Spectroheliograph Diagram

The principle of the spectroheliograph: Slit (1) selects some particular segment of the solar (see insert); slit (2) isolates a particular wavelength in the spectrum of that segment and allows it to impress its image upon the photographic plate. As the sun's image is made to move across slit (1), the photographic plate moves in synchronism past slit (2). Thus a photographic image of the sun, in a particular wavelength of its radiation, is composed segment by segment., Credit Line: Sky and Telescope, courtesy AIP Emilio Segrè Visual Archives
Abstract/Description: The principle of the spectroheliograph: Slit (1) selects some particular segment of the solar (see insert); slit (2) isolates a particular wavelength in the spectrum of that segment and allows it to impress its image upon the photographic plate. As the sun's image is made to move across slit (1), the photographic plate moves in synchronism past slit (2). Thus a photographic image of the sun, in a particular wavelength of its radiation, is composed segment by segment.
Subject(s): Optical spectroscopy
Astronomy
Diagrams
Graphic arts
Hale, George Ellery, 1868-1938
Credit Line: Sky and Telescope, courtesy AIP Emilio Segrè Visual Archives
Catalog ID: Hale George H1