Astronomy - Telescope Making - Astrophotography

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American Assn. of Variable Star Observers
American Association of Amateur Astronomers
American Lunar Society
American Meteor Society, Ltd.
Antique Telescope Society
Association of Lunar and Planetary Observers
Astronomical League
Astronomical Society of the Pacific Foro Astronomía Observacional100
Astronomy Day Headquarters
International Association for Astronomical Studies
International Astronomical Union
International Dark-Sky Association11000
International Meteor Organization250
International Occultation Timing Association
Night Skies Network9681
North American Meteor Network
Oregon Star Party 
RTMC Astronomy Expo
Society of Amateur Radio Astronomers
Texas Star Party
The Royal Astronomical Society of Canada (RASC)
The SETI League, Inc.
The Sidewalk Astronomers

Visual Satellite Observers
Western Amateur Astronomers



AuburnAuburn Astronomical Society20

FlorenceShoals Astronomy Club20

GadsdenN.E.R.D.S. 10

HueytownBirmingham Astronomical Society80

HuntsvilleVon Braun Astronomical Society100

FlorenceUNA Astronomy Club  →
MobileMobile Astronomical Society  

TuscaloosaThe Astronomical Society of Tuscaloosa  


Yahoo GroupAlaskan Astronomy Group
AnchorageChugach Stargazer Society  
FairbanksFairbanks Astronomical Unit 


AnthemDesert Foothills Astronomy Club
ClarkdaleAstronomers of Verde Valley70

FlagstaffCoconino Astronomical Society20

Green ValleySonora Astronomical Society (SAS)180+

Heber-OvergaardHeber-Overgaard Astronomy Club30

Oro ValleySun City Astronomy Club170

PaysonRim Astronomy club
PhoenixEast Valley Astronomy Club235

PhoenixPhoenix Astronomical Society100

PhoenixSaguaro Astronomy Club100+

PrescottPrescott Astronomy Club65

SedonaSirius Lookers of Sedona80

Sierra VistaHuachuca Astronomy Club50

Sun City WestAstronomy Club of Sun City West  →
SurpriseWest Valley Astronomy Club

TucsonTucson Amateur Astronomy Assn.290

TucsonUniversity of Arizona Astronomy Club20

VerradoAstronomy Club AZ
VerradoAstronomy Club of Verrado  →
YumaYuma Astronomy Club172

EagarWhite Mountains Astronomy Club  
Grand CanyonAstronomical Society of the Grand Canyon  
KingmanHigh Desert Astronomy Club 

Lake Havasu CityLake Havasu Astronomy Club  

PimaDesert Skygazer Astronomy Club 


Bella VistaOzark Stargazers

Bella VistaSugar Creek Astronomical Society

Little RockCentral Arkansas Astronomical Society40

NashvilleRed River Astronomy CLub

RussellvilleRiver Valley Stargazers 20
Van BurenArkansas-Oklahoma Astronomical Society41

FayettevilleAstronomical Society of Northwest Arkansas  
Hot Springs VillageHot Springs Village Star Gazers  
Siloam SpringsChristian Association of Stellar Explorers  
State UniversityNortheast Arkansas Sky Crew  


Apple ValleyHigh Desert Astronomical Society50

BakersfieldKern Astronomical Society, Inc.60

BerkeleyAstronomical Association of Northern California

Big Bear LakeBig Bear Valley Astronomical Society

ClaremontPomona Valley Amateur Astronomers112

ConcordMount Diablo Astronomical Society170

Costa MesaOrange County Astronomers850+

DavisAstronomy Club of the U C Davis

DavisDavis Astronomy Club

EurekaAstronomers of Humboldt25

FresnoCentral Valley Astronomers, Inc.60

HerculesHercules Stargazers 20

Joshua TreeSouthern California Desert Video Astronomers

KernvilleKern River Valley Astronomy Club

Lake ArrowheadMountain Skies Astronomical Society310

LivermoreTri-Valley Stargazers190

Los AngelesLos Angeles Astronomical Society600+

MarinaAstronomical Society of the Central Coast  →
MarinaMIRA Observers Group

MonroviaOld Town Sidewalk Astronomers
Mountain ViewPeninsula Astronomical Society250

Mt. ShastaMt Shasta Star Gazers

OaklandEastbay Astronomical Society200

Palm DesertAstronomical Society of the Desert

PalmdaleAntelope Valley Astronomy Club, Inc100

Rancho CaliforniaTemecula Valley Astronomers

ReddingShasta Astronomy Club

RiversideRiverside Astronomical Society285

SacramentoSacramento Valley Astronomical Society

San BernardinoSan Bernardino Valley Amateur Astronomers

San DiegoSan Diego Astronomy Association600

San DiegoSchwartz Astronomical Society3

San FranciscoSan Francisco Amateur Astronomers350

San JoseHalls Valley Astronomical Group25

San JoseSan Jose Astronomical Association

San Juan BautistaFremont Peak Observatory Association175

San LeandroGroup 70 -- Large Amateur Telescope Project
San Luis ObispoCentral Coast Astronomical Society90

