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National/International
American Assn. of Variable Star ObserversAmerican Association of Amateur AstronomersAmerican Lunar SocietyAmerican Meteor Society, Ltd.Antique Telescope SocietyAssociation of Lunar and Planetary ObserversAstronomical LeagueAstronomical Society of the PacificASTRONOMO.org Foro Astronomía ObservacionalAstronomy Day HeadquartersInternational Association for Astronomical StudiesInternational Astronomical UnionInternational Dark-Sky AssociationInternational Meteor OrganizationInternational Occultation Timing AssociationNight Skies NetworkNorth American Meteor NetworkOregon Star PartyRTMC Astronomy ExpoSociety of Amateur Radio AstronomersStellafaneTexas Star PartyThe Royal Astronomical Society of Canada (RASC)The SETI League, Inc.The Sidewalk AstronomersVisual Satellite ObserversWestern Amateur Astronomers
USA

Alabama

Auburn Astronomical SocietyBirmingham Astronomical SocietyMobile Astronomical SocietyN.E.R.D.S.Shoals Astronomy ClubThe Astronomical Society of TuscaloosaUNA Astronomy ClubVon Braun Astronomical Society
Alaska

Alaskan Astronomy GroupChugach Stargazer SocietyDubai seo servicesFairbanks Astronomical Unit
Arizona

Astronomers of Verde ValleyAstronomical Society of the Grand CanyonAstronomy Club AZAstronomy Club of Sun City WestAstronomy Club of VerradoCoconino Astronomical SocietyDesert Foothills Astronomy ClubDesert Skygazer Astronomy ClubEast Valley Astronomy ClubHeber-Overgaard Astronomy ClubHigh Desert Astronomy ClubHuachuca Astronomy ClubLake Havasu Astronomy Club Phoenix Astronomical SocietyPrescott Astronomy ClubRim Astronomy clubSaguaro Astronomy ClubSirius Lookers of SedonaSonora Astronomical Society (SAS)Star ClubSun City Astronomy ClubTucson Amateur Astronomy Assn.University of Arizona Astronomy ClubWest Valley Astronomy ClubWhite Mountains Astronomy ClubYuma Astronomy Club
Arkansas

Arkansas-Oklahoma Astronomical SocietyAstronomical Society of Northwest ArkansasCentral Arkansas Astronomical SocietyChristian Association of Stellar ExplorersHot Springs Village Star GazersNortheast Arkansas Sky CrewOzark StargazersRed River Astronomy CLubRiver Valley StargazersSugar Creek Astronomical Societytesttest2
California

