A telescope in the foreground points towards a distant city skyline across a body of water under a soft, colorful sunset sky.

Allan I Carswell Observatory

LXCL:7:30PM Ticket. Make sure to bring your ticket to go on the tour. Keep in mind the event is WEATHER DEPENDANT! Note: This Tour is at the Arboretum Parking Garage Rooftop and NOT in the Observatory (Petrie Building)

7:30 PM Ticket

LXCL:7:45PM Ticket. Make sure to bring your ticket to go on the tour. Keep in mind the event is WEATHER DEPENDANT! Note: This Tour is at the Arboretum Parking Garage Rooftop and NOT in the Observatory (Petrie Building)

7:45 PM Ticket

LXCL:8:00PM Ticket. Make sure to bring your ticket to go on the tour. Keep in mind the event is WEATHER DEPENDANT! Note: This Tour is at the Arboretum Parking Garage Rooftop and NOT in the Observatory (Petrie Building)

8:00 PM Ticket

LXCL:8:15PM Ticket. Make sure to bring your ticket to go on the tour. Keep in mind the event is WEATHER DEPENDANT! Note: This Tour is at the Arboretum Parking Garage Rooftop and NOT in the Observatory (Petrie Building)

8:15 PM Ticket

LXCL:8:30PM Ticket. Make sure to bring your ticket to go on the tour. Keep in mind the event is WEATHER DEPENDANT! Note: This Tour is at the Arboretum Parking Garage Rooftop and NOT in the Observatory (Petrie Building)

8:30 PM Ticket

LXCL:8:45PM Ticket. Make sure to bring your ticket to go on the tour. Keep in mind the event is WEATHER DEPENDANT! Note: This Tour is at the Arboretum Parking Garage Rooftop and NOT in the Observatory (Petrie Building)

8:45 PM Ticket

LXCL:9:00PM Ticket. Make sure to bring your ticket to go on the tour. Keep in mind the event is WEATHER DEPENDANT! Note: This Tour is at the Arboretum Parking Garage Rooftop and NOT in the Observatory (Petrie Building)

9:00 PM Ticket

Welcome to the York University Arboretum Astronomy Tour Outdoors! This week the Allan I Carswell Observatory is running our outdoor&nbsp;Arboretum tours. Events are all-ages. These sessions will only go ahead if the weather is CLEAR. Masks are recommended.The location is the &#39;Arboretum Lane Parking Garage&#39; just across from the &#39;York University Petrie Science and Engineering&#39; building at York University. To enter the observatory atrium go to the top level of the parking garage and look for the wire enclosure with the telescopes. Please keep in mind only one ticket booking per person is currently allowed. We do not have in-person tickets. We will be hosting our free in-person tours every Wednesday (except some holidays). For more info, please visit our website: <a fr-original-style="" href="https://www.yorku.ca/science/observatory/" style="text-decoration-color: currentcolor; user-select: auto; box-sizing: inherit;" target="_blank">https://www.yorku.ca/science/observatory/</a> Our online events include, our regular online public viewing (OPV) every Monday evening from 9-10pm ET, (with audio from the York Universe) and; our Teletube broadcast on the last Friday of every month from 7:30pm ET on: <a fr-original-style="" href="https://www.youtube.com/user/YorkUObservatory/live" style="text-decoration-color: currentcolor; user-select: auto; box-sizing: inherit;" target="_blank">https://www.youtube.com/user/YorkUObservatory/live</a>&nbsp; For weather updates and all information see our website at <a fr-original-style="" href="https://www.yorku.ca/science/observatory/" style="text-decoration-color: currentcolor; user-select: auto; box-sizing: inherit;" target="_blank">https://www.yorku.ca/science/observatory/</a>&nbsp; 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.