San MateoSan Mateo County Astronomical Society110

Santa BarbaraSanta Barbara Astronomical Unit90

Santa ClaritaLocal Group Astronomy Club

Santa CruzSanta Cruz Astronomy Club40

Santa MonicaSanta Monica Amateur Astronomy Club

Santa RosaSonoma County Astronomical Society150

Simi ValleyVentura County Astronomical Society

StocktonStockton Astronomical Society140

TehachapiGreater Tehachapi Astronomy Club28

TemeculaStony Ridge Observatory, Inc.25

TorranceSouth Bay Astronomical Society75

Van NuysLos Angeles Valley College Astronomy Group25

Vandenberg AFBVandenberg Amateur Astronomical Society35

VisaliaTulare Astronomical Association120

Walnut creekMount Diablo Observatory Association  →
Yucca ValleyThe Andromeda Society70

AptosCabrillo Astronomy Club -
ArcataArcata Society for Amateur Astronomers  
BishopWhite Mountain Astronomers 
BlytheColorado River Astronomy Club  
BreaGolfing Astronomer Musician's Association  
ChatsworthCelestial Observers  
CypressWestern Observatory Astronomy Society  
Glen EllenValley of the Moon Astronomical Society  
IdyllwildIdyll-Gazers Amateur Astronomy Club  
LakewoodExcelsior Telescope Club  
Lockwood ValleyOne club that requests to be unlisted  
Long BeachLong Beach Astronomical Socity  
Los AngelesClear Nights 
Los AngelesThe Astronomy Forum 
Los GatosThe Astronomy Connection 

MantecaManteca Observer's Group  
MercedM-STAR Astronomy Club 
MercedMerced Society for Telescope & Astronomy Rec 
Mill ValleyMarin Stargazers  
ModestoGreat Valley Astronomy Club  
ModestoStanislaus Amateur Astronomers  
MoorparkOne club that requests to be unlisted  
Oceanside (San Diego)Oceanside Photo & Telescope Astronomical Society  
Palm DesertSun City Palm Desert Astronomy Club  
PasadenaCaltech SEDS  
PasadenaMount Wilson Observatory Assn. 
RidgecrestChina Lake Astronomical Society  
SacramentoSidewalk Astronomers of Sacramento  
San AnselmoTamalpais Astronomical Society  
San DiegoNot When the Surf's Up Amateur Astronomers Group  
San FranciscoSan Francisco Sidewalk Astronomers 
San FranciscoStudents Taking Astronomy-Related Subjects  
San MateoCCFF Astronomy Club  
Sherman OaksSherman Oaks Astronomers Group  
Simi ValleySouthern California Observers  
SomisPolaris Observatory Association Inc. 
South Lake TahoeLake Tahoe Astronomers  
SpringvilleTule River Amateur Astronomers  
TemeculaFirstLight Astronomy Club 

UkiahUkiah Astronomical Society  
WhittierRio Hondo Astronomical Society  


BoulderBoulder Astronomy & Space Society

Buena VistaArkansas Valley Astronomical Society
Colorado SpringsColorado Springs Astronomical Society90

DenverDenver Astronomical Society

DurangoFour Corners Stargazers

Fort CollinsNorthern Colorado Astronomical Society60

Grand JunctionWestern Colorado Astronomy Club24

LongmontLongmont Astronomical Society40

MontroseBlack Canyon Astronomical Society

PuebloSouthern Colorado Astronomical Society30

CliftonColorado Astronomy & Space Research Organization  
ElbertHigh Plains Astronomy Club  
Glenwood SpringsThree Rivers Astronomy Club  
Grand JunctionPalisade Astronomy Connection  
GunnisonGunnison Valley Astronomical Society  
PuebloRocky Mountain Astronomy Club  
San AnselmoTamalpais Astronomical Society  
Steamboat SpringsYampa Valley Astronomy Club  


GreenwichAstronomical Society of Greenwich

HartfordAstronomical Society of Greater Hartford105

New HavenAstronomical Society of New Haven, Inc.

NoankThames Amateur Astronomical Society30

StratfordBoothe Memorial Astronomical Society20

TorringtonLitchfield Hills Amateur Astronomy Club

WestportWestport Astronomical Society120

StamfordFairfield County Astronomical Society 
WaterburyMattatuck Astronomical Society 


SmyrnaDelmarva Star Gazers
WilmingtonDelaware Astronomical Society

District of Columbia

College Park, MDNational Capital Astronomers250


BradentonLocal Group of Deep Sky Observers100

CocoaBrevard Astronomical Society40
Fort LauderdaleSouth Florida Amateur Astronomers Assn.70
Fort MyersSouth West Florida Astronomical Society
Fort PierceTreasure Coast Astronomical Society45
GainesvilleAlachua Astronomy Club, Inc.110

JacksonvilleNortheast Florida Astronomical Society, Inc.70
Lady LakeThe Villages Astronomy Club
MelbourneFIT Astronomy Society40

MiamiBelen Jesuit Prep School Astronomy Club
MiamiSouthern Cross Astronomical Society200

NaplesEverglades Astronomical Society40
Panama CityAstronomical Society of Bay County12
PensacolaEscambia Amateur Astronomers Assn.150

St. AugustineAncient City Astronomy Club40
St. PetersburgSt. Petersburg Astronomy Club, Inc.270

TallahasseeTallahassee Astronomical Society40
TampaMARS Astronomy Club25

TitusvilleKennedy Space Center Amateur Astronomers30
West Palm BeachAstronomical Society of the Palm Beaches100

Winter ParkCentral Florida Astronomical Society
Crystal RiverCrystal River High School Astronomy Club 
EnglewoodLemon Bay High School Astronomy Club  
OcalaGreater Ocala Astronomy Club 
Pine HillsCosmo Astronomical Society  
SebringHighlands Stargazers  
SeminoleAstro Scopers 
Vero BeachIndian River Astronomical Society  
Winter HavenWinter Haven Astronomy Club  


