About our Society

 The Astronomical Society of Eastern Missouri (ASEM) is an Astronomy club designed to put fun and passion into astronomy. We are based in St. Charles County, Missouri, and draw heavily from the St. Louis Metro area. Our members range in age from 8 to 85 and we all “love” Astronomy. We are very family friendly. We love to “share the view” through our public outreach and education programs, our meetings, our special interest groups (SIGs), our events, our relationships with other area clubs and national organizations, and sometimes just with each other while under the stars. While you are at this website, we trust you will get a feeling for our fun with, and passion about, Astronomy.

ASEM Membership Benefits. Becoming a member provides you with the ability to borrow an ASEM club telescope. A variety of instruments for any skill-level and ability are available for you to use.  New Member Info including membership application.

You do not need to be a member to attend any of the following monthly ASEM events:

  • Beginners Meeting. is on the first Thursday of the month, starting at 7pm, location varies. Watch this website for the next month’s location. link to Beginners-Corner
  • General Meeting. It’s on the second Saturday evening of the month. A Pot Luck dinner, main dish provided, starts at 6pm, and the informational General Meeting starts at 7pm. If you're wondering  about what to bring to the Pot Luck, contact our Hospitality committee. hospitality@asemonline.org
  • Digital SIG (astrophotography). It’s on the third Tuesday of the month, starting at 7pm. You do not need expensive equipment to get involved. Link to SIGs
  • DIY-ATM SIG (do it yourselfers). It is usually on the fourth Wednesday of the month, starting at 7pm.  Check the calendar, below.  Link to SIGs

 Weekly Public Telescope Viewing. Every clear Friday evening, ASEM members volunteer their time and telescopes at the Broemmelsiek Park Astronomy Viewing Area. Observing starts at sunset and lasts for two hours. This occurs all year ‘round. The “Latest News Flash” block gives updates on weather and observing conditions for the upcoming Friday evening. Directions to Broemmelsiek

ASEM NEWSLETTER The monthly ASEM newsletter has announcements and useful information. ASEM News Here

ASEM Astronomy Outreach Events Click here to contact our ASEM Outreach Coordinator. outreach@asemonline.org

Thousands of people, young and old, enjoy the views through ASEM members' telescopes. During the day, solar viewing, done safely and correctly, is exciting. During the evening, beautiful objects of the night sky can be experienced in our telescopes. Outreach Fun Here

Buying something on AMAZON?  Use Amazon SMILE and they will donate 0.5% funds to our 501c3:  https://smile.amazon.com/ch/20-1412184

Recent Announcements

  • September 2020 Newsletter
    Posted Aug 31, 2020, 9:11 AM by Dan Crowson
  • August 2020 Newsletter
    Posted Aug 4, 2020, 7:26 PM by Dan Crowson
  • July, 2020 Newsletter
    Posted Jul 2, 2020, 8:03 AM by Dan Crowson
  • June, 2020 Newsletter
    Posted Jun 9, 2020, 4:50 PM by Dan Crowson
  • May, 2020 Newsletter
    Posted May 5, 2020, 6:40 AM by Dan Crowson
Showing posts 1 - 5 of 179. View more »
                                                    Our Members in Action...........

ASEM Public Outreach Pictures



Latest News Flash



Our next free weekly FNOH* Public Viewing session is scheduled on Friday night, September 4, 2020, at Broemmelsiek Park in St Charles County.  The viewing sessions usually run from SUNSET to about 2 hours later this time of year.  See below for directions to the park.  A public viewing session is scheduled for every Friday night when skies are clear.  We recommend that you bring bug repellent and WATER or other fluids.

Our next General club meeting will be at Broemmelsiek Park on Saturday, September 12th.  See the newsletter for more infomation.

Our next Beginners Meeting is Scheduled for Thursday, April 2nd, 2020. at the Weldon Springs Interpretive Centers Meeting room. Meeting will start at 7 P.M. and run to 9 P.M.  This meeting is open to anyone. While meetings are on hold, we're more than willing to help at Broemmelsiek Park or possibly via Zoom. Please contact admin@asemonline.org.

Our Next Digital SIG meeting is scheduled for Tuesday, September 15th from 7 until 9??? P.M. We will have a virtual meeting using Zoom. The 'doors' will open at 6:30 PM CDT. Alistair Symon (http://www.woodlandsobservatory.com/) will talk about how to produce deep wide field mosaics. Bill Neubert will discuss eyepiece projection using modern cameras with 1080p video mode.

Please send an email to dcrowson at crowson dot com to get access to the Digi-SIG zoom meeting details.

The next Do It Yourself meeting is scheduled for Wednesday, September 22nd at 7PM.

Dear Visitors: Please observe these requests while you are at the public viewing.

See the Online Weather Sources used to make the weather related call.

*Friday Night Open House



Important Links

Want to request a Star Party (or have another request)? Click here 

Help our Program Committee, make suggestions/requests for program material here.

Map to Weldon Spring Interpretive Center - site of indoor meetings

Map and information about the Broemmelsiek Park observing site - a premier viewing area.

Important Astronomy Resources
River Bend Astronomy Club
Mid-States Region of the Astronomical League
Astronomical League

We have a FaceBook page for St. Louis Astronomy
Please visit it and become a fan.

Users of the astronomy area at Broemmelsiek Park may also be interested in the St. Charles County FaceBook page.
Clicking on an event in the calendar brings up more information.

ASEM Calendar

  To Make Calendar Entries 1) must be an ASEM member; 2) Use your ASEMonline.org email account userid and password or "Sign In";  3) Open Google Calendar.  You will then be prompted  to sign in if not before.  After you sign in the calendar Google will present you with your Calendar.  You may have more than one.  One will be the ASEM calendar (choices on left), make sure it is clicked on.  This assumes your ASEMonline.org email account has been properly linked to Google. Then just update the calendar as you would any other Google calendar.  On the event, if it shows up in YOUR calendar and not in the ASEM calendar, edit the event to change which calendar it is on.

Every wonder what astronomers look at up there in the sky through a telescope?  Watch our slide show then visit our Links to Members Pages

Contributed ASEM DigitalSIG Images

Danville Clear Sky Chart

Broemmelsiek Park Clear Sky Chart