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 January 19th at 8PM at the Observatory.

Public Open House
Our last open house was held on October 18th. Hope to see you next year when we'll have a new schedule of dates.

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 2026

We are pleased to announce we have established an Open House schedule for 2026.

May 15, 2026, 7:00-10:00PM

June 20, 2026, 1:00-4:00PM

August 27, 2026, 7:30-12:00AM

September 18, 2026, 6:30-9:30PM

October 2, 2026, 6:30-9:30PM

October 23, 2026, 6:00-9:00PM

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

Can the Star of Bethlehem be explained scientifically? Here is an article written by Luverne Armfield who was the founder of the Milwaukee Astronomical Society.

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Membership Information
Application Information
MAS Bylaws
Our New MAS Members

Membership Info
Application Info
MAS Bylaws
Our New Members

Membership Information
Application Information
MAS Bylaws
Our New MAS Members

What's New Solar Lunar Planets Globular Open

Nebulae Galaxies Planetary Comets Wide Field Other

MAS History Members Awards A-Scope Log Books 1932-39 1940-49

1950-59 1960-69 1970-79 1980-89 1990-99 2000-09 2010-19

For Members Page
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Stargazing Spring Sky Tour Summer Sky Tour Autumn Sky Tour

Winter Sky Tour Constellations The Sky by Eye Star Hopping

Stargazing Spring Sky Summer Sky Autumn Sky

Winter Sky Constellations Sky by Eye Star Hopping

Stargazing Spring Sky Tour Summer Sky Tour Autumn Sky Tour

Winter Sky Tour Constellations The Sky by Eye Star Hopping

Beginner's Guide Getting Started Stellarium Asterisms Celestial Sphere Telescopes

Using Telescope Solar System Deep Space Objects Double Stars Star Hopping Day and Time

Beg Guide Get Started Stellarium Asterisms Cel Sphere Telescopes

Using Telescope  Solar System  DSOs  Double Stars  Star Hopping  Day and Time

Beginner's Guide Getting Started Stellarium Asterisms Celestial Sphere Telescopes

Using Telescope Solar System Deep Space Objects Double Stars Star Hopping Day and Time

Sky Chart
Solar Activity
Artificial Satellites
Meteor Showers
Lunar Phases
Dark Observing Sites

Z UMa Project
Julian Date Conversion
EB Ephemeris
RR Lyrae Ephemeris

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