Photograph film positive
- Made:
- 1920 in Mount Wilson
Photograph film positive, 16" x 20" central part of the Great Nebula in Orion, photographed with the 100-inch Hooker Telescope of the Mount Wilson Observatory 1920, March 18, exposure 1 3/4 hours
Photograph film positive, 16" x 20" central part of the Great Nebula in Orion, photographed with the 100-inch Hooker Telescope of the Mount Wilson Observatory 1920, March 18, exposure 1 3/4 hours
