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 September 16th at 8PM at the Observatory.

Public Open House
Our next open house will be August 30th, Friday.

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

View the Observatory & Grounds

Open House Nights for 2024

We are pleased to announce we have established an Open House schedule for this year.

May 31 , 2024, 7:00-10:00PM

June 15, 2024, 1:00-4:00PM

July 13, 2024, 1:00-4:00PM

August 30, 2024, 6:00-10:00PM

September 27, 2024, 6:30-9:30PM

October 18, 2024, 5:30-9:30PM

Click/Tap here to sign up for our email reminders of upcoming Open House nights.

S&T: This Weeks Sky At A Glance

Astronomy Magazine: The Sky This Week

A sampling of astronomical images taken by members of the MAS, and all of them taken with our observatory equipment. See many more images by our members in our Showcase pages. Almost 1500 images!

MAS Observatory panorama at dusk.

Telescope available for rental to our members.
MAS Loaner Telescope Program. We have telescopes available for loan to our members! Click/tap here for details.