Royalty-Free Observatory Photos, minimum size: 4k
- 2800x800 Public Domain
- 5184x3888 Public Domain
- 4896x3264 Public Domain
- 6000x3760 Public Domain
- 5690x3793 Public Domain
- 5472x3648 Public Domain
- 5616x3744 Public Domain
- 4650x3100 Public Domain
- 3957x3957 Public Domain