Welcome to the home page of the Columbus Astronomical Society, an organization devoted to the enjoyment of Astronomy. Founded at OSU in 1947, we have been sharing our love of astronomy with Central Ohio at star parties, science fairs, schools, and anything astronomical.

We have monthly meetings and regular activities. Meetings are normally at Perkins Observatory (SR 23, 10 Miles North of I-270 towards Delaware) on the second Saturday of every month (8pm start time). Guests are always welcomed. If it is clear, bring your telescope!

Upcoming Meetings, Announcements, and Events:

Upcoming Event – Night Under the Stars – July 30th 2016

CAS Picnic 2014
CAS Picnic 2014


The Columbus Astronomical Society has over 200 members with a variety of interests. ATMs, photographers, observers, telescope specialists, and much more. We look forward to you joining with us!

For a fun time-lapse look at the building of the above photo, click here (You Tube Video) Thanks Brad Hoehne!