Atlanta/MariettaAtlanta Astronomy Club, Inc.270

AugustaAstronomy Club of Augusta60
GainesvilleNorth Georgia Astronomy Club60
GriffinFlint River Astronomy Club40
MaconMiddle Georgia Astronomical Society30
SavannahOglethorpe Astronomical Assn.40

SharonDeerlick Astronomy Village
StatesboroStatesboro Astronomy Club50
AthensAthens Astronomical Association  
ColumbusChattahoochee Valley Astronomical Society  
MaconMacon State College Astronomy Club  
StatesboroGalloway Amateur Astronomy Club 
TiftonSouthern Georgia Astronomers - SGA  


HonoluluHawaiian Astronomical Society
MauiMaui Astronomy Club10
WaimeaKauai Educational Assn. for Science & Astronomy
Ocean ViewMeteor Group Hawaii  


BoiseBoise Astronomical Society75

Idaho FallsIdaho Falls Astronomical Society40

JeromeMagic Valley Astronomical Society20


AlgonquinPlanetary Studies Foundation
BataviaFox Valley Astronomical Society15
CarbondaleAstronomical Association of Southern Illinois30
ChampaignChampaign-Urbana Astronomical Society75
ChicagoChicago Astronomer370

ChicagoChicago Astronomical Society110

ChicagoRyerson Astronomical Society15
DeerfieldSkokie Valley Astronomers45
KankakeeKankakee Area Stargazers45

NapervilleNaperville Astronomical Assn.120

NormalTwin City Amateur Astronomers, Inc.50

PeoriaPeoria Astronomical Society, Inc.125

Rock IslandPopular Astronomy Club, Inc.75

RockfordRockford Amateur Astronomers Inc.52

SchaumburgNorthwest Suburban Astronomers100

SpringfieldSangamon Astronomical Society25
St. JacobRiver Bend Astronomy Club  →
UrbanaAstronomical Society at Univ. of Illinois100

VoloLake County Astronomical Society100

DecaturDecatur Area Astronomy Club 
DeKalbNorthern Illinois University Astronomical Society 
DixonNorthern Illinois Stargazers  


BedfordStonebelt Stargazers

ColumbusColumbus Astronomy Club

EvansvilleEvansville Astronomical Society, Inc.

FarmlandMuncie Astronomy Club35

Fort WayneFort Wayne Astronomical Society, Inc.102

GriffithCalumet Astronomical Society75

MooresvilleIndiana Astronomical Society, Inc.150

South BendMichiana Astronomical Society20

West LafayetteWabash Valley Astronomical Society35

Winona LakeWarsaw Astronomical Society30

FremontAstronomical Society of Hillsdale County  
KokomoKokomo Astronomy Club  
Terre HauteRose-Hulman Astronomical Society  
WabashWabash County Astronomical Society  


AmesAmes Area Amateur Astronomers80

Cedar RapidsCedar Amateur Astronomers, Inc.100

DavenportQuad Cities Astronomy Club

Des MoinesDes Moines Astronomical Society, Inc.40

IndianolaCentral Iowa Astronomers4

Iowa CityIowa City Astronomy Club20

TamaAmateur Astronomers of Central Iowa

CherokeeNorthwest Iowa Astronomers  
Des MoinesDes Moines Astronomy Club 
WaterlooCedar Valley Amateur Astronomers Association  
West BurlingtonSoutheast Iowa Astronomy Club 


LawrenceAstronomy Associates of Lawrence20
SalinaSalina Astronomy Club20

TopekaNortheast Kansas Amateur Astronomers' League, Inc.40
WichitaKansas Astronomical Observers30

Dodge CityHigh Plains Astronomical Society 
ManhattanNorth Central Kansas Astronomical Society 
TopekaHeartland Astronomical Research Team  


Dawson SpringsWestern Kentucky Amateur Astronomers

LexingtonBlue Grass Amateur Astronomy Club

LouisvilleLouisville Astronomical Society100

Pine KnotBig South Fork Star Gazers

StaffordsvilleEastern Kentucky Astronomy Connection 
HuntingtonOhio Valley Astronomical Society  


Baton RougeBaton Rouge Astronomical Society, Inc.

New OrleansPontchartrain Astronomy Society, Inc.160

ShreveportShreveport-Bossier Astronomical Society, Inc.60


BangorPenobscot Valley Star Gazers
BoothbayCentral Maine Astronomical Society30
KennebunkportAstronomical Society of Northern New England140

PembrokeDowneast Amateur Astronomy Club


BaltimoreBaltimore Astronomical Society140
Bel AirHarford County Astronomical Society60
CentrevilleNorthern Virginia Astronomy Club600+
ColumbiaHoward Astronomical League50
FrostburgCumberland Astronomy Club

GreenbeltAstronomical Society of Greenbeld

GreenbeltGoddard Astronomy Club40
HagerstownTri-State Astronomers25
SykesvilleWestminster Astronomical Society
White PlainsSouthern Maryland Astronomical Society
ArnoldAnne Arundel Assn. of Amateur Astronomers  
Silver SpringThe Patient Astronomer  


AmherstAmherst Astronomy Assn.70
BostonBoston University Astronomical Society60

Boston & WestfordAmateur Telescope Makers of Boston, Inc.350
BrewsterCape Cod Astronomical Society65
EdgartownMartha's Vineyard Astronomy Club16
GloucesterGloucester Area Astronomy Club30
GrovelandNorth Shore Amateur Astronomy Club117

