Mynd:Steve Ryan - Stars around Polaris - Day 62 (by-sa).jpg
Upphafleg skrá (3.456 × 2.304 mynddílar, skráarstærð: 3,01 MB, MIME-gerð: image/jpeg)
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Lýsing
| Lýsing |
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. |
| Dagsetning | |
| Uppruni | Stars around Polaris - Day 62 |
| Höfundarréttarhafi | Steve Ryan from Groveland, CA, USA |
Leyfisupplýsingar:
- Þér er frjálst:
- að deila – að afrita, deila og yfirfæra verkið
- að blanda – að breyta verkinu
- Undir eftirfarandi skilmálum:
- tilvísun höfundarréttar – Þú verður að tilgreina viðurkenningu á höfundarréttindum, gefa upp tengil á notkunarleyfið og gefa til kynna ef breytingar hafa verið gerðar. Þú getur gert þetta á einhvern ásættanlegan máta, en ekki á nokkurn þann hátt sem bendi til þess að leyfisveitandinn styðji þig eða notkun þína á verkinu.
- Deila eins – Ef þú breytir, yfirfærir eða byggir á þessu efni, þá mátt þú eingöngu dreifa því verki með sama eða svipuðu leyfi og upprunalega verkið er með.
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This image was originally posted to Flickr by Velo Steve at https://www.flickr.com/photos/29145750@N00/312672130. It was reviewed on 29. apríl 2007 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-sa-2.0. |
Breytingaskrá skjals
Smelltu á dagsetningu eða tímasetningu til að sjá hvernig hún leit þá út.
| Dagsetning/Tími | Smámynd | Víddir | Notandi | Athugasemd | |
|---|---|---|---|---|---|
| núverandi | 29. apríl 2007 kl. 08:05 | | 3.456 × 2.304 (3,01 MB) | 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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