showed Castor at 1000x (Richmond Hill)

A guides group booked an event at the David Dunlap Observatory. I was the telescope operator hired gun. Amazingly the skies turned as I rode the GO train into Richmond Hill. So I opened the big dome and turned the 1.88 metre telescope to Castor. We could see the brilliant A and B stars and we easily tagged the C companion. I was aided by Kersti, Ron, Julia, Rohan, Celia, and keener Matt. Humid.