Opening hours of Observatory in Grattai, New South Wales Opening hours of Observatory in Grattai, New South Wales Home / New South Wales / Grattai / Observatory Planetarium Mudgee Observatory 961 Old Grattai Rd, Grattai NSW 2850, Grattai, New South Wales 2850 (02) 6373 3431 Categories of local businesses in Grattai Cabin rental agency Community center Hotel Observatory Planetarium