Hello <span contenteditable="false" data-custom-variable="{{firstname}}" fr-original-class="fr-deletable styled-tag-chip " fr-original-style="" style="background-color: rgb(248, 248, 255); border: 1px solid rgb(191, 191, 255); border-radius: 4px; color: rgb(42, 42, 196); padding: 1px 8px; font-size: 11px; display: inline-block; margin: 0px; overflow-wrap: anywhere; user-select: none; box-sizing: inherit;">First name <span contenteditable="false" data-custom-variable="{{lastname}}" fr-original-class="fr-deletable styled-tag-chip " fr-original-style="" style="background-color: rgb(248, 248, 255); border: 1px solid rgb(191, 191, 255); border-radius: 4px; color: rgb(42, 42, 196); padding: 1px 8px; font-size: 11px; display: inline-block; margin: 0px; overflow-wrap: anywhere; user-select: none; box-sizing: inherit;">Last name, Thank you for choosing a tour at the Allan I Carswell Observatory. We look forward to welcoming you to the Atrium. Please keep in mind that there are TWO different locations (the Atrium and the Observatory) for our tours so read your event description map to make sure you arrive at the correct location. This tour is an Atrium Tour. You will need to go to top level of the Arboretum Lane parking garage and look for the wire enclosure with the telescopes. You can find us at: &nbsp; 📭 &nbsp; at our arboretum location. Please make sure to remember that this is a weather dependent event, &nbsp;if it is rainy/cloudy the event will not go ahead.⌚ &nbsp; On <span contenteditable="false" data-custom-variable="{{date-variable-42066294-53ee-4c65-a89f-c35e118d8007}}" fr-original-class="fr-deletable styled-tag-chip " fr-original-style="" style="background-color: rgb(248, 248, 255); border: 1px solid rgb(191, 191, 255); border-radius: 4px; color: rgb(42, 42, 196); padding: 1px 8px; font-size: 11px; display: inline-block; margin: 0px; overflow-wrap: anywhere; user-select: none; box-sizing: inherit;">Date As a reminder, it is also recommended that you wear practical shoes and consider bringing a red flashlight for navigation especially on Atrium location tours as the ground may be uneven and lighting will be dim/dark. <a fr-original-style="text-decoration-color:initial;user-select:auto;box-sizing:inherit;" href="https://giving.yorku.ca/Observatory" rel="noopener noreferrer" style="text-decoration-color:initial;user-select:auto;box-sizing:inherit;" target="_blank">If you enjoy these free tours please consider donating to the observatory so that we can keep them running!</a> Kind regards. Allan I Carswell Observatory Crew

Welcome to the York University Arboretum Astronomy Tour Outdoors! This week the Allan I Carswell Observatory is running our outdoor Arboretum tours. Events are all-ages. These sessions will only go ahead if the weather is CLEAR. Masks are recommended.The location is the 'Arboretum Lane Parking Garage' just across from the 'York University Petrie Science and Engineering' building at York University. To enter the observatory atrium go to the top level of the parking garage and look for the wire enclosure with the telescopes. Please keep in mind only one ticket booking per person is currently allowed. We do not have in-person tickets. We will be hosting our free in-person tours every Wednesday (except some holidays). For more info, please visit our website: <a href="https://www.yorku.ca/science/observatory/" target="_blank">https://www.yorku.ca/science/observatory/</a> Our online events include, our regular online public viewing (OPV) every Monday evening from 9-10pm ET, (with audio from the York Universe) and; our Teletube broadcast on the last Friday of every month from 7:30pm ET on: <a href="https://www.youtube.com/user/YorkUObservatory/live" target="_blank">https://www.youtube.com/user/YorkUObservatory/live</a>  For weather updates and all information see our website at <a href="https://www.yorku.ca/science/observatory/" target="_blank">https://www.yorku.ca/science/observatory/</a>  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.

Allan I Carswell Observatory

Allan I. Carswell Atrium Tour, September 23rd 2026

Arboretum Parking Garage

7:30 PM Ticket

Free

7:45 PM Ticket

Free

8:00 PM Ticket

Free

8:15 PM Ticket

Free

8:30 PM Ticket

Free

8:45 PM Ticket

Free

9:00 PM Ticket

Free