7:30 pm Ticket
Free
This Ticket is for the 7:30 pm arrival slot. Please note that to attend this observatory tour you will need to go to the 3rd floor of the Petrie Science and Engineering building. Unfortunately these tours are not handicap accessible. Make sure to bring outdoor shoes and jackets if the weather is cool as the domes will be close to outdoor temperatures.

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7:45 pm Ticket
Free
This Ticket is for the 7:45 pm arrival slot. Please note that to attend this observatory tour you will need to go to the 3rd floor of the Petrie Science and Engineering building. Unfortunately these tours are not handicap accessible. Make sure to bring outdoor shoes and jackets if the weather is cool as the domes will be close to outdoor temperatures.

More

8:00 pm Ticket
Free
This Ticket is for the 8:00 pm arrival slot. Please note that to attend this observatory tour you will need to go to the 3rd floor of the Petrie Science and Engineering building. Unfortunately these tours are not handicap accessible. Make sure to bring outdoor shoes and jackets if the weather is cool as the domes will be close to outdoor temperatures.

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8:15 pm Ticket
Free
This Ticket is for the 8:15 pm arrival slot. Please note that to attend this observatory tour you will need to go to the 3rd floor of the Petrie Science and Engineering building. Unfortunately these tours are not handicap accessible. Make sure to bring outdoor shoes and jackets if the weather is cool as the domes will be close to outdoor temperatures.

More

8:30 pm Ticket
Free
This Ticket is for the 8:30 pm arrival slot. Please note that to attend this observatory tour you will need to go to the 3rd floor of the Petrie Science and Engineering building. Unfortunately these tours are not handicap accessible. Make sure to bring outdoor shoes and jackets if the weather is cool as the domes will be close to outdoor temperatures.

More

8:45 pm Ticket
Free
This Ticket is for the 8:45 pm arrival slot. Please note that to attend this observatory tour you will need to go to the 3rd floor of the Petrie Science and Engineering building. Unfortunately these tours are not handicap accessible. Make sure to bring outdoor shoes and jackets if the weather is cool as the domes will be close to outdoor temperatures.

More

9:00 pm Ticket
Free
This Ticket is for the 9:00pm arrival slot. Please note that to attend this observatory tour you will need to go to the 3rd floor of the Petrie Science and Engineering building. Unfortunately these tours are not handicap accessible. Make sure to bring outdoor shoes and jackets if the weather is cool as the domes will be close to outdoor temperatures.

More

9:15 pm Ticket
Free
This Ticket is for the 9:15 pm arrival slot. Please note that to attend this observatory tour you will need to go to the 3rd floor of the Petrie Science and Engineering building. Unfortunately these tours are not handicap accessible. Make sure to bring outdoor shoes and jackets if the weather is cool as the domes will be close to outdoor temperatures.

More

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Allan I. Carswell Observatory, Tour, March 12th, 2025

Event closed

Petrie Science & Engineering

North York, ON M3J 1P3, Canada

Welcome to the York University Allan I Carswell Astronomical Observatory!

We are running regular in person shows every Wednesday. These sessions will go ahead regardless of weather conditions.  Guests will be shown into the 1-m as well as our 60-cm domes from the inside. However, we will not be able to open the domes under rain and/or overcast conditions. 

The location is 'York University Petrie Science and Engineering' building and is given in the event. To enter the observatory go to the Petrie Science and Engineering building and go up to the 3rd floor. You will then just follow the signs for the 'Observatory' and your tour guide will meet you at the main door. Please keep in mind only one ticket booking per person is currently allowed. 

Our regular online public viewing will continue every Monday evening from 9-10pm ET, with audio from York Universe podcast and broadcasting at:  https://www.youtube.com/user/YorkUObservatory/live

On the final Friday of every month, we will be broadcasting live imaging on YouTube from 7:30pm ET on our TeleTube broadcast at: https://www.youtube.com/user/YorkUObservatory/live

For weather updates and all information see our website at https://yorku.ca/science/observatory 

You can also email us at observe@yorku.ca! Happy viewing, hope to see you all either online or at one of our in person events.