Glass positive:- Dark Nebula in Sagittarius
- Made:
- 1922 in Mount Wilson
- maker:
- Hinton and Co.
Glass positive:- Dark Nebula in Sagittarius, Barnard 92, R.A., 18h 11m, decl,-18 degrees 15', Mount Wilson Observatory, 1922, June 24, 100-inch Reflector, focal length, 42ft, exposure, 4 hours see 1912-456, 17" x 14"
