File:A_Sagittarius_Trio.jpg
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![File:A Sagittarius Trio.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/f/f2/A_Sagittarius_Trio.jpg/800px-A_Sagittarius_Trio.jpg)
本预览的尺寸:800 × 578像素。 其他分辨率:320 × 231像素 | 640 × 463像素 | 1,024 × 740像素 | 1,280 × 925像素 | 2,560 × 1,851像素 | 3,245 × 2,346像素。
原始文件 (3,245 × 2,346像素,文件大小:7.13 MB,MIME类型:image/jpeg)
摘要
描述A Sagittarius Trio.jpg |
English: In this image of the Lagoon and Trifid Nebulae, the object is represented in a different light as opposed to the earlier true colour image. Instead of the usual RGB method of obtaining true colours of deep sky objects, the image featured here is an emission-line filtered image which represents the nebula's chemical composition. In this case, the nebula is photographed using a modified version of what is known as the Hubble palette, in which three filters to isolate Sulfur, Hydrogen and Oxygen emissions are used. The data from these three filters are then mapped to Red, Green and Blue respectively to create a false colour composite as depicted above. Due to the overwhelming presence of hydrogen in the Universe, most of the objects photographed using this palette will therefore appear predominantly green, a contrast from the usual strongly red colours that ionized hydrogen emits when photographed in natural colour. Photographed with personal equipment |
日期 | |
来源 | 自己的作品 |
作者 | Ivan Bok |
许可协议
我,本作品著作权人,特此采用以下许可协议发表本作品:
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This image was uploaded as part of Wiki Science Competition 2017. |
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描绘内容
知识共享署名4.0国际 简体中文(已转写)
28 7 2017
媒体类型 简体中文(已转写)
image/jpeg
数据大小 简体中文(已转写)
7,475,809 字节
2,346 像素
3,245 像素
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日期/时间 | 缩略图 | 大小 | 用户 | 备注 | |
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当前 | 2017年11月11日 (六) 07:05 | ![]() | 3,245 × 2,346(7.13 MB) | Ivanbok | User created page with UploadWizard |
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