45-inch test mirror on 60-inch machine
1937 April
- Title
- 45-inch test mirror on 60-inch machine
- Collection
- Caltech Images Collection
- Series
- Academic Divisions and Departments
- Sub-Series
- Astronomy (Astrophysics)
- Identifier
- 10.19-42
- Dates
- 1937 April
- Extents
- 1 photographs
- Abstract
- Note spherometer in center of disc. Palomar.