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- Astronomical observatories[remove]453
- Observatory domes223
- Landscapes170
- Astronomical instruments154
- Mountains134
- Panoramas124
- Refracting telescopes90
- Snow77
- Housing48
- Reflecting telescopes36
- Spectrometer35
- Dormitories27
- Portraits22
- Buildings15
- Outbuildings15
- Astronomical photometry14
- Carriages and carts12
- Micrometers (Instruments)10
- Roads10
- Telescopes8