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
There are no general meetings until September. But you can meet with us at any of the upcoming Open House nights!

Next Open House: August 7th
7:30PM at our Observatory. More info can be found here.

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Public Viewing Nights

A̶p̶r̶i̶l̶ ̶2̶4̶, 7:30PM

M̶a̶y̶ ̶8̶, 7:30PM

J̶u̶n̶e̶ ̶2̶0̶, 6:00PM

August 7, 7:30PM - Pluto

August 21, 7:30PM - Pluto

September 11, 7:30PM

September 27, 7:30PM
Total Lunar Eclipse

October 9, 7:30PM

At our observatory, more info here.

For those wondering what`s the amazing grouping of bright stars in the western sky, it`s Venus and Jupiter! Venus is the brighter of the two.

Jupiter is bright in the western sky at sunset, next to the brighter Venus.

Saturn is past opposition, but still visible most of the evening.

Venus is bright in the western sky after sunset.

See more sky updates:

S&T: This Weeks Sky At A Glance
Astronomy Mag: The Sky This Week

Jupiter Rotation by Tamas Kriska

Image of the rotation of the planet Jupiter by MAS member Tamas Kriska.  He used the Buckstaff Telescope at our observatory which is a 12.5 inch, f/7.4 reflector.  The picture was taken with a 2X barlow at prime focus with his Canon 60D DSLR. The individual images were taken from a VGA movie (essentially taking the best images out of many) over 4.5 hours and then combining them using AutoStakkert with post processing in Photoshop to create this final animated GIF. Click here to see this and other MAS member images in our Showcase.   

Partial Solar Eclipse on Oct. 23th was obscured in the Milwaukee area because of clouds. Our next chance will happen on Aug. 21, 2017. That one will be a total eclipse if you're willing to drive a bit. The path of totality goes through southern Illinois and Missouri! It's not too early to start planning. Click here for details.
See previous articles from the MAS front page in the Article Archive.


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Current Sky Chart from Heavens Above  



Globular Clusters
Open Clusters
  Click for Observing Info

Sky Chart
Solar Activity
Artificial Satellites
Lunar Phases



  Variable Stars

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