Image:Steve Ryan - Stars around Polaris - Day 62 (by-sa).jpg
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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="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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| Source | |
| Date |
December 03, 2006 at 00:16 |
| Author |
Steve Ryan from Groveland, CA, USA |
| Permission (Reusing this image) |
see below |
[edit] Licensing
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This file is licensed under Creative Commons Attribution ShareAlike 2.0 License (cc-by-sa-2.0). In short: you are free to share and make derivative works of the file under the conditions that you appropriately attribute it, and that you distribute it under this or a similar cc-by-sa license. |
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This image was originally posted to Flickr by Velo Steve at http://flickr.com/photos/29145750@N00/312672130. It was reviewed on 10:03, 29 April 2007 (UTC) by FlickreviewR, and confirmed to be licensed under the terms of the cc-by-sa-2.0. |
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| Date et heure | Dimensions | Utilisateur | Commentaire | |
|---|---|---|---|---|
| actuel | 29 avril 2007 à 10:05 | 3 456×2 304 (3,01 Mio) | ComputerHotline | ({{Information |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 s) |
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