by APOD Robot » Wed Oct 10, 2012 4:06 am
Nauset Light Star Trails
Explanation: In myth, Atlas holds up the heavens, but in this scene they seem to pivot around a lighthouse beacon. Photographed with a camera fixed to a tripod, the well-planned
30 minute exposure records star trails in the northern sky, reflecting the daily
rotation of planet Earth. Hidden behind the top of the prominent Nauset Lighthouse on Cape Cod, Massachusetts, USA, the
North Celestial Pole is at the center of all the star trail arcs.
Making a complete circle, 360 degrees, in 24 hours, the star trail arcs cover 15 degrees each hour or 7.5 degrees in thirty minutes. Foreground lighting is courtesy of September 23rd's first quarter moonlight.
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[url=http://apod.nasa.gov/apod/ap121010.html][img]http://apod.nasa.gov/apod/calendar/S_121010.jpg[/img] [size=150]Nauset Light Star Trails[/size][/url]
[b] Explanation: [/b] [url=http://www.pantheon.org/articles/a/atlas.html]In myth, Atlas[/url] holds up the heavens, but in this scene they seem to pivot around a lighthouse beacon. Photographed with a camera fixed to a tripod, the well-planned [url=http://www.abmedia.com/astro/current/nausetlight-startrails.html]30 minute exposure[/url] records star trails in the northern sky, reflecting the daily [url=http://apod.nasa.gov/apod/ap070519.html]rotation of planet Earth[/url]. Hidden behind the top of the prominent Nauset Lighthouse on Cape Cod, Massachusetts, USA, the [url=http://apod.nasa.gov/apod/ap120712.html]North Celestial Pole[/url] is at the center of all the star trail arcs. [url=http://apod.nasa.gov/apod/ap120802.html]Making a complete circle[/url], 360 degrees, in 24 hours, the star trail arcs cover 15 degrees each hour or 7.5 degrees in thirty minutes. Foreground lighting is courtesy of September 23rd's first quarter moonlight.
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