hydrogen alpha line

hydrogen alpha line

(Hα line) See hydrogen spectrum.
References in periodicals archive ?
This produces a 20-percent higher transmittance of Hydrogen Alpha line, or H wavelength, allowing astronomers to capture crisp, clear images of reddish, diffuse nebulae.
The modification increases the transmission of light at the specific wavelength of 656nm, known as the Hydrogen Alpha line, or H(alpha) wavelength, by a factor of 2.