Spectrograph a flat field to a spectral domain extended, using a holographic network concave

摘要

P spectrograph flat field for a wide spectral range, using a holographic grating concave. / p & & p & the various portions of the spectrum is formed successively on the same detector plane when it rotates the diffraction grating about an axis passing through the top and perpendicular to the plane containing the diameter of the average point of the inlet slit. / p & & p & the invention applies to spectrographies for analysis of the spectral domains extended. / p