Antelope Valley Astronomy Club, IncArcata Society for Amateur AstronomersAstronomers of HumboldtAstronomical Association of Northern CaliforniaAstronomical Society of the Central CoastAstronomical Society of the DesertAstronomy Club of the U C DavisBig Bear Valley Astronomical SocietyCabrillo Astronomy ClubCaltech SEDSCCFF Astronomy ClubCelestial ObserversCentral Coast Astronomical SocietyCentral Valley Astronomers, Inc.Chabot Telescope Makers WorkshopChina Lake Astronomical SocietyClear NightsColorado River Astronomy ClubDavis Astronomy ClubEastbay Astronomical SocietyExcelsior Telescope ClubFirstLight Astronomy ClubFremont Peak Observatory AssociationGolfing Astronomer Musician's AssociationGreat Valley Astronomy ClubGreater Tehachapi Astronomy ClubGroup 70 -- Large Amateur Telescope ProjectHalls Valley Astronomical GroupHercules StargazersHigh Desert Astronomical SocietyIdyll-Gazers Amateur Astronomy ClubKern Astronomical Society, Inc.Kern River Valley Astronomy ClubLake Tahoe AstronomersLocal Group Astronomy ClubLong Beach Astronomical SocityLos Angeles Astronomical SocietyLos Angeles Valley College Astronomy GroupM-STAR Astronomy ClubManteca Observer's GroupMarin StargazersMerced Society for Telescope & Astronomy RecMIRA Observers GroupMount Diablo Astronomical SocietyMount Diablo Observatory AssociationMount Wilson Observatory Assn.Mountain Skies Astronomical SocietyMt Shasta Star GazersNot When the Surf's Up Amateur Astronomers GroupOceanside Photo & Telescope Astronomical SocietyOld Town Sidewalk AstronomersOne club that requests to be unlistedOne club that requests to be unlistedOrange County AstronomersPeninsula Astronomical SocietyPolaris Observatory Association Inc.Pomona Valley Amateur AstronomersRio Hondo Astronomical SocietyRiverside Astronomical SocietySacramento Valley Astronomical SocietySan Bernardino Valley Amateur AstronomersSan Diego Astronomy AssociationSan Francisco Amateur AstronomersSan Francisco Sidewalk AstronomersSan Jose Astronomical AssociationSan Mateo County Astronomical SocietySanta Barbara Astronomical UnitSanta Cruz Astronomy ClubSanta Monica Amateur Astronomy ClubSchwartz Astronomical SocietyShasta Astronomy ClubSherman Oaks Astronomers GroupSidewalk Astronomers of SacramentoSonoma County Astronomical SocietySouth Bay Astronomical SocietySouthern California Desert Video AstronomersSouthern California ObserversStanislaus Amateur AstronomersStockton Astronomical SocietyStony Ridge Observatory, Inc.Students Taking Astronomy-Related SubjectsSun City Palm Desert Astronomy ClubTamalpais Astronomical SocietyTemecula Valley AstronomersThe Andromeda SocietyThe Astronomy ConnectionThe Astronomy ForumThe George H. Lutz Observatory (Astronomy Club)Tri-Valley StargazersTulare Astronomical AssociationTule River Amateur AstronomersUkiah Astronomical SocietyValley of the Moon Astronomical SocietyVandenberg Amateur Astronomical SocietyVentura County Astronomical SocietyWestern Observatory Astronomy SocietyWhite Mountain Astronomers
Central

Celestial Observers Guild
Colorado

Arkansas Valley Astronomical SocietyBlack Canyon Astronomical SocietyBoulder Astronomy & Space SocietyColorado Astronomy & Space Research OrganizationColorado Springs Astronomical SocietyDenver Astronomical SocietyFour Corners StargazersGunnison Valley Astronomical SocietyHigh Plains Astronomy ClubLongmont Astronomical SocietyNorthern Colorado Astronomical SocietyPalisade Astronomy ConnectionRocky Mountain Astronomy ClubSouthern Colorado Astronomical SocietyTamalpais Astronomical SocietyThree Rivers Astronomy ClubWestern Colorado Astronomy ClubYampa Valley Astronomy Club
Connecticut

Astronomical Society of Greater HartfordAstronomical Society of GreenwichAstronomical Society of New Haven, Inc.Boothe Memorial Astronomical SocietyFairfield County Astronomical SocietyLitchfield Hills Amateur Astronomy ClubMattatuck Astronomical SocietyThames Amateur Astronomical SocietyWestport Astronomical Society
Delaware

Delaware Astronomical SocietyDelmarva Star Gazers
District of Columbia

National Capital Astronomers
Florida

Alachua Astronomy Club, Inc.Ancient City Astronomy ClubAstro ScopersAstronomical Society of Bay CountyAstronomical Society of the Palm BeachesBelen Jesuit Prep School Astronomy ClubBrevard Astronomical SocietyCentral Florida Astronomical SocietyCosmo Astronomical SocietyCrystal River High School Astronomy ClubEscambia Amateur Astronomers Assn.Everglades Astronomical SocietyFIT Astronomy SocietyGreater Ocala Astronomy ClubHighlands StargazersIndian River Astronomical SocietyIndian River Astronomical SocietyKennedy Space Center Amateur AstronomersLemon Bay High School Astronomy ClubLocal Group of Deep Sky ObserversMARS Astronomy ClubNortheast Florida Astronomical Society, Inc.South Florida Amateur Astronomers Assn.South West Florida Astronomical SocietySouthern Cross Astronomical SocietySt. Petersburg Astronomy Club, Inc.Tallahassee Astronomical SocietyThe Villages Astronomy ClubTreasure Coast Astronomical SocietyWinter Haven Astronomy Club
Georgia

