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Welcome to the Big Sky Astronomy Club

The Big Sky Astronomy Club is a group of dedicated amateur astronomers located in the beautiful Flathead Valley of Northwestern Montana.

Inside you will find information about our club, our monthly meetings, Star Parties and other events (both past and future), resources for observing plus

a poignant and special message from the late Dr. Carl Sagan.


We cordially invite you to

"Discover the Universe with The Big Sky Astronomy Club"

2018 Astronomy Day Event

April 21, 2018

Internation Astronomy Day is a grass-roots, world-wide event observed each spring and fall. The basice theme of Astronomy Day is "Bringing Astronomy to the People". Astronomy Day 2018 will be celebrated on April 21.

The Big Sky Astronomy Club is a strong believer in the broad goal of "Bringing Astronomy to the People". Consequently, we are planning an exciting Astronomy Day event at Kalispell Center Mall on Saturday, April 21st.

The event will be located in the court at the west (Herberger's) end of the mall and will run from 10 A.M. to 4 P.M.

There will be many astronomy-related activities for visitors of all ages, including solar viewing through club members' scopes, a telescope display at our tables, and many theme-related, solar eclipse informational displays.

2018 Lone Pine Star Party

Date to be determined.

Montana State Parks Logo

The Big Sky Astronomy Club, in conjunction with the wonderful people at Lone Pine State Park will once again be hosting a public star party at the Visitors' Center at the park. The date for this year's event has yet to be finalized but, as soon as we estabilsh it, it will appear here and on our Event Calendar, so check back often.

2018 Logan Pass Star Parties

August & September 2018

National Park Service Logo

The Big Sky Astronomy Club, in conjunction with Glacier National Park, will once again host three star parties this summer under extremely dark skies at the Logan Pass Visitors' Center parking lot at the summit of Going-To-The-Sun-Road.

The events are extremely popular, with attendance at each event approaching four or five hundred visitors. The 2017 dates for these fun events will be August 10, August 17 and September 7. These dates are also listed on our Meetings and Events Calendar. The events will be held on Fridays, with the following day (Saturday) reserved as a backup in case of inclement weather on the primary date. Tickets for each event will be available through Glacier National Park. Contact Park Headquarters (406-888-7800) for more information.

2018 Montana Starwatch

Dates to be determined.

Ruby Valley, Montana

The Big Sky Astronomy Club will host our sixth annual state-wide star party, Montana Starwatch this summer on private property near Twin Bridges, Montana. The property is owned by BSAC club member Joe Witherspoon. This will be the seventh year that the star party has been held at this wonderful, dark sky site.

We are planning two great presentations on the Friday and Saturday nights of the star party.

For more information, including a registration form for the event, please see the official Montana Starwatch website at: montanastarwatch.org.

2018 G.N.P. Summer Stargazing

Summer Season, 2018

See The Milky Way Poster

The Big Sky Astronomy Club will once again work with the management of Glacier National Park to put on a very popular Summer Stargazing Program at the Apgar Transit Center on the west side of the park and at St. Mary on the east side. Over the past five years, literally thousands of visitors from all over the world have had a chance to view sunspots on the face of our Sun during daylight hours and then, each evening, they have had an opportunity to view many of the interesting deep sky objects visible through telescopes of various types and sizes under the truly dark skies found in Glacier.

If you'd like more information on this program, please contact Park Headquartes at 406-888-7800 or visit our "Contact Us" page and send us a message.

BSAC Missoulian Article

November 14, 2013

Big Sky Astronomy Club member Joe Witherspoon and his personal observatory located outside of Twin Bridges, Montana, were featured in a very nice article published in the Missoulian newspaper on Thursday, November 14th, 2013.

The in-depth article described Joe's interest in astronomy, his personal observatory and what prompted his eventual move to Twin Bridges, having lived in the light pollution of Tacoma, Washington for many years.

The article can be read online at the Missoulian's website by clicking here.

BSAC Daily Inter Lake Article

September 4, 2013

The Big Sky Astronomy Club was featured in a very nice article published in Kalispell's Daily InterLake newspaper on Wednesday, September 4th, 2013.

The article described our history, our many outreach efforts along with our plans to build an observatory/education center and purchase a portable planetarium for use in our educational outreach.

The article can be read online at the Daily Inter Lake's website by clicking here.

Logan Pass Star Party 07-29-16