Results for "Twitter"
Oakridge Observatory
- Date: October 16, 2004
- Creator: Dorwin, Harold
- Creator: Dorwin, Harold
Plan of the Astrophysical Observatory
- Creator: Unknown
- Creator: Unknown
Project Records, 1967-1970
- Date: 1967 1967-1970
- Creator: Mt. Hopkins Observatory
Astrophysical Observatory, Unidentified Location
- Date: Undated
- Creator: Unknown
SAO Slide-rule Machine
- Date: 1931
- Creator: Unknown
- Creator: Unknown
Smithsonian Astrophysical Observatory, South Yard
- Date: c. 1900
- Creator: Unknown
- Creator: Unknown
Astrophysical Observatory, Temporary Station, Bassour, Algeria
- Date: 1911 1911-1912
- Creator: Unknown
The Periodometer, a New Instrument for Analysing Solar Records
- Date: 1930 Between 1930 and 1934
Smithsonian Astrophysical Observatory Testing at Camp Lee, Virginia
- Creator: Unknown
- Creator: Unknown
One of the Instruments Used to Determine Sunlight Intensity and Sky Brightness
- Date: 1930 Between 1930 and 1934
Expert Mechanician Making Delicate Instruments for Solar Observations
- Date: 1930 Between 1930 and 1934
New Dwelling at Mt. Montezuma, Chile
- Date: 1939-1940
- Creator: Unknown
- Creator: Unknown