NorwellSouth Shore Astronomical Society50
PaxtonAldrich Astronomical Society50
RehobothAstronomical Society of Southern New England100
SpringfieldSpringfield Stars Club75
AdamsNorthern Berkshire Amateur Astronomy Club  
KingstonSilver Lake Regional High School Astronomy Club  
PittsfieldPittsfield Astronomy Club  
PlymouthBay Colony Astronomical Society  
SaugusDouble Star Observer  


Ann ArborUniversity Lowbrow Astronomers100

Ann ArborUniversity of Michigan Student Astronomical Societ
DearbornFord Amateur Astronomy Club153

East LansingCapital Area Astronomy Club60

Grand RapidsGrand Rapids Amateur Astronomical Association.200
HollandShoreline Amateur Astronomical Association20
JacksonAmateur Astronomers of Jackson28
KalamazooKalamazoo Astronomical Society175
MidlandSunset Astronomical Society50

MilfordGeneral Motors Astronomy Club

MuskegonMuskegon Astronomical Society
Rochester HillsOakland Astronomy Club25
RockwoodSirius Stargazers40
Traverse CityGrand Traverse Astronomical Society50
WarrenWarren Astronomical Society112

YpsilantiEastern Michigan Univ. Astronomy Club
ClarkstonDetroit Astronomical Society  

EscanabaDelta Astronomical Society  
FlintGenesee Astronomical Society  
GaylordNorth Star Astronomical Society (NSAS) 
Manitou BeachAstronomical Society of Lenawee & Hillsdale  
MarquetteMarquette Astronomical Society 

MidlandSeven Ponds Astronomy Club 
RochesterDinosaur Hill Astro. Society  


DuluthArrowhead Astronomical Society, Duluth MN20
Minneapolis and St. PaulMinnesota Astronomical Society400

MoorheadFargo-Moorhead Astronomical Club15


French CampRainwater Astronomers Assn.30
JacksonJackson Astronomical Association40
GreenvilleGalileo Group  


Blue SpringsAstronomical Society of Kansas City

ColumbiaCentral Missouri Astronomical Association
SpringfieldOzarks Amateur Astronomers Club30

SpringfieldSpringfield Astronomical Society
St. LouisRiver Bend Astronomy Club30

St. LouisSt. Louis Astronomical Society, Inc.250
WashingtonEastern Missouri Dark Sky Observers
Blue SpringsKansas Astronomy Village  
FlorissantMcDonnell-Douglas Amateur Astronomers  

LamarStilabower Public Observatory  
St. LouisBoeing Employees Amateur Astronomers Club  
TroyLincoln County Stargazers  


BillingsYellowstone Valley Amateur Astronomers40
BozemanSouthwest Montana Astronomical Society55
KalispellBig Sky Astronomy Club25

MissoulaWestern Montana Astronomical Association20

UlmCentralmo Astronomy Society35

HelenaAstronomical Institute of the Rockies  
HelenaNeuman Astronomical Society  
RavalliMission Valley Astronomy Club 


LincolnPrairie Astronomy Club100
OmahaOmaha Astronomical Society90
ScottsbluffPanhandle Astronomy Club  
NorfolkNortheast Nebraska Astronomy Club  


HendersonAstronomical Society of Nevada, Las Vegas
Las VegasLas Vegas Astronomical Society
Reno, Tonopah, Las Vegas, Reno, SparksAstronomical Society of Nevada
TonopahTonopah Astronomical Society  

New Hampshire

AlsteadKeene Amateur Astronomers, Inc.25
ManchesterNew Hampshire Astronomical Society150

New Jersey

BoontonSheep Hill Astronomical Association
CliftonNorth Jersey Astronomical Group50
ClosterRockland Astronomy Club
CranfordAmateur Astronomers, Inc.221
East HanoverSkyland Stargazers15
GloucesterWillingboro Astronomical Society  →
Gloucester CityWest Jersey Astronomical Society
High BridgeNew Jersey Astronomical Assn., Inc.
Little FerrySETI League, Inc.1467
MorristownMorris Museum Astronomical Society25
PiscatawayRutgers Astronomical Society
PrincetonAmateur Astronomers Association of Princeton
Red BankSTAR Astronomy Society, Inc.60
Toms RiverASTRA -Astronomical Society of the Toms River Area75
Upper TownshipSouth Jersey Astronomy Club110
WarrenUnited Astronomy Clubs of New Jersey, Inc.
BridgewaterSomerset County 4-H Space & Astronomy Club  
HowellMonmouth Mobile Observer's Group  
JamesburgConcordia Astronomy Club 
NewtonDark Sky Observers  
NewtonMontclair Telescope Club, Inc. 
PatersonThe Passaic County Astronomical Association  

New Mexico

AlamogordoAmateur Astronomers Group

AlbuquerqueThe Albuquerque Astronomical Society420

Las CrucesAstronomical Society of Las Cruces100
Los AlamosPajarito Astronomers
MagdalenaMagdalena Astronomical Society20

RanchvaleClovis Astronomy Club

Rio RanchoRio Rancho Astronomical Society
RoswellRoswell Astronomy Club
Silver CitySilver City Astronomical Society 
SocorroNew Mexico Tech Astronomy Club 
TaosEl Valle Astronomers 
AlamogordoAlamogordo Astronomy Club 
CorralesRio Grande Astronomical Society (RGAS) 

