September 19, 2026
4pm to 9pm
Broemmelsiek Park Astronomy Site
1611 Schwede Rd. Wentzville MO 63303
ASEM, the Astronomical Society of Eastern Missouri, is hosting a celebration of John Dobson and his innovative reflector telescope design.
Activities for all ages
Free telescope viewing at night, safe solar viewing during the day
Information on how to get to know the night sky
Here is an aerial view of the Broemmelsiek Park Astronomy Site.
Who? John Dobson's life mission was to show planets, stars, and galaxies to everyone. He developed an inexpensive way to make telescopes that are simple to use. Thousands of people have made their own telescopes following his design plans. We are celebrating his wonderful life of sharing the universe.
When? Saturday, September 19, 2026
What time? 4pm to 9pm. Food Trucks will be on site.
Where? the Broemmelsiek Park Astronomy Site
1611 Schwede Rd, Wentzville, MO 63385
St. Charles County Parks and Recreation Park info
What's happening?
During Daylight: Displays and info about telescopes, local clubs, library loaner telescopes, family friendly gear, electronics, building your own instrument, and tech for viewing. Appreciate John Dobson's contribution to bringing the universe to everyone.
Need Help? Do you have a telescope, but need help putting it together? Or pointing it at sky objects? Bring it to the party, and ASEM volunteers will help get your scope going. Doing this during daylight is easier than trying to fix things in the dark. You can get expert help with choosing a telescope as well.
After Dark: Views of the Moon, Saturn, Star Clusters, Nebulas, Supernova Remnants, Dead Stars, Colorful Stars, and more through various telescopes.
John Dobson helped St. Louis area people make their own telescopes.
John Dobson grinding a telescope primary mirror
in St. Louis.
John Dobson helping a novice mirror maker.