Calcium and Hydrogen Flocculi
- Made:
- 1903 in Lake Geneva
- photographer:
- F Ellerman and George Ellery Hale
Calcium and Hydrogen Flocculi, surrounding the great Sun-spot of 1903, October 9 low level H1. slit at 3962, 3h 43m. C.S.T., medium level H1. slit at 3966, 3h 43m. C.S.T. taken with the Rumford Spectroheliograph and 40-inch refractor of Yerkes Observatory by G.E. Hale and F. Ellerman
