About the MAS  • Message from the MAS President  • Meetings & Calendar  • Officers & Staff  • Public Observing Night Schedule  • MAS Focal Point Newsletter  • MAS Apparel  • Observatory Map & Directions Membership Information MAS Observatory Observing Information Variable Stars Special Projects Special Events Astronomy Links Astronomy Vendors MAS Personal Sites MAS Showcase MAS Archives Map and Directions to the MAS Observatory The MAS observatory is located at 18850 Observatory Road in New Berlin, WI, southwest of Milwaukee.  The phone number is (262) 542-9071. For you convenience a map is located below. Click on the map to obtain directions from Mapquest Get Your Own Visitor Globe!