New York

BuffaloBuffalo Astronomical Association150
ChappaquaWestchester Amateur Astronomers
ClintonMohawk Valley Astronomical Society
JamestownMarshal Martz Memorial Astronomical Assn., Inc.
MassapequaAstronomical Society of Long Island, Inc.
Merrick, Long IslandAmateur Observer's Society of New York, Inc.
New PaltzMid-Hudson Astronomy Assn.75
New YorkAmateur Astronomers Association of New York150

NiskayunaAlbany Area Amateur Astronomers, Inc.140+
RochesterRochester's Astronomy Club350

SoutholdCuster Institute Observatory
SyracuseSyracuse Astronomical Society60
TroyRensselaer Astrophysical Society25
VestalKopernik Astronomical Society

IthacaIthaca Amateur Astronomers  
Orange CountyOrange County Astronomical Association 

North Carolina

AshevilleAstronomy Club of Asheville45
Boiling SpringsCleveland County Astronomical Society
Chapel HillChapel Hill Astronomical and Observational Soc.

CharlotteCharlotte Amateur Astronomers Club
ColumbusFoothills Astronomical Society
GreensboroGreensboro Astronomy Club
HickoryCatawba Valley Astronomy Club45
RaleighRaleigh Astronomy Club, Inc.80
RosmanPisgah Astronomical Research Institute
SalisburyAstronomical Society of Rowan County

TroutmanPiedmont Amateur Astronomers
WilmingtonCape Fear Astronomical Society
WilsonTar River Astronomy Club

Winston-SalemForsyth Astronomical Society
Archdale/High PointTriad Action Astronomy Club  
AshevilleStarfax Association  
Winston-SalemLogos Astronomical Society  

North Dakota

Grand ForksNorthern Skies Astronomical Society


AkronAstronomy Club of Akron, Inc.
BellaireNorthern Ohio Valley Astronomical Educators

Chagrin FallsChagrin Valley Astronomical Society40
ColumbusColumbus Astronomical Society
DaytonMiami Valley Astronomical Society110

FindlayMillstream Astronomy Club
HuntingtonOhio Valley Astronomical Society
LimaLima Astronomical Society32
LucasAstronomy For Youth12
MansfieldRichland Astronomical Society
MansfieldSandusky Valley Amateur Astronomy Club

Newton FallsMahoning Valley Astronomical Society
North OlmsteadCuyahoga Astronomical Association
OberlinBlack River Astronomical Society35

TroyStillwater Stargazers
WilmotWilderness Center Astronomy Club
WoosterWayne County Astronomical Society25
BrunswickBrunswick Astronomy Club  
LakewoodOhio Turnpike Astronomers Assn. 
MedinaMedina County Astronomical Society  


Oklahoma CityOklahoma City Astronomy Club
StillwaterTuva Astronomy Club
TulsaAstronomy Club of Tulsa
WanetteOdyssey Astronomy Club  


AshlandSouthern Oregon Skywatchers
BendPine Mountain Observatory

EugeneEugene Astronomical Society
Grants PassGrants Pass Astronomers15
PortlandRose City Astronomers
RoseburgUmpqua Astronomers
BoringMt. Hood Observatory Assn.  
SalemNight Sky 45 Astronomy Club  
VernoniaNorthwest Astronomy Group 


AllentownLehigh Valley Amateur Astronomical Society, Inc.
altoonaStarlight Astronomy Club
AvondaleChester County Astronomical Society
ChalfontBucks-Mont Astronomical Assn.
Clarks SummitLackawanna Astronomical Society100

ConynghamGreater Hazleton Area Astronomical Society30

Franklin/Oil CityOil Region Astronomical Society30

HarrisburgAstronomical Society of Harrisburg

LancasterAstronomy Enthusiasts of Lancaster County

LimerickChesmont Astronomical Society
NorristownDelaware Valley Amateur Astronomers

PhiladelphiaRittenhouse Astronomical Society70

PittsburghAmateur Astronomers Assn. of Pittsburgh, Inc.550

VillanovaVillanova Astronomical Society

Western PennsylvaniaAmateur Astronomers of Beaver County

WyomissingBerks County Amateur Astronomical Society, Inc.
YorkYork County Astronomical Society

ErieErie County Mobile Observers Group  
KaneSir Isaac Newton Astronomical Society 
LewisburgSusquehanna Valley Amateur Astronomers 

SaltsburgThe Kiski School Astronomy Club  
State CollegeCentral Pennsylvania Observers  
University ParkPenn State Astronomy Club -

Rhode Island

North ScituateSkyscrapers, Inc.

