Spectroheliograph
Espectroheliógrafo
- Date
- 1889-1892 · confidence medium
- Place
- Chicago, Illinois, United States
- Credited to
- George Ellery Hale y Henri-Alexandre Deslandres
- Field
- Communication
What it is
Astronomical instrument that captures monochromatic photographic images of the Sun at a single spectral wavelength; developed independently by George Ellery Hale, at Chicago's Kenwood Observatory, and Henri-Alexandre Deslandres, in Paris.
What it led to
- Study of solar activity and chromospheric prominences
- Specialized solar observatories (Mount Wilson, Meudon)
- Monochromatic imaging techniques in astrophysics