spectroheliograph中文什么意思

n.
【天文学】太阳单色光照相仪，日射光谱计。

• double spectroheliograph:    双筒太阳单色光照相仪

百科释义

The spectroheliograph is an instrument used in astronomy which captures a photographic image of the Sun at a single wavelength of light, a monochromatic image. The wavelength is usually chosen to coincide with an spectral wavelength of one of the chemical elements present in the Sun.