Challenge has finished
Let's see your favorite shot of the stars. For the purpose of this challenge you can submit shots of stars and longer star trails- however, the star trails/ stars must be clearly visible. Please don't submit an image where you have moonlight or daylight/ twilight washing out the stars. We don't want to see just a little smattering of stars, but a whole lot of great stars against a dark night sky. Please ensure that there are no animals or people in the photograph. All complaints related to entries in this challenge, must be made during the submission phase. Once the submission phase ends and voting starts, complaints will not be entertained. Have fun!
Friday, 4th September, 2009 (GMT)
Friday, 11th September, 2009 – Thursday, 17th September, 2009 (GMT)
Friday, 18th September, 2009 – Thursday, 24th September, 2009 (GMT)
Capture date rules:
Maximum number of entries per user:
Maximum number of entries in challenge:
This picture is a stack of 140 exposures, each 90 seconds and spanning nearly 4 hours. The 140 individual photos were then stacked on a pixel-by-pixel basis, keeping the brightest of all of the pixels. This scheme is particularly good at supressing urban skylight. The brighter looping lines are from airplanes arriving & departing BWI airport, about 30 km away. The fainter straight lines are from high altitude aircraft flying on the east coast flyway.
|Submitted:||Friday, 11th September, 2009 16:32 (GMT)|
|Taken:||Monday, 9th September, 2002|
|Focal length:||20 mm|
|Shutter speed:||12180 sec|
|Notes:||Camera timing done with Canon TC80 timer, producing 140 individual 90 sec pictures. Camera mounted on a stiff tripod. Duration limited by capacity of 512MB CF card. The break about 2/3 of the way thru occurred when battery ran out of juice. Image stacking used Max Lyons Stacker (http://www.tawbaware.com/imgstack.htm). A similar photo that caotured a rare mid-latitude Aurora Borealis can be seen at http://www.pbase.com/tomcat/aurora.|
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