St. Thomas Observatory


If you are a student in PHYS 104 (Astronomy),

please refer to your class web page instead of this page.


Our next event on 10/18 for Academic Success Week is a go!

Our event for Cretin-Derham has been moved to 10/24 at 7:15pm.


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Predicted Sky Conditions

(Click a square on the chart next to Cloud Cover to see a predictive cloud map.)


Current Satellite Animation


General Weather Conditions

(To show cloud cover on graph, click on 10-Day and then Customize.)


Sky Map: What Can We See This Month?

(Scroll half way down page for pdf download.)


St. Paul Campus Map

(We are located on top of the Anderson Parking Facility.)


Upcoming Events


Date Time Description

10/18/17 8:00 - 10:00 pm

Private St. Thomas event: Academic Success Week. Students who attend Dr. Tom Hickson's talk in the 3M Auditorium are welcome to join us afterward at the Observatory. We'll give tours of the large telescope and set up several small telescopes for you to look through.

10/24/17 7:15 pm

Private event for students of Cretin-Derham: Astronomy presentation followed by a tour of the observatory and use of several smaller telescopes. (Backup date in case of clouds: 10/26)

11/3/17 8:00 - 11:00 pm

Event for all St. Thomas students taking physics classes (and friends): Halloween Star Party. We'll show a movie on the big screen next to the observatory and serve candy, popcorn, hot chocolate, and cider. Take a tour of the big, robotic telescope and look through several smaller telescopes. Last year we had 100 attendees!

In case of clouds, we'll find a backup date. Keep posted for updates.



Adam Green, Programming Director, 651-962-5289,

Gerry Ruch, Technical Director, 651-962-5207,

Rich Schuler, Physics Laboratory Manager, 651-962-5218,


Past Events

10/6/17 9:00 - 11:00 pm

Event for families of St. Thomas students: Family Weekend. Join us for an evening of astronomy. This event will begin with a short presentation on an exciting astronomy topic followed by a tour of our state of the art observatory. Special viewing through our fleet of small telescopes. Enjoy popcorn and hot chocolate with staff and students.


Backup plan: If the sky is cloudy but not rainy, we'll still meet at the observatory for a talk, a movie, and tours of the big telescope. If it rains, we'll have the talk and movie in the 3M Auditorium in Owens Science Hall at 9pm.

9/13/17 8:30 pm

Private training session for observatory assistants

9/12/17 8:30 pm

Private training session for observatory assistants

9/9/17 9:00 - 11:00 pm

Private St. Thomas event: Optional laboratory session for PHYS 347 students. Learn how to operate the small telescopes.