observation

Observation

Radio wave and visual light pass through the Earth's atmosphere without reflection or absorption. Such transparent wavelength regions that we can observe the universe through them are called atmospheric windows. In astronomy, since its origin, we have observed the universe mainly through the optical wavelength. In these several decades, however, the observable wavelength extends radio and X-rays, and now, we see the universe in all wavelengths.

Radio wave and visual light pass through the Earth's atmosphere without reflection or absorption. Such transparent wavelength regions that we can observe the universe through them are called atmospheric windows.
In astronomy, since its origin, we have observed the universe mainly through the optical wavelength. In these several decades, however, the observable wavelength extends radio and X-rays, and now, we see the universe in all wavelengths.

Observation Processes	The astronomical observation generally has following processes: 　　　1．Detection 　　　2．Reduction 　　　3．Expression 　　　4．Analysis and Modeling
Observation Types	The astronomical observation is roughly divided into the following types: 　　　1．Imaging 　　　2．Photometry 　　　3．Spectroscopy 　　　4．Polarimetry

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