Kalamazoo Astronomical Society

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Kalamazoo Astronomical Society Official page for the
Kalamazoo Astronomical Society

The Kalamazoo Astronomical Society is the oldest organization of its kind in Michigan and one of the largest. Its purpose is to promote the exchange of information among those with a common interest in all areas of astronomy, to educate the public about astronomical discoveries and events and to cooperate with other amateur and professional astronomical organizations.

Tonight's observing event with the Southwest Michigan Land Conservancy has been canceled because of inclement weather. W...
10/10/2026

Tonight's observing event with the Southwest Michigan Land Conservancy has been canceled because of inclement weather. We look forward to planning another event with them in the future.

A 25-day-old waning crescent Moon will occult (totally block) Jupiter and its Galilean moons tomorrow morning, October 6...
10/05/2026

A 25-day-old waning crescent Moon will occult (totally block) Jupiter and its Galilean moons tomorrow morning, October 6th. The occultation begins at 4:22:51 am EDT. It takes the Moon 66 seconds to completely cover the gas giant planet.

Jupiter will dramatically begin to reappear behind the unilluminated portion of the Moon at 5:18:31 am. The occultation ends at 5:19:42 am. You can view the occultation with the unaided eye, binoculars, or a telescope.

The next Jupiter occultation will not occur until September 28, 2034.

Tonight's Public Observing Session at the Kalamazoo Nature Center is ON! Gates open at 7pm. Highlights include Saturn an...
10/03/2026

Tonight's Public Observing Session at the Kalamazoo Nature Center is ON! Gates open at 7pm. Highlights include Saturn and The Great Square. Saturn is at opposition tonight, so its rings will be at their absolute brightest. Never seen the rings for yourself? Tonight's your best chance. Join us! https://www.kasonline.org/observing.html

KAS DOUBLE HEADER!Please join us TONIGHT—Friday, October 2nd, at 7pm EDT—for Astrophotography Night. Nine KAS astrophoto...
10/02/2026

KAS DOUBLE HEADER!

Please join us TONIGHT—Friday, October 2nd, at 7pm EDT—for Astrophotography Night. Nine KAS astrophotographers are excited to share their passion for capturing the beauty of the night sky, and we encourage you to come out and show your support. Learn more on our schedule page at https://www.kasonline.org/schedule.html.

The forecast for the October 3rd Public Observing Session looks excellent! Gates open at 7pm. Highlights include Saturn & The Great Square. Saturn is at opposition, so this is absolutely the best time to see Saturn's rings, especially if you've never seen Saturn through a telescope before. Learn more at https://www.kasonline.org/observing.html.

Another season of Online Viewing Sessions featuring the KAS Remote Telescope starts on November 7th. Register now to joi...
09/21/2026

Another season of Online Viewing Sessions featuring the KAS Remote Telescope starts on November 7th. Register now to join us virtually under the dark, desert skies of southeastern Arizona. For full details, visit https://www.kasonline.org/viewing.html.

The Public Observing Session for September 19th has been CANCELED due to inclement weather conditions. Our next attempt ...
09/19/2026

The Public Observing Session for September 19th has been CANCELED due to inclement weather conditions. Our next attempt is on October 3rd. For more information, visit https://www.kasonline.org/observing.html.

Our summer hiatus is over! You are invited to join us at the Kalamazoo Area Math & Science Center (or on Zoom) this Frid...
09/10/2026

Our summer hiatus is over! You are invited to join us at the Kalamazoo Area Math & Science Center (or on Zoom) this Friday, September 11th, at 7:00 pm EDT for our monthly general meeting. Professor Evan Kirby, an associate professor in the Department of Physics & Astronomy at the University of Notre Dame, will be our special guest speaker. Professor Kirby will present "Extragalactic Archaeology." Learn more at https://www.kasonline.org/schedule.html.

Skies are expected to start clearing after sunset, so tonight's Public Observing Session at the Kalamazoo Nature Center ...
09/05/2026

Skies are expected to start clearing after sunset, so tonight's Public Observing Session at the Kalamazoo Nature Center is ON! Gates will open at 8:00 pm. Tonight's highlights include deep-sky objects in and around the Summer Triangle, which is an asterism made up of the bright stars Vega, Deneb, and Altair. For more details, visit https://www.kasonline.org/observing.html.

The next total lunar eclipse visible from Michigan will occur on June 25/26, 2029. This event is certainly worth waiting...
08/29/2026

The next total lunar eclipse visible from Michigan will occur on June 25/26, 2029. This event is certainly worth waiting for, though. Typically, during a total lunar eclipse, the full Moon only grazes the edge of the umbra, which results in either the northern or southern part of the Moon appearing brighter. However, as illustrated in the diagram below, the Moon will be plunged deep in the umbra in 2029. This positioning will likely make it one of the darkest lunar eclipses in recent memory. Hopefully, the skies will be clear!

We hope everyone had the chance to enjoy last night's Partial Lunar Eclipse. Several members of KAS gathered at Richland...
08/28/2026

We hope everyone had the chance to enjoy last night's Partial Lunar Eclipse. Several members of KAS gathered at Richland Township Park to witness the event under crystal-clear skies.

If you missed it, here's a photograph taken by KAS President Richard Bell right at the peak of the eclipse, at 12:12 am EDT. The equipment used for this shot included a Stellarvue 130mm refractor and a Canon EOS R5 camera mounted on an Astro-Physics Mach1GTO. The image is a 4-second exposure at ISO 100.

If you witnessed or captured images of the eclipse, we encourage you to share your experiences and findings with us!

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