The Development of Astronomy During the Middle Ages and Early Renaissance
Among the topics to be covered:
OCA member for 18 years; editor of the Sirius Astronomer from 2003-present; served two terms as a Trustee (2006-2007). Graduate of UC San Diego (1991) with a degree in the history of science, emphasizing medieval and Early Modern scientific development.
- The development of mechanical timekeeping, which would be critical to the development of astronomy as a whole
- How prohibitions made by the Church against certain lines of Aristotelian thought actually resulted in stimulation of modern scientific thinking
- Development of the astrolabe, armilliary sphere, and various models of the universe
- Influences from the Arab world, and the role trade and exploration played in developing astronomy
- Notable figures from the period
Watching an Aurora
I have a brief explanation of the Aurora followed by a travelogue of our Alaska trip last year. I end with the photos and video I made of the Aurora.
I've been a member since 2003, just before the great Mars opposition when it was as big as the moon. I'm on the board for I think 4 years now, I'm an observatory holder, and my main interest is astroimaging. I have taught the beginner's class in astrophotography for over 6 years now. I graduated from the University of Texas with a degree in biology and went to medical school at the University of Texas at Galveston. I did my internship and residency at LAC-USC and a hand fellowship in Los Angeles. I have been practicing orthopedic surgery with a specialty in hand surgery in the Laguna Hills area since 1983. I'm married to Diane who is a physical therapist specializing in hand therapy and have 2 grown children Chris and Becky.
Chris Butler will present "What's Up?" in the current evening sky.