Astronomy Club of AugustaAthens Astronomical AssociationAtlanta Astronomy Club, Inc.Chattahoochee Valley Astronomical SocietyDeerlick Astronomy VillageFlint River Astronomy ClubGalloway Amateur Astronomy ClubMacon State College Astronomy ClubMiddle Georgia Astronomical SocietyNorth Georgia Astronomy ClubOglethorpe Astronomical Assn.Southern Georgia Astronomers - SGAStatesboro Astronomy Club
Hawaii

Hawaiian Astronomical SocietyKauai Educational Assn. for Science & Astronomy Maui Astronomy ClubMeteor Group Hawaii
Idaho

Boise Astronomical SocietyIdaho Falls Astronomical SocietyMagic Valley Astronomical Society
Illinois

Astronomical Association of Southern IllinoisAstronomical Society at Univ. of IllinoisChampaign-Urbana Astronomical SocietyChicago AstronomerChicago Astronomical SocietyDecatur Area Astronomy ClubFox Valley Astronomical SocietyKankakee Area StargazersLake County Astronomical SocietyNaperville Astronomical Assn.Northern Illinois StargazersNorthern Illinois University Astronomical SocietyNorthwest Suburban AstronomersPeoria Astronomical Society, Inc.Planetary Studies FoundationPopular Astronomy Club, Inc.River Bend Astronomy ClubRockford Amateur Astronomers Inc.Ryerson Astronomical SocietySangamon Astronomical SocietySkokie Valley AstronomersTwin City Amateur Astronomers, Inc.
Indiana

Astronomical Society of Hillsdale CountyCalumet Astronomical SocietyColumbus Astronomy ClubEvansville Astronomical Society, Inc.Fort Wayne Astronomical Society, Inc.Indiana Astronomical Society, Inc.Kokomo Astronomy ClubMichiana Astronomical SocietyMuncie Astronomy ClubRose-Hulman Astronomical SocietyStonebelt StargazersWabash County Astronomical SocietyWabash Valley Astronomical SocietyWarsaw Astronomical Society
Iowa

Amateur Astronomers of Central IowaAmes Area Amateur AstronomersCedar Amateur Astronomers, Inc.Cedar Valley Amateur Astronomers AssociationCentral Iowa AstronomersDes Moines Astronomical Society, Inc.Des Moines Astronomy ClubIowa City Astronomy ClubNorthwest Iowa AstronomersQuad Cities Astronomy ClubSoutheast Iowa Astronomy Club
Kansas

Astronomy Associates of LawrenceHeartland Astronomical Research TeamHigh Plains Astronomical SocietyKansas Astronomical ObserversNorth Central Kansas Astronomical SocietyNortheast Kansas Amateur Astronomers' League, Inc.Salina Astronomy Club
Kentucky

Big South Fork Star GazersBlue Grass Amateur Astronomy ClubEastern Kentucky Astronomy ConnectionLouisville Astronomical SocietyOhio Valley Astronomical SocietyWestern Kentucky Amateur Astronomers
Louisiana

Baton Rouge Astronomical Society, Inc.Pontchartrain Astronomy Society, Inc.Shreveport-Bossier Astronomical Society, Inc.
Maine

Astronomical Society of Northern New EnglandCentral Maine Astronomical SocietyDowneast Amateur Astronomy ClubPenobscot Valley Star Gazers
Maryland

Anne Arundel Assn. of Amateur AstronomersAstronomical Society of GreenbeldBaltimore Astronomical SocietyCumberland Astronomy ClubGoddard Astronomy ClubHarford County Astronomical SocietyHoward Astronomical LeagueNorthern Virginia Astronomy ClubSouthern Maryland Astronomical SocietyThe Patient AstronomerTri-State AstronomersWestminster Astronomical Society
Massachusetts

Aldrich Astronomical SocietyAmateur Telescope Makers of Boston, Inc.Amherst Astronomy Assn.Astronomical Society of Southern New EnglandBay Colony Astronomical SocietyBoston University Astronomical SocietyCape Cod Astronomical SocietyDouble Star ObserverGloucester Area Astronomy ClubMartha's Vineyard Astronomy ClubNorth Shore Amateur Astronomy ClubNorthern Berkshire Amateur Astronomy ClubPittsfield Astronomy ClubSilver Lake Regional High School Astronomy ClubSouth Shore Astronomical SocietySpringfield Stars Club
Michigan

