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.

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MAS General Meetings
Our next General meeting will be on August 14th at 8PM at the Observatory.

Public Open House
Our next Open House night will be on August 25th at 8:00PM. See the full schedule below.

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Public Viewing Nights

Open House Nights for 2017

May 26, 8:00-11:00PM

June 17, 4:00-8:00PM

August 11, 8:00-11:00PM

August 25, 8:00-11:00PM

September 22, 7:00-10:00PM

September 29, 7:00-10:00PM

October 13, 7:00-10:00PM

For sky updates:

S&T: This Weeks Sky At A Glance

Astronomy Mag: The Sky This Week

Unfortunately, we will not be holding an open house at the observatory on August 21 for the solar eclipse. Read why almost every member of the society will be traveling outside the state for this event.

New Images in the Showcase. See these and many more taken by our members in the Showcase.

Eclipse glasses? They are the hottest item around and they are now almost impossible to find. We've been getting a lot of requests for where to get them, but we're at a loss. Even if we find a place that has them, by the time we relay it that source will be out. Your best bet is to do an internet search.


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Current Sky Chart from Heavens Above  



Globular Clusters
Open Clusters
Wide Field
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Sky Chart
Solar Activity
Artificial Satellites
Meteor Showers
Lunar Phases


  Variable Stars

Z UMa Project
Julian Date Conversion
Eclipsing Binary Ephemeris RR Lyrae Ephemeris