RehobothAstronomical Society of Southern New England

ProvidenceCelestial Observers of Rhode Island  

South Carolina

CharlestonLowCountry Stargazers17

ColumbiaMidlands Astronomy Club80

GreenvilleRoper Mountain Astronomers

SenecaClemson Area Amateur Astronomers

BeaufortBeaufort South Carolina Astronomer  
ColumbiaMidlands Technical College Astronomy Club  
ColumbusFoothills Astronomical Society 
Myrtle BeachGrand Strand Skygazers  
Rock HillCarolina Skygazers Astronomy Club  
SenecaUpstate Astrophotography  

South Dakota

Rapid CityBlack Hills Astronomical Society

Sioux FallsSioux Empire Astronomy Club  


BrentwoodBarnard-Seyfert Astronomical Society

ChattanoogaBarnard Astronomical Society

GallatinCumberland Astronomical Society35

KnoxvilleKnoxville Observers

KnoxvilleSmoky Mountain Astronomical Society

MemphisMemphis Astronomical Society

BristolBristol Astronomy Club 

KingsportBays Mountain Astronomy Club  
ManchesterMiddle Tennessee Astronomical Society  


AlpineBig Bend Astronomical Society  →
AlpineBig Bend Astronomy

AmarilloAmarillo Astronomy Club45
ArlingtonOlympus Mons
AustinAustin Astronomical Society200

DallasTexas Astronomical Society520

FlintAstronomical Society of East Texas

Fort WorthFort Worth Astronomical Society, Inc.150

GeorgetownWilliamson County Astronomy Club
HoustonFort Bend Astronomy Club124

HoustonHouston Astronomical Society250

HoustonJohnson Space Center Astronomical Society
KingwoodNorth Houston Astronomy Club160

LeanderAstronomy Students Association - UT/Austin
LipanLipan Astronomy & Space Society
LubbockSouth Plains Astronomy Club

MidlandWest Texas Astronomers

North Richland HillsWhitney Astronomy

San AngeloSan Angelo Amateur Astronomy Assn.57

San AntonioSan Antonio Astronomical Association240

VictoriaCrossroads Astronomy Club

WacoCentral Texas Astronomical Society130

AzleNorth Texas Skywatch  
BrownsvilleSouth Texas Astronomical Society  
College StationAssn. of Amateur Astronomers  
El PasoEl Paso Astronomy Club 
Fort WorthGeneral Dynamics Astronomy Club  
KingsvilleKingsville Astronomical Society  
LaradoStar Astronomy Club  
LubbockSouth Plains Astronomy Club 
San AntonioSan Antonio Astronomical Observers Group 
ShermanAstronomical Society of North Texas  
Wichita FallsStarlight Observers League - SOL 


LindonUtah Valley Astronomy Association  →
LoganCache Valley Astronomical Society

OgdenOgden Astronomical Society55

Pleasant GroveUtah Valley Astronomy Club100

PriceCarbon County Star Parties230

ProvoBrigham Young University Astronomical Society

Salt Lake CitySalt Lake Astronomical Society160

St. GeorgeSt. George Astronomy Group50

Park CityUtah Skies  


SpringfieldSpringfield Telescope Makers100

WillistonVermont Astronomical Society

ManchesterHildene Astronomy Club  


BlacksburgAstronomy Club of Virginia Tech

CharlottesvilleCharlottesville Astronomical Society

ChesapeakeNorfolk Astronomical Society25
FincastleRoanoke Valley Astronomical Society
FredericksburgRappahannock Astronomy Club

MiddletownShenandoah Astronomical Society45

RichmondRichmond Astronomical Society

RoanokeStar City Astronomy Network10

Virginia BeachBack Bay Amateur Astronomers

FranklinSouthampton Astronomers  
HamptonSkywatchers Astronomy Club  


Bainbridge IslandBattle Point Astronomical Assn.

BellevueEast Side Astronomical Society140
CusterWhatcom Association of Celestial Observers

EverettEverett Astronomical Society60

Oak HarborIsland County Astronomical Society30

Port GambleOlympic Astronomical Society

RichlandTri-City Astronomy Club41
SeattleSeattle Astronomical Society235

SpokaneSpokane Astronomical Society

TacomaTacoma Astronomical Society175

VancouverVancouver Sidewalk Astronomers

YakimaYakima Valley Astronomy Club20

Friday HarborSirius Dippers  
Maple ValleyMaple Valley Astronomical Society  
Maple valleyMaple Valley Astronomy  
PullmanWashington State University Astronomy Club  
SeattleBoeing Employees' Astronomical Society 

West Virginia

ClarksburgCentral Appalachian Astronomy Club28

Cross LanesKanawha Valley Astronomical Society, Inc.
HuntingtonOhio Valley Astronomical Society

MorgantownAstronomy Club of West Virginia University 
WheelingASTROLABE Astronomy Club of Wheeling 
AthensThe Astronomy Club of Southern West Virginia  


AppletonNortheast Wisconsin Stargazers75

Fall CreekChippewa Valley Astronomical Society

FranklinWehr Astronomical Society

Green BayNeville Public Museum Astronomical Society

LaCrosseLaCrosse Area Astronomical Society50

MadisonMadison Astronomical Society
MilwaukeeTry Astronomy Milwaukee
New BerlinMilwaukee Astronomical Society

SheboyganSheboygan Astronomical Society30
Sturgeon BayDoor Peninsula Astronomical Society

Union GroveRacine Astronomical Society

HolmenHolmen Astronomy Club  


CasperCentral Wyoming Astronomical Society

CheyenneCheyenne Astronomical Society

LaramieLaramie Astronomical Soicety & Space Observers
GilletteCampbell County High School Astronomy Club  



ConstantineSirius Astronomy Association70





AhmedabadAstronomy Club Ahmedabad


Ulan BatorAmateur Astronomy Club of Mongolia  


BirgunjNepali Association for Astronomical Mission (NAAM)15

Viet Nam

HanoiVietnam Amateur Club of Astronomy (VACA)
Ho Chi Minh CityHo Chi Minh City Amateur Astronomy Club (HAAC)


Capital Territory

CanberraCanberra Astronomical Society

New South Wales

CoonabarabranAstronomical Society of Coonabarabran30

NewcastleNewcastle Astronomical Society, Inc.

