astrobaja
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Star trails
Heres a shot my Wife and I did the other night. Canon 10D (ancient!) with a basic 28-55mm lens, F5.6, 100 iso 1/2 hour shot.
Focus is tricky because infinity is not the setting you use.
Turned out kinda cool! Polaris (north star is bright one just about in the middle)
http://imageshack.us/a/img189/3299/circlesh.jpg
Heres a great guide on how to try this technique yourself!!
http://www.liquidinplastic.com/2008/06/startrails/
Lots of great dark skies here in Baja so light pollution is not a big issue
\"There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear
and be replaced by something even more bizarre and inexplicable.There is another theory which states that this has already happened\"
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our website: http://bajadarkskies.com |
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N2Baja
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Wow, thats awesome
Forget about the danger and think of the fun.
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BigOly
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Good stuff! Thanks for the info/links. Oly
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astrobaja
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thanks! The key is to shoot an exposure of equal time in the same ambient temp with the lens cap on. This gives you a dark frame and it gets
subtracted from the original to take all the digital noise out
\"There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear
and be replaced by something even more bizarre and inexplicable.There is another theory which states that this has already happened\"
Douglas Adams
our website: http://bajadarkskies.com |
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Ken Cooke
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| Quote: | Originally posted by astrobaja
thanks! The key is to shoot an exposure of equal time in the same ambient temp with the lens cap on. This gives you a dark frame and it gets
subtracted from the original to take all the digital noise out |
I never knew any of this. Thank you for taking the time to explain it to us!
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David K
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So should we worry when Polaris no longer is a dot, but becomes a blur in these photos pointed at true north?
That is when climate will really change!
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CortezBlue
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Good article.
I haven't done a star trail for several years and there is an old abandon house near my home that I want to shoot the star trail from inside looking
out and dome some internal illumination using a flash or flashlight.
I shoot Nikon and use an intervalometer to take the photos automatically. Maybe during memorial day weekend.
[Edited on 5-21-2012 by CortezBlue]
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astrobaja
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Cortezblue: some amateur astronomers told me about this free software that stacks and subtracts darks for you, much easier!
http://www.startrails.de/html/software.html
\"There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear
and be replaced by something even more bizarre and inexplicable.There is another theory which states that this has already happened\"
Douglas Adams
our website: http://bajadarkskies.com |
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