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Photo du jour: Star Trails

Don Pettit

My star trail images are made by taking a time exposure of about 10 to 15 minutes. However, with modern digital cameras, 30 seconds is about the longest exposure possible, due to electronic detector noise effectively snowing out the image. To achieve the longer exposures I do what many amateur astronomers do. I take multiple 30-second exposures, then ‘stack’ them using imaging software, thus producing the longer exposure.—Don Pettit

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The 2nd Annual Feature Shoot Emerging Photography Awards is an international photography competition for up-and-coming image makers who are ready to kickstart their careers. Five talented photographers will be provided with the resources they need to get their career off to a strong start. Photographers of all disciplines are welcome to submit up to 5 images in any genre. We can’t wait to see your best work! Enter here.

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