Amateur Astronomers of JacksonAstronomical Society of Lenawee & HillsdaleCapital Area Astronomy ClubDelta Astronomical SocietyDetroit Astronomical SocietyDinosaur Hill Astro. SocietyEastern Michigan Univ. Astronomy ClubFord Amateur Astronomy ClubGeneral Motors Astronomy ClubGenesee Astronomical SocietyGrand Rapids Amateur Astronomical Association.Grand Traverse Astronomical SocietyKalamazoo Astronomical SocietyMarquette Astronomical SocietyMuskegon Astronomical SocietyNorth Star Astronomical Society (NSAS)Oakland Astronomy ClubSeven Ponds Astronomy ClubShoreline Amateur Astronomical AssociationSirius StargazersSunset Astronomical SocietyUniversity Lowbrow AstronomersUniversity of Michigan Student Astronomical SocietWarren Astronomical Society
Minnesota

Arrowhead Astronomical Society, Duluth MNFargo-Moorhead Astronomical ClubMinnesota Astronomical Society
Mississippi

Galileo GroupJackson Astronomical AssociationRainwater Astronomers Assn.
Missouri

Astronomical Society of Kansas CityBoeing Employees Amateur Astronomers ClubCentral Missouri Astronomical AssociationEastern Missouri Dark Sky ObserversKansas Astronomy VillageLincoln County StargazersMcDonnell-Douglas Amateur AstronomersOzarks Amateur Astronomers ClubRiver Bend Astronomy ClubSpringfield Astronomical SocietySt. Louis Astronomical Society, Inc.Stilabower Public Observatory
Montana

Astronomical Institute of the RockiesBig Sky Astronomy ClubCentralmo Astronomy SocietyMission Valley Astronomy ClubNeuman Astronomical SocietySouthwest Montana Astronomical SocietyWestern Montana Astronomical AssociationYellowstone Valley Amateur Astronomers
Nebraska

Northeast Nebraska Astronomy ClubOmaha Astronomical SocietyPanhandle Astronomy ClubPrairie Astronomy Club
Nevada

Astronomical Society of NevadaAstronomical Society of Nevada, Las VegasLas Vegas Astronomical SocietyTonopah Astronomical Society
New Hampshire

Keene Amateur Astronomers, Inc.New Hampshire Astronomical Society
New Jersey

Amateur Astronomers Association of PrincetonAmateur Astronomers, Inc.ASTRA -Astronomical Society of the Toms River AreaConcordia Astronomy ClubDark Sky ObserversMonmouth Mobile Observer's GroupMontclair Telescope Club, Inc.Morris Museum Astronomical SocietyNew Jersey Astronomical Assn., Inc.North Jersey Astronomical GroupRockland Astronomy ClubRutgers Astronomical SocietySETI League, Inc.Sheep Hill Astronomical AssociationSkyland StargazersSomerset County 4-H Space & Astronomy ClubSouth Jersey Astronomy ClubSTAR Astronomy Society, Inc.The Passaic County Astronomical AssociationUnited Astronomy Clubs of New Jersey, Inc.West Jersey Astronomical Society Willingboro Astronomical Society
New Mexico

Alamogordo Astronomy ClubAmateur Astronomers GroupAstronomical Society of Las CrucesClovis Astronomy ClubEl Valle AstronomersMagdalena Astronomical SocietyNew Mexico Tech Astronomy ClubPajarito AstronomersRio Grande Astronomical Society (RGAS)Rio Rancho Astronomical SocietyRoswell Astronomy ClubSilver City Astronomical SocietyThe Albuquerque Astronomical Society
New York

Albany Area Amateur Astronomers, Inc.Amateur Astronomers Association of New YorkAmateur Observer's Society of New York, Inc.Astronomical Society of Long Island, Inc.Buffalo Astronomical AssociationCNY Observers & ObservingCuster Institute Observatoryimportance of education and learningIthaca Amateur AstronomersKopernik Astronomical SocietyMarshal Martz Memorial Astronomical Assn., Inc.Mid-Hudson Astronomy Assn.Mohawk Valley Astronomical SocietyOrange County Astronomical AssociationRensselaer Astrophysical SocietyRochester's Astronomy ClubSyracuse Astronomical SocietyWestchester Amateur Astronomers
North Carolina

