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Star trails around north celestial pole

auteur: J.Lodriguss/Novapix

référence: a-pas01-00007

Image Size 300 DPI: 24 * 16 cm

This photo is about a 5 hour exposure with an 18mm f/3.5 lens on Fujichrome 100 RDP color slide film. It is pointed north. Because the earth rotates on it's own axis, during the exposure the stars seem to revolve around a point in the sky very near to Polaris. An observer at his telescope is illuminated at the bottom of the frame with a red flash.

Keywords for this photo:

1990 - AMATEUR ASTRONOMER - ASTRONOMY - CIRCUMPOLAR - LANDSCAPE - MAN - NIGHT - NORTH CELESTIAL POLE - NORTHERN HEMISPHERE - OBSERVING NIGHT - POLE STAR - ROTATION - SILHOUETTE - STAR - STAR TRAILS - STARRY SKY - TELESCOPE - TREE -