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16

S A T U R D A Y

The moon, stars, and planets are perfect subjects for the amateur shutterbug: They don’t blink, grimace, or hide their faces when you aim a camera at them. In “Sky Shooting!,” astronomer Geoff Chester explains how you can photograph star trails, planetary conjunctions, and the Milky Way using only a 35mm camera, a tripod, and an equatorial platform (an easy-to-build gizmo that rotates your camera in unison with the sky). At 10 a.m. at the National Air & Space Museum’s Einstein Planetarium, 6th & Independence Ave. SW. FREE. (202) 357-2700. (Greg Kitsock)