Questions: From the list below, choose the exposure time that is closest to the exposure time used to make this star trail image: 1 hour 2 hours 12 hours 30 minutes 6 hours

From the list below, choose the exposure time that is closest to the exposure time used to make this star trail image: 1 hour 2 hours 12 hours 30 minutes 6 hours
Transcript text: From the list below, choose the exposure time that is closest to the exposure time used to make this star trail image: 1 hour 2 hours 12 hours 30 minutes 6 hours
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Solution

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The answer is the first one: 1 hour.

Explanation: Star trail images are created by capturing the movement of stars across the sky due to the Earth's rotation. The length of the trails in the image depends on the exposure time.

  • 1 hour: This is a common exposure time for star trail images, resulting in noticeable but not overly long trails.
  • 2 hours: This would produce longer trails, but it is less common due to the increased risk of noise and other issues.
  • 12 hours: This is highly impractical for a single exposure due to battery life, sensor heating, and other technical limitations.
  • 30 minutes: This would produce shorter trails, which might not be as visually striking as those in a typical star trail image.
  • 6 hours: Similar to 12 hours, this is impractical for a single exposure for the same reasons.

Therefore, the exposure time closest to the one typically used for star trail images is 1 hour.

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