SydneyAstronomical Society of New South Wales, Inc.

SydneyNorthern Sydney Astronomical Society

SydneyWestern Sydney Amateur Astronomy Group

Wollongong-Illawarra Astronomical Society, Inc.
WollongongThe Wollongong Amateur Astronomy Club

Northern Territory

Alice SpringsAstronomical Society of Alice Springs  

KaramaDarwin Amateur Astronomy Group 


BrisbaneAstronomical Association of Queensland100

BrisbaneSouth East Queensland Astronomical Society26

Bundaberg SouthBundaberg Astronomical Society, Inc.
Morningside-Brisbane Astronomical Society, Inc.

White RockCairns Astronomy Group

BundabergBundaberg Skywatchers  

South Australia

AdelaideAstronomical Society of South Australia, Inc.

BentleighAstronomical Society of Melbourne 

AdelaideFlinders University Astronomcial Society 


CambridgeAstronomical Society of Tasmania, Inc.


BendgoBendigo District Astronomical Society, Inc.

FrankstonMornington Peninsula Astronomical Society

MelbourneAstronomical Society of Victoria, Inc.

Mount PleasantBallaarat Astronomical Society, Inc.

Snake ValleySnake Valley Astronomical Association

Traralgon BCLatrobe Valley Astronomical Society, Inc.

Western Australia

PerthAstronomical Society of Western Australia



CalgaryRASC -- Calgary Centre

EdmontonRASC -- Edmonton Centre225

LethbridgeLethbridge Astronomy Society

VulcanBig Sky Astronomical Society

Drayton ValleyAncient Light Astronomy Club  
EdmontonEdmonton Observers Group Network  
EdmontonSpaceAlberta, affiliated with Edmonton Observers  

British Columbia

AbbotsfordFraser Valley Astronomers Society
KelownaRASC -- Okanagan Centre

Prince GeorgeRASC -- Prince George Center

VancouverRASC -- Vancouver

VictoriaRASC -- Victoria Centre200


WinnibegRASC -- Winnipeg Centre

New Brunswick

Riviere-VerteAstro Club Borealis

Saint JohnRASC -- New Brunswick

DieppeBeauséjour Astronomy Club Astronomie Beauséjour  
FrederictonRASC Moncton Centre, William Brydone Jack Unit  
HamptonHampton Astronomy Club  
ShippaganClub d'astronomie de la Péninsule acadienne  
Various in NBRASC Moncton Centre  


St. JohnsRASC -- St. John's Centre

Nova Scotia

HalifaxRASC -- Halifax Centre
WolfvilleMinas Astronomy Group26

Sydney RiverCape Breton Astronomical Society  


HamiltonHamilton Amateur Astronomers80

KingstonRASC -- Kingston Centre

Kitchener/WaterlooRASC -- Kitchener-Waterloo Centre

LondonRASC -- London Centre120

LondonSt.Marys Astronomy Club12
MiltonRASC -- Hamilton Centre

MooretownRASC -- Sarnia Centre
Niagara FallsRASC -- Niagara Centre

North BayNorth Bay Astronomy Club
OshawaDurham Region Astronomical Association

OttawaOttawa Valley Astronomy and Observers Group

OttawaRASC -- Ottawa Centre

PeterboroughPeterborough Astronomical Association

RuthvenRASC -- Windsor Centre
SudburySudbury Astronomy Club30
Thunder BayRASC -- Thunder Bay Centre40

TorontoAstronomy and Space Exploration Society (U of T)1200
TorontoNorth York Astronomical Association
TorontoRASC -- Toronto Centre

YorkYork University Astronomy Club 
Deep RiverDeep River Astronomy Club 
ManitoulinManitoulin Island Dark Sky Association  
Port ElginBruce County Astronomical Society  
Thunder BayThunder Bay Asronomy Group  
Thunder BayThunder Bay Observatory 

Prince Edward Island

CharlottetownRASC -- Charlottetown Centre


BeloeilClub d'Astronomie de Beloeil
Cap-RougeClub d'astronomie VÉGA de Cap-Rouge
Centre-MauricieClub des Astronomes Amateurs Centre-Mauricie
DorvalClub d'Astronomie de Dorval50
DrummondvilleClub d'Astronomie Drummondville, Inc.
LavalClub des Astronomes Amateurs de Laval
LévisClub d'Astronomie du CEGEP Lévis-Lauzon
LongueuilClub des Astronomes Amateurs de Longueuil
MontréalGroupe Astro & CCD37
MontréalLa Société d'Astronomie de Montréal100
MontréalRASC -- Montréal Centre
Pierre-de-CoubertinFédération des Astronomes Amateurs du Québec
QuébecRASC -- Québec Centre
RimouskiClub d'Astronomie de l'U. du Québec a Rimouski
SaguenayClub d'Astronomie Sirius
SherbrookeClub des Astronomes Amateurs de Sherbrooke
SilleryClub d'astronomie Cassiopée de Sillery
Trois-Riviegrave;resClub d'Astronomie Jupiter, Inc.
ValleyfieldClub d'Astronomie Orion de Saint-Timothée


ReginaRASC -- Regina Centre
SaskatoonRASC -- Saskatoon Centre



CastriesSt.Lucia Royal Astronomy Club50


Czech Republic

PragueCzech Astronomical Society


NürnbergNürnberger Astronomische Arbeitsgeminschaft
TübingenInstitut für Astronomie und Astrophysik


LimerickShannonside Astronomy50
TullamoreTullamore Astronomical Society


MilanCircolo Astrofili Astrum Caeli17



San Luis PotosíSociedad Astronómica Julieta Fierro Gossman30



Royal Astronomical Society of New Zealand


AshburtonCanterbury Astronomical Society, Ashburton Branch
ChristchurchCanterbury Astronomical Society

South Auckland

AucklandAuckland Astronomical Society600


InvercargillSouthland Astronomical Society


New PlymouthNew Plymouth Astronomical Society


WellingtonPhoenix Astronomical Society
WellingtonWellington Astronomical Society



Telescope Group10



ValparaísoSociedad Astronómica de Valparaíso y Viña del Mar.


