CAS Monthly Meetings and Astronomical Programs are held the Saturday closest to the Full Moon at the Mars Hill Campus of Lowell Observatory, Hendricks Center for Planetary Studies Auditorium (6:45 pm - 8:00 pm., unless otherwise noted) followed by refreshments, and informal discussion. Meetings are open free to the public.
Saturday, January 7, 2023
Presenter Jeronimo Vasquez and Bryan Bates
Title: “The Mayan Calendar: Its cultural roots and Astro-mathematical foundations”
Through long-term observation of the sky, the Maya documented the movement of the planets and stars and built the most fascinating and accurate calendars known.
It was predicted that the world would end (yet again) on Dec 21, 2012 when the Maya Calendar reached its first Baktun Anniversary since the Mayan leader-deity Maize God raised up the sky with the sacred Ceiba Tree. The world never ended because the Maya never predicted the ending, but rather based their calendar on cycles that repeat over time. All are welcome.
Saturday, February 4, 2023
Presenter Dr. Padraig Houlahan
Title: “Your first telescope - Getting started in Astronomy”
Got a telescope over the holidays, or plan to get one? Padraig will be discussing how to choose a telescope and what you might reasonably expect to observe. He will review the different types of telescopes available to the amateur astronomer, their basic optics, and show how you can easily take lunar photographs using your cellphone camera with a telescope.
If you have questions about your new telescope, bring it and Padraig and other CAS members will be happy to answer them.
Background: Dr. Houlahan received his BA in Theoretical Physics from Trinity College Dublin, Ireland, and his MA and PhD in Astronomy from the University of Texas, Austin. Padraig was Director of Information Technology at Lowell Observatory, and in 1995 Asteroid Houlahan (8407) was named in his honor. He has taught at both Coconino Community College and Embry-Riddle Aeronautical University in Astronomy and Physics.
Saturday, March 4, 2023
Presenter Dr. Tyler Richey-Yowell, Lowell Observatory
Title: “The Evolution of (what we know about the potential habitability of planets around) K Stars ”
Efforts to discover and characterize habitable zone planets have primarily focused on Sun-like stars and M dwarfs. Yet the intermediate K stars provide an appealing compromise between these two extremes that has been relatively unexplored. Compared to solar-type stars, K stars are more abundant, maintain longer main-sequence lifetimes, and their planets are more suitable to observations based on the mass and radius ratios of the planet to star. While M stars also excel in these regards, they have been observed to have frequent flares with ultraviolet (UV) energies over 100 times greater than anything observed in the recent history of our Sun.
Background: Dr. Tyler Richey-Yowell is Lowell Observatory’s first Percival Lowell Postdoctoral Fellow. She is interested in habitability and the star-planet connection. During her academic career, she has been able to work with data from optical telescopes ranging in size from 4.2 cm to 10 meters, and radio dishes even larger (VLA). She hopes to work with gamma rays at some point in the future.
Saturday, April 15, 2023
Presenter Tom Polakis
Title: “Astroimages: More Than Just Pretty Pictures”
Astronomical imaging has made great strides in the past decade alone. Often, the emphasis is placed on the sharpness of stars and the trueness of colors. But is that all there is to see? In his presentation, Tom will dig deeper into his images and videos to show such features as the influence of the earth's atmosphere, effects of geometry and perspective, and distances and velocities, typically using no more than high school-level math. Pictures really are worth a thousand words.
Tom Polakis has been an active amateur astronomer for 45 years, during which has seen Saturn circle the sun 1½ times. His main interests involve visual observing of all astronomical phenomena, and imaging of same with equipment ranging from a phone to a backyard observatory. He has a particular interest in describing the universe as an ever-changing entity. His writing and photography have regularly appeared in magazines such as "Astronomy" & "Sky & Telescope," and more recently has been an author or co-author in refereed astronomical publications.
Saturday, May 6, 2023
Saturday, June 3, 2023
Title: “CAS Summer Picnic”
Saturday, July 8, 2023
Saturday, August 5, 2023
Saturday, September 30, 2023
Saturday, October 28, 2023
Saturday, November 18, 2023
CAS Member Activity Presentations
Theme: “See Below”
Each year CAS members are active in the pursuit of their avocation of Astronomy. At this meeting 4-6 members will present 10-15 minute overviews of the activities and achievements they were involved in during the preceding year.
Saturday, December 2, 2023
CAS Christmas Dinner
Membership in CAS is open to all interested in learning more about astronomy and telescopic observing. Membership entitles you to attend, and be involved with, the monthly general meetings, as well as special club events, observing sessions, and star parties, at our Dark Sky Observing Site. Annual and monthly events postcards with CAS happenings are mailed to all Members.
Besides “Regular Membership,” CAS has “Household Memberships” for two adults at the same address, “Junior Memberships” for students, and “Sponsoring Memberships” for those wishing to help support the Society.
If you are interested in becoming a member use the brochure application form, or the one on our website ( Join Us) web page
For questions you can email us at: firstname.lastname@example.org, or contact Anne Wittke, CAS Treasurer, at (928) 606-2064.Top
Board meetings are held on the Thursday preceding the regular Saturday meeting at the Mars Hill Campus of Lowell Observatory, Hendricks Center for Planetary Studies Auditorium. The meetings are open to all CAS members but the mailing list for the meetings only includes the board members.
Board meetings are held online using Zoom.Zoom opens at 6:30pm, meetings at 6:45pm
Due to the Croonavirus Williams Public Observing has been cancelled until further notice
On the Friday evening closest to First Quarter Moon, April through October, CAS hosts its monthly community outreach program to educate and promote interest in Astronomy to the general public.
CAS members set up their telescopes at Glassburn Park in Williams, and invite the public free of charge to observe the Moon and other visible objects in the night sky
Location:Glassburn Park - in the natural area west of Rod’s Steakhouse parking lot.
Take I40 west. Exit 165 into Williams. The park is about 2-3 blocks after the hill, just past the edge of town on the right.