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Enjoying the Night Sky
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Horizon and Zenith
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Stars and constellations
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Zodiac Constellations
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Astrophotography All you need: Single lens reflex camera on tripod Cable shutter release F-stop on smallest number Focus to infinity Fast film (at least 400 speed) or set digital camera to 400 Aim the camera, and hold shutter open for 10-30 seconds for constellations As long as you want for star-trails
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Star-trails
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Circumpolar star-trails
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Why the trails?
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Sagitarrius and Milky Way: 30 second exposure
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Wandering Stars: the planets The ancients knew of seven objects that wandered through the stars (the Sun, Moon, Mercury, Venus, Mars, Jupiter, and Saturn). They called these wanders the “planets” (from the Greek for wanderer). All of these objects are visible with the naked eye.
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Sky at a Glance skyandtelescope.com
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The Moon
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Earth and Moon Compared Distance? 30 Earths
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Phases of the Moon
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Eclipses of the Moon A lunar eclipse occurs when the Moon passes into the shadow of the Earth. The lunar eclipse is visible to everyone on the night side of the Earth. Aristotle (384-322 B.C.) used the apparent shape of the Earth’s shadow to show that the Earth is a sphere.
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Lunar Eclipse
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Lunar Eclipse Showing Earth’s Shadow
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Next total lunar eclipse: December 21, 2010 http://eclipse.gsfc.nasa.gov/ http://mreclipse.com
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Meteors
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Orionids,2009 Predicted Maximum: October 21 Moon: Waxing Crescent (no interference) WHEN TO WATCH: From about 1:00 am until twilight gets too bright, from October 20 - October 22. 20-25 meteors/hour Leonids, 2009 Predicted Maximum: November 17, ~21:00 UT (= Nov. 17, 4:00pm EST) Moon: New Moon (no interference) WHEN TO WATCH: North American observers should especially try to cover the morning of Tuesday, November 17. 100-500 Leonids per hour!
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Spacecraft (satellites) International Space Station http://www.heavens-above.com
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Armchair astronomy Podcasts Blogs! Websites/ News feeds: –Astronomy TodayAstronomy Today –IYAIYA Twitter
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National Radio Astronomy Observatory, Green Bank, WV www.gb.nrao.eduwww.gb.nrao.edu
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