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12 August

Perseid Meteor Shower Watch 2023 (SOLD OUT)

Come watch the Perseids, one of the best meteor showers of the year, on the open field beside the Rouge Valley Conservation Centre.
6 December

Recreational Astronomy Night - Dec. 6, 2023 ON-LINE 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 November

Recreational Astronomy Night - Nov. 1, 2023

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.
4 October

Recreational Astronomy Night - Oct. 4, 2023

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.
6 September

Recreational Astronomy Night - Sep. 6, 2023

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.
25 July

RASCTO Backyard Astronomy at Richmond Hill Public Library

Have you ever looked up at the night sky and wondered what's out there?
22 July

RASCTO Sun Fun at Richmond Hill Public Library

Summer is time for fun in the sun, but what do you really know about our nearest star?
26 August

DDO Planetarium Day - August 2023

Visitors aged 6 and older will enter a Digital Portable Planetarium and take a journey through the universe led by a DDO astronomer.
22 July

DDO Planetarium Day - July 2023

Visitors aged 6 and older will enter a Digital Portable Planetarium and take a journey through the universe led by a DDO astronomer.
29 July

Astronomy Speaker's Night: Taking Back the Night Sky: What We Can Do About Light Pollution (CANCELLED)

Abstract: In this talk, Quinton Weyrich will discuss his experience as an Astronomer in Residence at Killarney Provincial Park, the first provincial park in Ontario to be designated a dark sky preserve. He will discuss what commitments a location must make in order to be designated a dark sky preserve and why the reduction of ambient light within them is scientifically and culturally valuable.