Astronomical Society of Rowan CountyAstronomy Club of AshevilleCape Fear Astronomical SocietyCatawba Valley Astronomy ClubChapel Hill Astronomical and Observational Soc.Charlotte Amateur Astronomers ClubCleveland County Astronomical SocietyFoothills Astronomical SocietyForsyth Astronomical SocietyGreensboro Astronomy ClubLogos Astronomical SocietyPiedmont Amateur AstronomersPisgah Astronomical Research InstituteRaleigh Astronomy Club, Inc.Starfax AssociationTar River Astronomy ClubTriad Action Astronomy Club
North Dakota

Northern Skies Astronomical Society
Ohio

Astronomy Club of Akron, Inc.Astronomy For YouthBlack River Astronomical SocietyBrunswick Astronomy ClubChagrin Valley Astronomical SocietyColumbus Astronomical SocietyCuyahoga Astronomical AssociationLima Astronomical SocietyMahoning Valley Astronomical SocietyMedina County Astronomical SocietyMiami Valley Astronomical SocietyMillstream Astronomy ClubNorthern Ohio Valley Astronomical EducatorsOhio Turnpike Astronomers Assn.Ohio Valley Astronomical SocietyRichland Astronomical SocietySandusky Valley Amateur Astronomy ClubStillwater StargazersWayne County Astronomical SocietyWilderness Center Astronomy Club
Oklahoma

Astronomy Club of TulsaOdyssey Astronomy ClubOklahoma City Astronomy ClubTuva Astronomy Club
Oregon

Eugene Astronomical SocietyGrants Pass AstronomersMt. Hood Observatory Assn.Night Sky 45 Astronomy ClubNorthwest Astronomy GroupPine Mountain ObservatoryRose City AstronomersSouthern Oregon SkywatchersUmpqua Astronomers
Pennsylvania

90mmAmateur Astronomers Assn. of Pittsburgh, Inc.Amateur Astronomers of Beaver CountyAstronomical Society of HarrisburgAstronomy Enthusiasts of Lancaster CountyBerks County Amateur Astronomical Society, Inc.Bucks-Mont Astronomical Assn.Central Pennsylvania ObserversChesmont Astronomical SocietyChester County Astronomical SocietyDelaware Valley Amateur AstronomersErie County Mobile Observers GroupGreater Hazleton Area Astronomical SocietyLackawanna Astronomical SocietyLehigh Valley Amateur Astronomical Society, Inc.Oil Region Astronomical SocietyPenn State Astronomy ClubRittenhouse Astronomical SocietySir Isaac Newton Astronomical SocietyStarlight Astronomy ClubSusquehanna Valley Amateur AstronomersThe Kiski School Astronomy ClubVillanova Astronomical SocietyYork County Astronomical Society
Rhode Island

Astronomical Society of Southern New EnglandCelestial Observers of Rhode IslandSkyscrapers, Inc.
South Carolina

Beaufort South Carolina AstronomerCarolina Skygazers Astronomy ClubClemson Area Amateur AstronomersFoothills Astronomical SocietyGrand Strand SkygazersLowCountry StargazersMidlands Astronomy ClubMidlands Technical College Astronomy ClubRoper Mountain AstronomersUpstate Astrophotography
South Dakota

Black Hills Astronomical SocietySioux Empire Astronomy Club
Tennessee

Barnard Astronomical SocietyBarnard-Seyfert Astronomical SocietyBays Mountain Astronomy ClubBristol Astronomy ClubCumberland Astronomical SocietyKnoxville ObserversMemphis Astronomical SocietyMiddle Tennessee Astronomical SocietySmoky Mountain Astronomical Society
Texas

