtime. Ursa Major constellation 'turning' in the sky. The North Celestial Pole, the centre of rotation, is off to the left of the frame. All frames were 29s ISO 800 with 1s delay between frames (i.e. 30s per video frame). The usual horrible skyglow from light pollution, haze and also the Moon were removed in Photoshop. The intermittent darkness at the start was caused by some cloud passing overhead.
