Welcome to the Rochester Astronomy Club

Rochester, Minnesota


Please check out our calender of public Night Sky Viewing Events.

All are welcome!

*** The Public Observing Event scheduled for 12/14 at Watson Soccer Fields is cancelled due to snow at parking ***


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Cometary indulgement by end of 2018

Updated 12/10,11/17. About four years ago we could observe by naked eye comet C/2014 Q2 (Lovejoy). This year in December, we expect to see periodic comet 46P/Wirtanen. Now, we have actually chance to see two comets! Comet 46P/Wirtanen has period 5.44 years. This year it will be as close as just 0.08 AU from the Earth, and it could be […]
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What to expect at RAC Night Sky Viewing Events

The RAC hosts regular Night Sky Viewing and Dark Sky Viewing events. If you are new to astronomy or new to the club, these events may be new for you as well. Knowing what to expect might make the events easier to navigate and more enjoyable. The observing events typically take place in a public location, after dark. Club members […]
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Getting Connected with RAC!

The Rochester Astronomy Club is always looking to connect with our community and encourages anyone that is interested in astronomy to attend our events. We have monthly meetings that are open to the public with interesting and informative presentations. Additionally, we have regular public observing events where club members set up telescopes and share viewing experiences with anyone that has […]
Comet 21P/Giacobini-Zinner
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Comet 21P/Giacobini-Zinner

Would you like to see a comet? Now, in September 2018 is pretty good chance to see comet 21P/Giacobini-Zinner by small telescope or even by binocular. Periodic comet 21P can be seen in in September the second part of the night. Below is path map till beginning of the October. About 2 AM is already high enough above horizon, and can […]
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The 32nd Annual Okie-Tex Star Party is September 12 – 20, 2015.

by Dean Johnson Go to http://www.okie-tex.com/ for more information. Last September five of us from the Rochester Astronomy Club traveled to the Okie-Tex Star Party, one of the biggest in the nation and we did it in style. Club President Randy Hemann lined up a very nice RV that his neighbor generously donated for a small fee and Vice President […]
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Humanity Star

On January 21, 2018 rocket Electron on it’s second test launch from New Zealand successfully reached orbit. One of the payload was satellite Humanity star, which should be visible on the sky for less than a year. Wikipedia says: Humanity Star is a passive satellite, a geodesic sphere similar to a disco ball about 1 metre (3 ft) in diameter, […]
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Reflections on Star B-Q 2014

Published at http://rochesterskies.org/aNew/newsletter/rac-newsletter-2015-q1.pdf by Josef Chlachula On Saturday, October 25, 2014, it was a beautiful day in Rochester; quite warm with an azure blue sky. It was a perfect day for garden work in a T-shirt. That afternoon I decided that I would spend the upcoming night at a Star B-Q. If I understand it correctly, it was already the […]

Submitted Photos