Findings:
- Hat Creek Observatory
- Radcliffe Observatory
- ghostland observatory
- From the Earth to the Moon: 4: Reply from the Observatory of Cambridge
- United States Naval Observatory
- Kitt Peak National Observatory
- Harvard College Observatory
- U.S. Naval Observatory
- Vatican Observatory
- Palomar Observatory
- Chandra X-Ray Observatory
- Large Binocular Telescope Observatory
- South African Astronomical Observatory
- Yerkes Observatory
- Compton Gamma Ray Observatory
- Lick Observatory
- Laser Interferometer Gravity-wave Observatory
- Kirkwood Observatory
- Mount Stromlo Observatory
- Paris Observatory
- Cerro Tololo Interamerican Observatory
- Royal Greenwich Observatory
- Arecibo Observatory
- Sudbury Neutrino Observatory
- Barnard Observatory
- Observatory
- Armagh Observatory
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