Canada-wide Astronomy Buy & Sell Canadian Space Guide Hamilton Amateur Astronomers North Shore Erie Amateur Astronomers Royal Astronomical Society of Canada South Simcoe Amateur Astronomers University of Toronto Astronomy Department York University Astronomy Club PHOTON (Light Pollution)
AAVSO IOTA The Planetary Society Sky Publishing
Don Machholz's Comet Comments Centre for Backyard Astrophysics Star Hill Inn The ATM Page
Orbital Elements (Comets)
Pin Chung Doug Clapp John Clemmer Danny Driscoll Dennis Gasparotto Kim Hay Mark Kaye Walter MacDonald John Shepherd Peter Tattersall Mark Turner