Amarillo Astronomy ClubAssn. of Amateur AstronomersAstronomical Society of East TexasAstronomical Society of North TexasAstronomy Students Association - UT/AustinAustin Astronomical SocietyBig Bend Astronomical SocietyBig Bend AstronomyCentral Texas Astronomical SocietyCrossroads Astronomy ClubEl Paso Astronomy ClubFort Bend Astronomy ClubFort Worth Astronomical Society, Inc.General Dynamics Astronomy ClubHouston Astronomical SocietyJohnson Space Center Astronomical SocietyKingsville Astronomical SocietyLipan Astronomy & Space SocietyNorth Houston Astronomy ClubNorth Texas SkywatchOlympus MonsSan Angelo Amateur Astronomy Assn.San Antonio Astronomical AssociationSan Antonio Astronomical Observers GroupSouth Plains Astronomy ClubSouth Plains Astronomy ClubSouth Texas Astronomical SocietyStar Astronomy ClubStarlight Observers League - SOLTexas Astronomical SocietyWest Texas AstronomersWhitney AstronomyWilliamson County Astronomy Club
Utah

Brigham Young University Astronomical SocietyCache Valley Astronomical SocietyCarbon County Star PartiesOgden Astronomical SocietySalt Lake Astronomical SocietySt. George Astronomy GroupUtah SkiesUtah Valley Astronomy AssociationUtah Valley Astronomy Club
Vermont

Hildene Astronomy ClubSpringfield Telescope MakersVermont Astronomical Society
Virginia

Astronomy Club of Virginia TechBack Bay Amateur AstronomersCharlottesville Astronomical SocietyNorfolk Astronomical SocietyNorthern Virginia Astronomy ClubRappahannock Astronomy ClubRichmond Astronomical SocietyRoanoke Valley Astronomical SocietyShenandoah Astronomical SocietySkywatchers Astronomy ClubSouthampton AstronomersStar City Astronomy Network
Washington

Battle Point Astronomical Assn.Boeing Employees' Astronomical SocietyEast Side Astronomical SocietyEverett Astronomical SocietyIsland County Astronomical SocietyMaple Valley Astronomical SocietyMaple Valley AstronomyOlympic Astronomical SocietySeattle Astronomical SocietySirius DippersSpokane Astronomical SocietyTacoma Astronomical SocietyTri-City Astronomy ClubVancouver Sidewalk AstronomersWashington State University Astronomy ClubWhatcom Association of Celestial ObserversYakima Valley Astronomy Club
West Virginia

ASTROLABE Astronomy Club of WheelingAstronomy Club of West Virginia UniversityCentral Appalachian Astronomy ClubKanawha Valley Astronomical Society, Inc.Ohio Valley Astronomical SocietyThe Astronomy Club of Southern West Virginia
Wisconsin

Chippewa Valley Astronomical SocietyDoor Peninsula Astronomical SocietyHolmen Astronomy ClubLaCrosse Area Astronomical SocietyMadison Astronomical SocietyMilwaukee Astronomical SocietyNeville Public Museum Astronomical SocietyNortheast Wisconsin StargazersRacine Astronomical SocietySheboygan Astronomical SocietyTry Astronomy MilwaukeeWehr Astronomical Society
Wyoming

Campbell County High School Astronomy ClubCentral Wyoming Astronomical SocietyCheyenne Astronomical SocietyLaramie Astronomical Soicety & Space Observers
AFRICA

Algeria

Sirius Astronomy Association
ETHIOPIA

BSSTC
ASIA

India

Astronomy Club Ahmedabad
Mongolia

Amateur Astronomy Club of Mongolia
Nepal

Nepali Association for Astronomical Mission (NAAM)
Viet Nam

Ho Chi Minh City Amateur Astronomy Club (HAAC)Vietnam Amateur Club of Astronomy (VACA)
AUSTRALIA

Capital Territory

Canberra Astronomical Society
New South Wales

-Illawarra Astronomical Society, Inc.Astronomical Society of CoonabarabranAstronomical Society of New South Wales, Inc.Newcastle Astronomical Society, Inc.Northern Sydney Astronomical SocietyThe Wollongong Amateur Astronomy ClubWestern Sydney Amateur Astronomy Group
Northern Territory

Astronomical Society of Alice SpringsDarwin Amateur Astronomy Group
Queensland

-Brisbane Astronomical Society, Inc.Astronomical Association of QueenslandBundaberg Astronomical Society, Inc.Bundaberg SkywatchersCairns Astronomy GroupSouth East Queensland Astronomical Society
South Australia

