WASHINGTON Battle Point Astronomical Association Boeing Employee's Astronomical Society Everett Astronomical Society Olympic Astronomical Society Seattle Astronomical Society Spokane Astronomical Society Tacoma Astronomical Society Whatcom Association of Celestial Observers Yakima Valley Astronomy Club OREGON Eugene Astronomical Society Northwest Astronomy Group Night Sky 45 Astronomy Club Rose City Astronomers Southern Oregon Skywatchers Umpqua Amateur Astronomers IDAHO Boise Astronomical Society Idaho Falls Astronomical Society Magic Valley Astronomical Society BRITISH COLUMBIA Fraser Valley Astronomers Society RASC -- Prince George Centre RASC -- Okanagan Centre RASC -- Victoria Centre