Io - PJ57-23 - approximate true colors : 無料・フリー素材/写真
Io - PJ57-23 - approximate true colors / semeion.photo
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | JNCE_2023364_57C00022_V01Capture time: 2023-12-30 08:37 UTHeight above surface: 2839.6 km Jupiter's innermost moon Io as captured by the JunoCam instrument during Perijove 57.The image is processed in approximate true color as the human eye would see it. Using the spectral sensitivities of the RGB filters of the camera, the surface reflectance profile of Io (Karkoschka et. al 1995; Hapke et. al. 1989) and the CIE 1931 color matching functions, I computed a best effort color calibration matrix. A difficulty with JunoCam is that it's color filters/lenses have been altered from radiation, making the raw white-balance very inconsistent over time (bsky.app/profile/bjornjonsson.bsky.social/post/3lb4457uxm22t). I tried to account for this during processing, but the correction is only approximate. This image was processed from the raw framelets. They were calibrated with custom python script and assembled in PTGui. Credit: NASA / JPL-Caltech / SwRI / MSSS / Simeon Schmauß[This image was originally posted on January 1st 2024, but was replaced by an updated version with better calibration and processing on January 1st 2025. The original colors can be seen here: flic.kr/p/2ppRXkx] |
| 撮影日 | 2023-12-30 00:00:00 |
| 撮影者 | semeion.photo , Munich, Germany |
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| カメラ | JunoCam , NASA / SwRI / MSSS |