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Mastering Canon EOS Flash Photography, 2nd Edition by NK Guy

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Appendices

Star Trails over Mobius Arch. This rock formation is sometimes referred to as Galen’s Arch in honor of late mountaineer and nature photographer Galen Rowell. Alabama Hills, Owens Valley, California, USA. The picture was taken over a one-hour period, facing north so that the Earth’s rotation would be recorded as trails of stars appearing to turn around Polaris. Exposure was allowed to continue until shortly before moonrise so that the gradual lightening of the sky would reveal the distant rocks and hills as a silhouette. While the shot could have been done as a single exposure, this particular image consists of about 80 individual 45-second ...

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