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Better Quality Night Sky Images Using Luminosity Masks

23 days ago   |   By Photo Cascadia

Digital cameras have revolutionized our ability to create images of the night sky. Using film, there are essentially two ways to expose a night sky image. One is to leave the camera shutter open for a LONG time on a fixed tripod. This technique creates star trails as the earth rotates beneath the sky. It's a great visual effect but doesn't capture the stars as individual points of light, the way we see them. The other method is to attach the camera to a rotating mount that tracks the motion of the stars...and then leave the shutter open for a LONG time. This produces very detailed night...
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