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首页> 外文会议>Tenth Color Imaging Conference: Color Science and Engineering Systems, Technologies, Applications Nov 12-15, 2002 Scottsdale, Arizona, USA >The Colors of the Deep Sky
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The Colors of the Deep Sky

机译：深空的色彩

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摘要

The term deep sky object is popular among astronomers to describe those faint patches among the stars that can be found only with optical assistance. The equipment needed to take pictures of deep sky objects is within the reach of dedicated amateur astronomers. In such low light levels there strictly is no color, but there is a natural desire to make these images look as they might appear if our vision were sensitive enough to perceive color. This is a component of esthetic presentation, and the use of color for this subject is extremely useful in education. CCD imaging equipment, because of its linearity, allows us to record and measure the spectral energy in a specific band determined by a filter placed in front of the sensor. By making several such recordings through red, green, and blue filters, a full color composite can be created. Of particular interest to astrophotographers are emission nebulas, whose spectra frequently comprise the dominant lines of hydrogen and ionized oxygen. These are present in a scene along with the wideband blackbody emissions of stars. Stars that shine into clouds of interstellar dust show yet other characteristic color. What is the representation of the recorded channels to portray a colorimetrically correct picture of these deep sky objects? This is the topic that will be addressed in this paper.
机译：深空天体一词在天文学家中很流行，用来描述只有在光学辅助下才能在恒星中发现的那些微弱斑点。拍摄深空物体所需的设备在专业的业余天文学家的能力范围内。在如此低的光线水平下，绝对没有颜色，但是人们自然希望使这些图像看起来像我们的视觉足够敏感以感知颜色时可能出现的图像。这是审美表现的一个组成部分，对这个主题的色彩使用在教育中极为有用。 CCD成像设备由于其线性度，使我们能够记录和测量特定频带中的光谱能量，该特定频带由放置在传感器前面的滤波器确定。通过通过红色，绿色和蓝色滤镜进行多次这样的记录，可以创建全彩色复合图像。占星摄影师特别感兴趣的是发射星云，其光谱通常包含氢和离子化氧的主要谱线。这些与恒星的宽带黑体辐射一起出现在场景中。闪耀在星际尘埃云中的恒星还显示出其他特征性的颜色。对这些深空物体进行比色正确描绘的记录通道的代表是什么？这是本文将要解决的主题。

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