Books by J. M. Beckers
A high resolution spectral atl
A high resolution spectral atlas of the solar irradiance from 380 to 700 nanometers
A fully tunable Lyot-Öhman fil
A fully tunable Lyot-Öhman filter
Motions in the solar atmosphere
New views of sunspots
New views of sunspots
A table of Zeeman multiplets
A table of Zeeman multiplets
A study of the fine structures
A study of the fine structures in the solar chromosphere