The Vicinity of Lambda Cephei : 無料・フリー素材/写真
The Vicinity of Lambda Cephei / geckzilla
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | Lambda Cephei—demure and largely ignored in visible light—stands out with its bright red shock wave to WISE's infrared eyes. Kaler, as usual, has a nice way of describing the star if you would like to know more about it. Click!For the processing on this one, I separated the four WISE channels into two distinct groups, treating each group as if it was a two-channel, pseudogreen image. The dust group (W3 & W4) is given preference for visibility while the star group (W1 &W2) is only faintly applied on top of the dust group as an additive layer.I also learned about some new artifacts in WISE imagery called latents which are leftover spots on the detector where bright sources were previously imaged, so I got rid of those along with the usual annuluses, otherwise known as filter ghosts.Dust Group:Red: W4 (22 μm)Green: pseudogreenBlue: W3 (12 μm)Star Group:Red: W2 (4.6 μm)Green: pseudogreenBlue: W1 (3.4 μm)North is up. |
| 撮影日 | 2016-06-06 01:50:34 |
| 撮影者 | geckzilla |
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