# @nasaartemis on Instagram

- **Type:** Image
- **Original URL:** https://www.instagram.com/p/6kI2qrmh04
- **Gondola URL:** https://gondola.cc/posts/15347644-nasaartemis-instagram
- **Thumbnail:** https://img.gondola.cc/tr:w-,h-,fo-auto/thumbnails/f1f2856dc9.jpg
- **Posted:** 2015-08-19T12:17:54.000+00:00
- **Account Owner:** NASA Artemis (@nasaartemis) — https://gondola.cc/nasaartemis

## Caption

Have you ever seen the wondrous star trail images taken by Expedition 31 Flight Engineer Don Pettit? Here's what he had to say about the techniques he used to achieve these photos: “My star trail images are made by taking a time exposure of about 10 to 15 minutes. However, with modern digital cameras, 30 seconds is about the longest exposure possible, due to electronic detector noise effectively snowing out the image. To achieve the longer exposures I do what many amateur astronomers do. I take multiple 30-second exposures, then ‘stack’ them using imaging software, thus producing the longer exposure.” Credit: NASA/Don Pettit

#NASA #Inspired #exploration #space #colorfulights #StarTrails #photography #technique #SpaceStation #ISS #Expedition #DonPettit #TimeLapse

## Stats

- **Views:** 0
- **Likes:** 5,308
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- **Comments:** 74

## Tags

inspired, spacestation, nasa, timelapse, iss, space, photography, exploration, colorfulights, startrails, donpettit, expedition, technique

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