Chicago Astronomical Society
    
Chicago
Astronomical
Society
...to promote the interest in, and advance the knowledge and understanding of
astronomy, the most ancient and the noblest of the physical sciences.
The next meeting of the Chicago Astronomical Society will be on
Saturday, September 6, 2025
at the
Cernan Earth and Space Center.
Meeting Agenda:

Speaker: Jim Sweitzer, PhD
Topic: Introduction to the Rubin Observatory and its Mission

About the Presentation:

On June 23rd of this year, the Vera C. Rubin Observatory released its first test images to the public and stunned the world. In just ten hours, within a 15 degree field-of-view, it imaged millions of galaxies and discovered over two thousand new asteroids. Designed to gulp wide fields of view at once, it is very different from the narrow gazes of the JWST or Hubble Space Telescope. And, unlike most other observatories, its research will be driven by a 10-year mission to make essentially a time-lapse “movie” of the southern sky — the Legacy Survey of Space and Time. Join me as I review both the impressive engineering of the Rubin’s massive telescope and then preview its fourfold scientific mission. I will focus on how it was designed primarily to map the dark matter structure of the nearby Universe. I will celebrate the groundbreaking research of its namesake, Vera C. Rubin. Finally, I will show how easy it is for anyone to access and explore the images themselves.
Rubin Virgo Cluster Rubin Triffid and Lagoon Rubin M61

About our Speaker:
If Jim Sweitzer were an astronomical body, he might be called a rogue planet. Unlike most folks who graduate from the University of Chicago with a PhD in Astrophysics, Jim chose to turn his expertise to public science education. His first job was with the Adler Planetarium in Chicago where he eventually became Assistant Director. U of C, however, lured him back to help manage the creation of their Center for Astrophysical Research in Antarctica, which found him twice at the South Pole. Jim's next adventure was warmer but equally challenging, directing the creation of the Rose Center for Earth and Space at the American Museum of Natural History in New York City. After its Millennial debut, Jim returned to Chicago to work for DePaul University's Space Science Center, acting as liaison for NASA's Space Science educational mission in a seven-state midwestern region. In 2004, Jim launched SCC, Science Communications Consultants, a firm that advises on the building and renovation of science museums around the globe, including the Shanghai Astronomy Museum, the largest in the world. Jim is also an avid stargazer, delighting in his array of smart telescopes. He is the author of a book entitled Dear Galileo, Letters from a Contemporary Astronomer to his Hero and the writer of SmartStars.blog, helping stargazers appreciate more of what they see through their telescopes. A lover of the dark sky, Jim has recently served on the American Astronomical Society's Committee for the Protection of Astronomy and the Space Environment (COMPASSE), devoted to protecting this vital resource. Throughout his career, Jim Sweitzer has shown that the sky is not the limit of our horizons, but the threshold to an amazing Universe we call home.


Looking Ahead:

Important!

Elections will be held at our September meeting. If you like the CAS and its objectives, please consider running for a board position. The CAS needs your participation! The September meeting of the Chicago Astronomical Society (CAS) will be on
Saturday, September 6, 2025
at the Cernan Earth and Space Center. Event Calendar

Membership ---
If you enjoy the activities of the CAS, please become a member. Regular membership is only $30 for an individual and $50 for a family membership. We now accept payment via Zelle. Join Us!
We would like to thank the Cernan Center and its director Kris McCall for their support of the CAS and astronomy/science education. We encourage CAS members and all others who support science education to purchase memberships for the Cernan Center.
We would also like to thank our members for their past and continued support.