Western Province

ColomboIYA 2009 Sri Lanka55




AbingdonAbingdon Astronomical Society70
Barrow-in-FurnessFurness & South Lakeland Astronomical Society15
BatleyBatley & Spenborough Astronomical Society
BedfordBedford Astronomical Society
BingleyHebden Bridge Astronomy Society
BirminghamHeart of England Astronomical Society
BlackpoolBlackpool & District Astronomical Society
Bognor RegisSouth Downs Astronomical Society
BoltonBolton Astronomical Society
BracknellHerschel Astronomical Society
BradfordBradford Astronomical Society70
BridgwaterBridgwater Astronomical Society20
BrightonBrighton and Hove Astronomical Society
BristolBristol Astronomical Society
BurghfieldNewbury Amateur Astronomical Society
CambridgeCambridge Astronomical Association1000

ChathamMid-Kent Astronomical Society
ChesterfieldChesterfield Astronomical Society
ChichesterSouthern Area Group of Astronomical Societies
Clacton on SeaClacton & District Astronomical Association
ClevelandCleveland & Darlington Astronomical Society
CondoverShropshire Astronomical Society
CoventryCoventry & Warwickshire Astronomical Society
CrayfordCrayford Manor House Astronomical Society
CroydonCroydon Astronomical Society80
DerbyDerby & District Astronomical Society
Durham CityDurham University Astronomical Society
EastbourneEastbourne Astronomical Society
ElloughtonEast Riding Astronomers36
ExeterExeter Astronomical Society
FarnhamFarnham Astronomical Society
FolkestoneSouth East Kent Astronomical Society
GatleyAltrincham & District Astronomical Society
GiltbrookNottingham Astronomical Society
GuildfordGuildford Astronomical Society
HampshireHampshire Astronomical Group130
HooleChester Astronomical Society
HorshamHorsham Astronomy Group
HuddersfieldHuddersfield Astronomical & Philosophical Society
IpswichOrwell Astronomical Society
IpswichOrwell Astronomical Society (Ipswich)
LancasterLancaster & Morecambe Astronomical Society
LeedsLeeds Astronomical Society40
LeicesterLeicester University Astronomical Society
LetchworthLetchworth & District Astronomical Society
LincolnLincoln Astronomical Society45
LiverpoolLiverpool Astronomical Society
LondonBritish Astronomical Association
LondonSociety for Popular Astronomy
MaidenheadMaidenhead Astronomical Society
ManchesterManchester Astronomical Society
MexboroughMexborough & Swinton Astronomical Society
Milton KeynesMilton Keynes Astronomical Society30
Newcastle-Under-LymeNorth Staffordshire Astronomical Society
North CornellyFederation of Astronomical Societies
North DevonNorth Devon Astronomical Society
North West LondonSouth West Herts Astronomical Society
NorthamptonNorthamptonshire Natural History Society, Astronom
NorwichBreckland Astronomical Society
NorwichNorwich Astronomical Society140
NottinghamIlkeston & District Astronomical Society
NottinghamshireMansfield & Sutton Astronomical Society
OrpingtonOrpington Astronomical Society
PeterboroughPeterborough Astronomical Society
PlymouthPlymouth Astronomical Society40
PontefractWest Yorkshire Astronomical Society
RayleighCastle Point Astronomical Club
SaleMacclesfield Astronomical Society
ShinfieldReading Astronomical Society
ShirleySouthampton Astronomical Society
SpaldingSouth Lincolnshire Astronomical & Geophysical Soci40
SunderlandSunderland Astronomical Society
SuttonBirmingham Astronomical Society
ThameAylesbury Astronomical Society
Theydon BoisLoughton Astronomical Society
WellingboroughNorthants Amateur Astronomers
West EwellEwell Astronomical Society
WhittingtonWelsh Border Astronomers
WithamNorth Essex Astronomical Society
WorcesterWorcester Astronomical Society
WorthingWorthing Astronomers80 +

Wrea GreenPreston & District Astronomical Society
WycombeWycombe Astronomical Society
YorkYork Astronomical Society

Island of Guernsey

St Peter PortGuernsey Astronomy Society60

Isle of Man

PeelIsle of Man Astronomical Society


AberdeenAberdeen & District Astronomical Society
DundeeDundee Astronomical Society
DunfermlineDunfermline Astronomical Society70
EdinburghAstronomical Society of Edinburgh
GlasgowAstronomical Society of Glasgow

InvernessHighland Astronomical Society76


CardiffCardiff Astronomical Society250
GowertonSwansea Astronomical Society
LlanrugGwynedd Astronomical Society
LlanrugNorthwest Group of Astronomical Societies


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