Milwaukee Astronomical Society

Milwaukee Astronomical Society

Astronomy is our hobby! Dedicated to the fun of astronomy at all levels from beginner to expert, casual viewing to scientific research. We welcome everyone interested in astronomy. Find out more about us.

MAS General Meetings
Our next General meeting will be on November 15th at 8PM at the Observatory.

Public Open House
Sorry, there are no more open houses in 2019. We will have a new season next year starting in late April / early May.



MAS Observatory occupies 3 acres at 18850 W Observatory Rd in New Berlin, WI  53146

View the Observatory & Grounds



Open House Nights for 2019

June 22, 1:00-4:00PM

July 19, 8:00-10:30PM

August 23, 7:30-10:00PM

September 6, 7:00-10:00PM

October 5, 6:30-9:00PM

October 25, 6:00-9:00PM



For sky updates:

S&T: This Weeks Sky At A Glance

Astronomy Magazine: The Sky This Week






Just a very small sampling of wonderful astronomical images taken by members of the MAS! See many more in our Showcase page.

MAS Observatory panorama at dusk.