Astronomical Society of MelbourneAstronomical Society of South Australia, Inc.Flinders University Astronomcial Society
Tasmania

Astronomical Society of Tasmania, Inc.
Victoria

Astronomical Society of Victoria, Inc.Ballaarat Astronomical Society, Inc.Bendigo District Astronomical Society, Inc.Latrobe Valley Astronomical Society, Inc.Mornington Peninsula Astronomical SocietySnake Valley Astronomical Association
Western Australia

Astronomical Society of Western Australia
CANADA

Alberta

Ancient Light Astronomy ClubBig Sky Astronomical SocietyEdmonton Observers Group NetworkLethbridge Astronomy SocietyRASC -- Calgary CentreRASC -- Edmonton CentreSpaceAlberta, affiliated with Edmonton Observers
British Columbia

Fraser Valley Astronomers SocietyRASC -- Okanagan CentreRASC -- Prince George CenterRASC -- VancouverRASC -- Victoria Centre
Manitoba

RASC -- Winnipeg Centre
New Brunswick

Astro Club BorealisBeauséjour Astronomy Club Astronomie BeauséjourClub d'astronomie de la Péninsule acadienneHampton Astronomy ClubRASC -- New BrunswickRASC Moncton CentreRASC Moncton Centre, William Brydone Jack Unit
Newfoundland

RASC -- St. John's Centre
Nova Scotia

Cape Breton Astronomical SocietyMinas Astronomy GroupRASC -- Halifax Centre
Ontario

Astronomy and Space Exploration Society (U of T)Bruce County Astronomical SocietyDeep River Astronomy ClubDurham Region Astronomical AssociationHamilton Amateur AstronomersManitoulin Island Dark Sky AssociationNorth Bay Astronomy ClubNorth York Astronomical AssociationOttawa Valley Astronomy and Observers GroupPeterborough Astronomical AssociationRASC -- Hamilton CentreRASC -- Kingston CentreRASC -- Kitchener-Waterloo CentreRASC -- London CentreRASC -- Niagara CentreRASC -- Ottawa CentreRASC -- Sarnia CentreRASC -- Thunder Bay CentreRASC -- Toronto CentreRASC -- Windsor CentreSt.Marys Astronomy ClubSudbury Astronomy ClubThunder Bay Asronomy GroupThunder Bay ObservatoryYork University Astronomy Club
Prince Edward Island

RASC -- Charlottetown Centre
Québec

Club d'astronomie Cassiopée de SilleryClub d'Astronomie de BeloeilClub d'Astronomie de DorvalClub d'Astronomie de l'U. du Québec a RimouskiClub d'Astronomie Drummondville, Inc.Club d'Astronomie du CEGEP Lévis-LauzonClub d'Astronomie Jupiter, Inc.Club d'Astronomie Orion de Saint-TimothéeClub d'Astronomie SiriusClub d'astronomie VÉGA de Cap-RougeClub des Astronomes Amateurs Centre-MauricieClub des Astronomes Amateurs de LavalClub des Astronomes Amateurs de LongueuilClub des Astronomes Amateurs de SherbrookeFédération des Astronomes Amateurs du QuébecGroupe Astro & CCDLa Société d'Astronomie de MontréalRASC -- Montréal CentreRASC -- Québec Centre
Saskatchewan

RASC -- Regina CentreRASC -- Saskatoon Centre
CARIBBEAN

St.Lucia

St.Lucia Royal Astronomy Club
EUROPE

Czech Republic

Czech Astronomical Society
Germany

Institut für Astronomie und AstrophysikNürnberger Astronomische Arbeitsgeminschaft
Gibraltar

Gibraltar Amateur Astronomers Club
Ireland

Shannonside AstronomyTullamore Astronomical Society
Italy

Circolo Astrofili Astrum Caeli
FRANCE

Haute-Normandie

Parisflowershop
MEXICO

--

Sociedad Astronómica Julieta Fierro Gossman
D.F.

