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Steve Ryan - Stars around Polaris - Day 62 (by-sa)
 

 

 

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Description

I took a somewhat similar shot at the time of the Leonid meteor shower, but wanted to repeat it with the north star in the view. This was taken with a nearly full moon which lit up the trees and added background light to the sky, but a reasonable number of stars were still visible.

Stop now if you don't want all the details... - This was created from 149 separate 10-second exposures. All were shot at F2.8, 17mm focal length, and ISO 1600. - Combining these images in my photo software would have required over 1000 mouse operations, so I modified an old Java program I had lying around to do the job. - The software simply chose the brightest value from each of the 149 files for each pixel. - Each star path has a gap in it about 2/3 of the way through because there was a delay between the first 100 images an the rest. - The trees were lit by moonlight, and briefly by some light through a skylight in the house below. - The dotted lines represent passing aircraft, and the gaps in those lines are due to a delay of a few seconds between each exposure. - I actually took the images on December 1, but I don't feel too badly posting the result as my December 2 picture of the day because I did all the coding and processing on the 2nd. - I did <a href="https://www.flickr.com/photos/juniorvelo/312646148/">take</a> <a href="https://www.flickr.com/photos/juniorvelo/312644520/">other</a> <a href="https://www.flickr.com/photos/juniorvelo/312644722/">pictures</a> on the 2nd.

I'm really looking forward to repeating this on a clear moonless night using 30 second exposures.

Date , 00:16
Source Stars around Polaris - Day 62
Author Steve Ryan from Groveland, CA, USA

Licensing:edit

w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
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Under the following conditions:
  • attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).
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Checked copyright icon.svg This image was originally posted to Flickr by Velo Steve at https://flickr.com/photos/29145750@N00/312672130. It was reviewed on by the FlickreviewR robot and was confirmed to be licensed under the terms of the cc-by-sa-2.0.
Photo's description:
I took a somewhat similar shot at the time of the Leonid meteor shower, but wanted to repeat it with the north star in the view. This was taken with a nearly full moon which lit up the trees and added background light to the sky, but a reasonable number of stars were still visible. Stop now if you don't want all the details... - This was created from 149 separate 10-second exposures. All were shot at F2.8, 17mm focal length, and ISO 1600. - Combining these images in my photo software would have required over 1000 mouse operations, so I modified an old Java program I had lying around to do the job. - The software simply chose the brightest value from each of the 149 files for each pixel. - Each star path has a gap in it about 2/3 of the way through because there was a delay between the first 100 images an the rest. - The trees were lit by moonlight, and briefly by some light through a skylight in the house below. - The dotted lines represent passing aircraft, and the gaps in those lines are due to a delay of a few seconds between each exposure. - I actually took the images on December 1, but I don't feel too badly posting the result as my December 2 picture of the day because I did all the coding and processing on the 2nd. - I did <a href="http://www.flickr.com/photos/juniorvelo/312646148/">take</a> <a href="http://www.flickr.com/photos/juniorvelo/312644520/">other</a> <a href="http://www.flickr.com/photos/juniorvelo/312644722/">pictures</a> on the 2nd. I'm really looking forward to repeating this on a clear moonless night using 30 second exposures.


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File name steve_ryan_-_stars_around_polaris_-_day_62__by-sa_.jpg
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Mime type image/jpeg


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