Siding Spring Mountain Observatory – RSAA – ANU Mountain with Anglo-Australian Telescope dome visible near centre of image at an altitude of 1,165 m (3,822 ft)Coonabarabran, Warrumbungle National Park, NSW. Siding Spring Mountain [Mount Woorat] with Anglo-Australian Telescope dome visible near centre of image at an altitude of 1,165 m (3,822 ft).