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Shooting timelapse stars


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#1 Eugene Lehnert

Eugene Lehnert
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Posted 08 August 2005 - 03:52 PM

I want to try shooting some timelapse stars at night and I was wondering what kind of film to use. I have a wide angle lens and a prime that open to a 1.6 and 1.9 respectively.

My plan was to shoot a stop above the widest opening to get the sharpest image. But I was thinking of using a slower film like 50D to get less grain in the image. I know there will be little to no light but I will be keeping the shutter open for seconds at a time so I thought this approach might work.

Does anyone have any exerience shooting shots like this? I will be in the country with little to no light pollution in upstate NY.
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#2 Jason Debus

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Posted 08 August 2005 - 11:49 PM

The 'standard' speed for astrophotography is 400 ASA. It's the best balance of grain vs speed.

If the shutter is open for too long the stars will begin to streak, which is somewhere in the range of 20-30 seconds depending on where your pointing in the sky. Pointing tword the north is optimum for long exposures. East & west will streak a little more, and south will produce streaks the quickest.
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