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Star Long-time Exposure?

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jimmychung
Posts: 6857 - Karma: 25
I'm planning on trying that photo technique where you point your camera to the stars on a tripod and leave the shutter open for an hour or so, and you get an effect as the stars move across the sky. Has anyone done this? Any tips?
Nov 25 2006 8:20PM
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invisman
Posts: 736 - Karma: 60
Yeah I've done it before. Make sure you use a sturdy tripod, that there are absolutely no clouds in the sky, and that their is a new moon.  Also, get away from cities or town, as light pollution looks really ugly in long exposures.  Finally, keep the aperture open pretty wide and expose for 30 minutes max if your shooting with a dslr, because shit starts to get noisy/grainy.  If shooting film, go for as long as you want but remember to keep track of reciprocity failure (search google for all this).  Here's one I shot last summer.  It was around a 30 minute exposure:

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Nov 25 2006 10:57PM
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invisman
Posts: 736 - Karma: 60
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Nov 25 2006 10:57PM
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invisman
Posts: 736 - Karma: 60
http://flickr.com/photos/tombollierphotography/212527387/
Nov 25 2006 10:58PM
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jimmychung
Posts: 6857 - Karma: 25
awesome picture! thanks for the tips.
Nov 25 2006 11:49PM
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Elife
Posts: 2829 - Karma: 44
Here, this should work
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Nov 26 2006 3:40PM
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jimmychung
Posts: 6857 - Karma: 25
success!!
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and my favorite:
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Dec 19 2006 7:16PM
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hartig
Posts: 8192 - Karma: 10
i cant wait to get a dslr...
Dec 19 2006 7:22PM
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FigmentFilmski
Posts: 1639 - Karma: 266
i actually think those look dumb, just my opinion though
Dec 20 2006 12:18AM
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mammothpunks
Posts: 5724 - Karma: 372
i like this one. there are some more tips on photo.net under learning

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Dec 20 2006 2:36AM
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soulskier
Posts: 17806 - Karma: 3,841
that looks sweet
Dec 20 2006 3:46PM
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Geoff.
Posts: 2378 - Karma: 12
mammothpunx, first did you take that? and about how long of an exposure do you think you would need to get the streaks that long?
Dec 20 2006 3:57PM
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jimmychung
Posts: 6857 - Karma: 25
i'd say probably 3-4 hours.
Dec 20 2006 4:31PM
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mammothpunks
Posts: 5724 - Karma: 372
my name isnt dan heller so no. it was 3.5 hours at 16,000 feet tho
Dec 20 2006 5:29PM
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JoakimHayland
Posts: 1053 - Karma: 43
i wanna try that with the northern light.
Dec 22 2006 9:05AM
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PinkEYEs
Posts: 11 - Karma: 10
alot of people that use a DSLR don't do the hour long exposure just cause it heats up the camera too much and distorts your picture. Most people I know do 20 or 25 2 minute exposures back to back and then use photoshop to just paste layer on top of layer to get the desired look like the photo above.

but that is just what I have been hearing...
Dec 22 2006 11:48AM
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