A couple of star trail questions???

Started Oct 6, 2011 | Discussions thread
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KENTGA
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A couple of star trail questions???
Oct 6, 2011

Going to the North GA mountains this weekend and I'm going to try and shoot some star trails. I'm going to try the series of 30 second exposures (probably 50) and I'm going to aim for Polaris. I have a couple of questions.

1. Damage to sensor or not. I have a 30D, 40D & 7D. I'd like to use the 30D if the results will be close to the 40D or 7D. What do you think?

2. Which lens to use- I have 10-22, 17-55, 50 1.4, 17-40 and 85 1.8 among others. What mm setting?

3. ISO, f stop and apeture? The moon will be fairly bright but behind me.

4. No noise reduction?

5. Mirror lockup?

6. I have the Canon TC-80N3 Remote Control Timer. How much time should there be between exposures?

Thanks for your input,

Kent

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