Multi-slit spectrograph and H alpha Doppler system

Details Multi-slit spectrograph and H alpha Doppler system Multi-slit spectrograph and H alpha Doppler system

Aug 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974soph...37..343m&link_type=abstract

Solar Physics, vol. 37, Aug. 1974, p. 343-350. Research supported by the Lockheed Independent Research Funds;

Physics

5

Chronophotography, H Alpha Line, Solar Flares, Solar Spectrometers, Spectroheliographs, Bandpass Filters, Beam Splitters, Doppler Effect, Slits, Solar Prominences

Scientific paper

Description of the design and operation of a multiple-entrance-slit spectrograph, built for time-lapse photography of the spectra of flares and other transient solar phenomena. This spectrograph employs narrow-band filters to limit the wavelength range of the spectrograph to a few angstroms centered at H-alpha or other spectral lines. A polarizing beamsplitter, prior to the slits, provides a prefiltered second solar image to a narrow band H-alpha Doppler filter for simultaneous photography in the wings of the H-alpha line. The spectrograph and the H-alpha Doppler system constitute a flexible instrument in which components may be substituted to achieve different passband widths, image scales, dispersions, and corresponding numbers and spacings of adjacent spectra at a selected wavelength.

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