Black Hills Astronomical Society Meetings and Activities
Meetings are held on the dates listed below (third Mondays, September through May) starting at 7:00 p.m.
at the Journey Museum, 222 New York Street.
and Star Parties are held on selected Friday evenings at the Hidden Valley Observatory
starting at dusk (about 9 PM in the summer, 7 PM in the fall) unless the sky is cloudy.  Specific dates are listed below
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Our regular meetings are held at 7 p.m. at the Journey Museum on 3rd Mondays each month in September through May, and usually begin with a program of interest to the general public and the members.  Following the program, we hold our business meeting at which interested members of the public are welcome.

2019 Meeting Dates and Programs at 7 p.m. (except as noted)


Jan 21 - Craig Howe - Director, Center for American Indian Research and Native Studies - Explorations of the Lakota Universe

Beginning over 200 years ago, traditional Lakota pictorial calendars, called "winter counts", recorded celestial events such as eclipses, comet sightings, and meteor showers that were seen in the Northern Plains skies. The dozens of diagrammatic drawings of these events are evidence that Lakota ancestors observed the night sky, and provide engaging origin points for this presentation to explore Lakota cosmology and star knowledge.

Feb 18 - Arjun Ayyangar, Solar System Ambassador - Black Holes

Mar 18 - George Gladfelter, How did this astronomy thing get started, and what's it doing for us today?

Apr 15 - Nick Chmielewski and Don Teets -Orbit Determination from Astrophotography

May 20 - Frank Belinskey - The Jovian System, Part 1: Jupiter's Properties, Atmosphere, and Environment

June through August - Star Party Workshops are offered for free to the public at the Hidden Valley Observatory on selected nights.  For 2019 the dates are Friday* June 7, Friday* July 19, and Saturday, August 24. 

* If the weather is unfavorable on a Friday night, the workshop will be held on the next evening if the weather then permits viewing.

Sep 16 - TBA

Oct 21 - TBA

Nov 18 - TBA

Dec 16 - Members' Party


"Star Parties" and Other Events


Our Star Party Workshops are held on scheduled Friday evenings in the summer at the Hidden Valley Observatory starting at dusk unless the sky is cloudy but normally not if the moon is too near to being full.  There is no charge for these public events, but donations are welcome.

All observing sessions are always contingent on the weather.  Click on the following link to check seeing conditions for the next 30 hours or so: Hidden Valley Observatory "Clear Sky Clock"

For directions to the Hidden Valley Observatory click here.

For more information on our workshops, and observing session etiquette click here.

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