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 October 16th at 8PM at the Observatory.

Public Open House
Our last open house will be October 20th..

Our New Website!!
Be sure to look around as we continue to add to our website. Be sure to checkout becoming a member, the beginner's guide section, and the image gallery of pictures taken by our own members!

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

View the Observatory & Grounds

Open House Nights for 2023

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

May 12, 7:30-10:00PM

June 17, 1:00-4:00PM

July 15, 1:00-4:00PM

August 18, 7:30-10:00PM

September 22, 6:30-9:30PM

October 20, 6:00-9:30PM

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

2023 Partial Eclipse Collage


Annular Eclipse Watch, Evening Observing and Guest Presentation

Sat Oct 14, 2023 10:00 AM - 10:00 PM - At Our Observatory
The solar eclipse begins at 10:37AM and ends at 1:20PM

For More Information and to Buy Tickets for the event click/tap here.

Oct 20, 2023 Open House Night


October 20th Open House Night

For More Information on the Wisconsin Science Festival, click/tap here.

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.