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19 September

City Star Party: Long Branch Park - NO GO for Tonight - Explore the Moon - September 19, 2026

Join us at the lake This is your chance to learn about moon features, hone observing skills and maybe even earn a RASC Explore the Moon - Binocular or RASC Explore the Moon - Telescope certificate!
19 September

Millennium Square Public Star Party - September 18 or 19, 2026 (NO-GO for Saturday)

Join us for an evening of free public stargazing along the north shore of Lake Ontario at Millennium Square.
16 September

RASC Speaker Night and Member Awards Presentation (Simulcast)

Speaker's Night - Radio astronomy in the land ‘down under’ Join us for another in-person simulcast of our Speaker's Night with Dr Karen Lee-Waddell who is a Project Scientist for WALLABY, an all-sky survey that aims to detect and image the gas distribution in hundreds of thousands of galaxies using CSIRO’s ASKAP telescope. An alumnus of Queen's and McMaster University, she has been living and working in Australia since 2015.
14 September

City Star Party: Bayview Village Park - September 2026 (GO for Monday)

Our monthly City Star Party is the place to catch universe from within the city limits at Bayview Village Park. If you don't have a telescope then you will find many astronomers who would love to share a view.
12 September

RHDDO Astronomy Family Night - September 2026 - The Equinox Approaches

Families will see a presentation on a variety of exciting astronomy topics, followed by age-appropriate celestial activities.
2 September

Recreational Astronomy Night - September 2, 2026 [ONLINE ONLY]

Join us for our monthly recreational astronomy night meeting. This is where our members get to show their latest projects or give tutorials and tips on just about everything to do with astronomy.
1 September

RHDDO Stargazing Night - August 2026 (GO for Tuesday, But Watch Weather)

Bring your own binoculars for a free, guided tour of the night sky.
30 August

RHDDO: Sunday Sungazing - August 2026

Safely observe the sun with us! During these family-friendly sessions, a RHDDO Astronomer will answer your questions about our closest star: the sun!
29 August

RHDDO Tom Talks Astronomy - August 2026: "Expedition to the Bizarre and Extreme Cosmos!"

Join us for a family-friendly, multimedia talk hosted by TEDx speaker Tom Vassos!
29 August

RHDDO How to Use Your Telescope for RASCTO - August 2026

Are you a RASC member with a telescope, and you want some tips on how to use it?
29 August

AICO Astro Fair 2026

Join us for a fair of astronomical proportions at York University with the Allan I Carswell Observatory and our event partners.
22 August

City Star Party: Long Branch Park - Explore the Moon - NO GO August 2026

Another weather system is raining us out for the August weekend. Better luck in September! Join us at the lake This is your chance to learn about moon features, hone observing skills and maybe even earn a RASC Explore the Moon - Binocular or RASC Explore the Moon - Telescope certificate!