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The Big Dipper Rising
Kodak Pro 400 PPF - 6 x 7 cm Pentax medium format camera, 55mm lens - 2 negatives
- This photo of the Big Dippers rising above the pines shows, enlarged in their true color, the main "naked eye" stars that make up the shape of the constellations. This is a natural photographic technique with the effect created during a single exposure of the film. This constellation is far into the Northern sky and the outer two stars of the "cup" point to Polaris, the North "Pole Star".
Our photographic technique was used that we call a "motion stop sequence" to get the long exposure of the constellation and a sharp exposure of the landscape in the same photograph. The camera must accurately track the movement of the stars across the sky over the hour long exposure to keep them from smearing on the film. Then a new exposure is taken with the tracking drive turned off to capture the "Earth scene" and keep it from smearing on the film. Then the two are merged together so the final photograph shows both components clearly as they looked to the observer in "real time".
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