Centro Astronomico Clavius de la UIA AC
NEW ZEALAND

--

Royal Astronomical Society of New Zealand
Canterbury

Canterbury Astronomical SocietyCanterbury Astronomical Society, Ashburton Branch
South Auckland

Auckland Astronomical Society
Southland

Southland Astronomical Society
Taranaki

New Plymouth Astronomical Society
Wellington

Phoenix Astronomical SocietyWellington Astronomical Society
PUERTO RICO

--

Telescope Group
SOUTH AMERICA

Chile

Sociedad Astronómica de Valparaíso y Viña del Mar.
SRI LANKA

Western Province

IYA 2009 Sri LankaSkyLK
UNITED KINGDOM

England

Abingdon Astronomical SocietyAltrincham & District Astronomical SocietyAylesbury Astronomical SocietyBatley & Spenborough Astronomical SocietyBedford Astronomical SocietyBirmingham Astronomical SocietyBishop Auckland Astronomical SocietyBlackpool & District Astronomical SocietyBolton Astronomical SocietyBradford Astronomical SocietyBreckland Astronomical SocietyBridgwater Astronomical SocietyBrighton and Hove Astronomical SocietyBristol Astronomical SocietyBritish Astronomical AssociationCambridge Astronomical AssociationCastle Point Astronomical ClubChester Astronomical SocietyChesterfield Astronomical SocietyClacton & District Astronomical AssociationCleveland & Darlington Astronomical SocietyCoventry & Warwickshire Astronomical SocietyCrayford Manor House Astronomical SocietyCroydon Astronomical SocietyDerby & District Astronomical SocietyDurham University Astronomical SocietyEast Riding AstronomersEastbourne Astronomical SocietyEwell Astronomical SocietyEwell Astronomical SocietyExeter Astronomical SocietyFarnham Astronomical SocietyFederation of Astronomical SocietiesFurness & South Lakeland Astronomical SocietyGuildford Astronomical SocietyHampshire Astronomical GroupHantsAstroHeart of England Astronomical SocietyHebden Bridge Astronomy SocietyHerschel Astronomical SocietyHorsham Astronomy GroupHuddersfield Astronomical & Philosophical SocietyIlkeston & District Astronomical SocietyLancaster & Morecambe Astronomical SocietyLeeds Astronomical SocietyLeicester University Astronomical SocietyLetchworth & District Astronomical SocietyLincoln Astronomical SocietyLiverpool Astronomical SocietyLoughton Astronomical SocietyMacclesfield Astronomical SocietyMaidenhead Astronomical SocietyManchester Astronomical SocietyMansfield & Sutton Astronomical SocietyMexborough & Swinton Astronomical SocietyMid-Kent Astronomical SocietyMilton Keynes Astronomical SocietyNewbury Amateur Astronomical SocietyNorth Devon Astronomical SocietyNorth Essex Astronomical SocietyNorth Staffordshire Astronomical SocietyNorthamptonshire Natural History Society, AstronomNorthants Amateur AstronomersNorwich Astronomical SocietyNottingham Astronomical SocietyOrpington Astronomical SocietyOrwell Astronomical SocietyOrwell Astronomical Society (Ipswich)Peterborough Astronomical SocietyPlymouth Astronomical SocietyPreston & District Astronomical SocietyReading Astronomical SocietyShropshire Astronomical SocietySociety for Popular AstronomySouth Downs Astronomical SocietySouth East Kent Astronomical SocietySouth Lincolnshire Astronomical & Geophysical SociSouth West Herts Astronomical SocietySouthampton Astronomical SocietySouthern Area Group of Astronomical SocietiesSunderland Astronomical SocietyWelsh Border AstronomersWest Yorkshire Astronomical SocietyWorcester Astronomical SocietyWorthing AstronomersWycombe Astronomical SocietyYork Astronomical Society
Island of Guernsey

Guernsey Astronomy Society
Isle of Man

Isle of Man Astronomical Society
Scotland

Aberdeen & District Astronomical SocietyAstronomical Society of EdinburghAstronomical Society of GlasgowDundee Astronomical SocietyDunfermline Astronomical SocietyHighland Astronomical Society
Wales

Cardiff Astronomical SocietyGwynedd Astronomical SocietyNorthwest Group of Astronomical SocietiesSwansea Astronomical Society
UNITED STATES

California

Itlyflowers