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THIS IS A FREE EVENT FOR EVERYONE
THIS IS A FREE EVENT FOR EVERYONE
INTERESTED IN THE SKY.
INTERESTED IN THE SKY.
September 19, 2026
4pm to 9pm
Broemmelsiek Park Astronomy Site
1615 Schwede Rd. Wentzville MO 63385
ASEM, the Astronomical Society of Eastern Missouri, is hosting a celebration of John Dobson and his innovative reflector telescope design.
Other participating clubs include St. Louis Astronomical Society,
River Bend Astronomy Club, and Eastern Missouri Dark Sky Observers
Dobsonfest 2026
Dobsonfest 2026
Activities for all ages
Family Friendly!
Free telescope viewing at night
Safe solar viewing during the day
Information on how to get to know the night sky
Have a telescope? Need help using it? Experienced volunteers will be glad to help.
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 Dobsonian telescopes following his design. We are celebrating his 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, kids activities, family friendly gear, electronics, building your own instrument, and tech for viewing. Appreciate John Dobson's contribution to bringing the universe to everyone. A food truck will be available.
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.
Dobsonian Telescope users at the Broemmelsiek Park Astronomy Site
Dobsonian Telescope users at the Broemmelsiek Park Astronomy Site
This 10 inch Dobsonian built by Ed White got a lot of use as an outreach telescope.
This 10 inch Dobsonian built by Ed White got a lot of use as an outreach telescope.
A 32 inch Dobsonian was installed at the Broemmelsiek Park Astronomy Site, January 2020.
A 32 inch Dobsonian was installed at the Broemmelsiek Park Astronomy Site, January 2020.
A family learning to use a Library Telescope, a small Dobsonian.
A family learning to use a Library Telescope, a small Dobsonian.
Visitors at a Friday Night Open House view through Carl Turek's Dob.
Visitors at a Friday Night Open House view through Carl Turek's Dob.
A Friday Night Open House visitor using a 16 inch Dobsonian at Broemmelsiek Park Astronomy Site.
A Friday Night Open House visitor using a 16 inch Dobsonian at Broemmelsiek Park Astronomy Site.
Brad Griffin and an 18 inch Obsession Dob.
Brad Griffin and an 18 inch Obsession Dob.
John Dobson grinding a telescope primary mirror
in St. Louis.
John Dobson helping a novice mirror maker.
The Moon will look like this on September 19, 2026
The Moon will look like this on September 19, 2026
Here is a sky map for 8:30pm, September 19. The Moon will be next to Saturn.
Here is a sky map for 8:30pm, September 19. The Moon will be next to Saturn.
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