| Advanced Technology Telescope | |
| Organization: | Australian National University |
| Location: | Siding Spring Observatory |
| Altitude: | 1,165 m |
| Website: | | style = | diameter = 2.3 m| diameter2 = 0.3 m| diameter3 = | angular_resolution = | area = | focal_length = f/2.05| mounting = Altazimuth mount| dome = Co-rotating| commons = } |