Film positive (9 7/8" x 7 3/4") Nebula N.G.C. 4594
- Made:
- 1923 in Mount Wilson
Film positive (9 7/8" x 7 3/4") Nebula N.G.C. 4594, exposure 2 1/4 hours, 60-inch Telescope
Film positive (9 7/8" x 7 3/4") Nebula N.G.C. 4594, exposure 2 1/4 hours, 60-inch Telescope