( Click Here to be a Sponsor of the Edwin P. Hubble Lecture Series )

Our next general meeting will be held
Tuesday, August 13, 2019, 7:00-9:00 PM,
at the Cernan Space Center, 2000 fifth Ave., River Grove, IL

Our main speaker will be Susan Wilson.
The topic of her talk is "Polishing Optical Surfaces: The Computer Revolution."
Optical polishing for amateur telescopes has not changed has not changed much for centuries.
However, within the next decade, there will be a renaissance, as computer-controlled polishing becomes more affordable.
Susan will discuss how the ability to make free-form optics has revolutionized optical design, making compound optics less common.

Susan will also discuss the basics of computer-controlled polishing for large astronomical mirrors and will update us on the European Southern Observatory Extremely Large Telescope and the University of Arizona Steward Mirror Lab's work on the Giant Magellan Telescope.

Susan Wilson
Susan Wilson received her BS degree in physics from the University of Arizona and her MS and PhD degrees in electrical engineering from the University of New Mexico. After her schooling, she worked for a photo lithography manufacturer, then moved to Minneapolis, where she worked for Seagate, where she learned production manufacturing of disk drives. Her next career move was as application/installation engineer of 5-axis CNC robotic polishing machines for a UK company. Susan currently owns her own R&D firm, focused on polishing extremely smooth metal surfaces. Susan is also a member of the Naperville Astronomical Society.

Hope to see you at Cernan on August 13th
Jim Cuca, president


Remaining Meetings for 2019
All of our general meetings are open to the public, free-of-charge. The main entrance at Adler will be closed, so please use the doors just south of the main entrance.
September 10, 2019 at Cernan Earth and Space Center
October 8, 2019 at the Adler Planetarium
November 12, 2019 at the Adler Planetarium
December 10, 2019 at the Adler Planetarium

CLICK HERE to see a list and photos
of past meetings & events.

CAS General Meetings are held at 7:00 pm on Fridays each month, usually at the Adler Planetarium or alternatively
at the Cernan Space Center  of Triton College depending on availability
Please follow our CAS website, Facebook and Meetup pages for meeting updates for this and other CAS activities.

Unless otherwise noted
General Membership Meetings

Are once a month.  Please check the "Meeting Schedule"
for date, time, and location.


or alternatively at the CERNAN EARTH AND SPACE CENTER of Triton College
Check our " Meeting Schedule " & " Hubble Lecture Series Sponsorship "

Board Meetings
One hour before the regular meeting
Open to all CAS members

Stargazing Meetups

Welcome! CAS Stargazing Meetups are open to the public, including scouting & school groups, and are free. Please check with CAS Facebook page and website to double-check the LOCATION of the meetings. We have a couple stargazing meet-ups each month in the spring, summer and fall. These are free. Feel free to bring a telescope or binoculars if you have them. The indoor portion of these meetings are rain or shine. Click here to see a listing of Stargazing Meetups.

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