Monthly General Meeting
The OCA has a general meeting held on the second Friday of every month* at Chapman University.
Galaxy Clusters: Giants of the Universe - Producer's Cut
Galaxy Clusters: Giants of the Universe - Trailer from Brian Hart on Vimeo.
The latest version of a new documentary project, "Galaxy Clusters: Giants of the Universe," is presented. Clusters of galaxies are the largest gravitationally bound objects in the Universe. A standard measure of their size extends from 3-15 million light-years (approx 1-5 Mpc) across. The warm gas in between the galaxies of the clusters reaches temperatures of 10 million to 1 billion Kelvins. This makes it shine brightly in the X-rays, and assuming that the gas is in hydrostatic equilibrium, the gas is used as a tracer of the dark matter content of the cluster. The high-level structure of galaxy clusters was studied by Dr. Hart through using Chandra X-Ray Observatory data to investigate the structure and behavior of the Universe as a whole.
The movie follows the story of Chandra and documents the achievements by women in space and astronomy. Dr. Hart leads us out from Earth to where the galaxy clusters roam in the depths of the Universe and tells the story of dark matter, dark energy, and the quest to understand the workings of the Universe.
"Galaxy Clusters: Giants of the Universe" is rated NR by the Motion Picture Association of America (MPAA).
Originally from Minneapolis/Saint Paul, Minnesota, Brian Hart obtained his Ph.D. in Astrophysics from the Center for Cosmology at the University of California, Irvine in 2008. Since this, he has held a position as a Federal physicist with the U.S. Army and numerous software engineering positions. In his spare time, Dr. Hart continues to devote himself toward advancing public understanding of science, partially through the movie project being presented at tonight's talk. Dr. Hart is also the Founder and Past Director of the SoCal Science Cafe organization. Dr. Hart currently works full-time with a small software company in Encinitas, California, runs his own software company as well, and resides in San Diego.
These meetings are free and open to the general public.
The meetings take place in The Irvine Lecture Hall with seating for approximately 250 people.
The Irvine Lecture Hall (located adjacent to the Hashinger Science Center) is near the south east corner of the campus
and the nearest cross street is East Palm Ave and North Center Street.
The meetings start promptly at 7:30 PM.
The basic agenda, with approximate times, is as shown below.
7:00 PM - 7:30 PM Pre-meeting Slide Show
Arrival of audience. This presentation includes recent astronomical photographs taken by OCA members.
7:30 PM - 7:45 PM Club Announcements
Usually presented by the OCA Secretary, Bob Buchheim.
7:45 PM - 8:15 PM "What's Up?"
Usually presented by OCA Member and Space Artist, Chris Butler.
8:15 PM - 9:15 PM Main Talk
Speakers are often from JPL/Caltech and other major educational and astronomical institutions.
The level of the talks are usually appropriate for anyone who has an interest in this hobby.
9:15 PM - 9:30 PM Refreshments
Break Donuts, coffee, soda are available for a small donation.
9:30 PM - 10:00 PM "Ask an Astronomer"
Anyone can stay behind and ask a panel of experts any burning question related to this hobby.