 Bruce County Astronomical Society
 - Find out about what's going on inside the club and the world of astronomy. Read the newsletter Sky Focus to find out about specific topics in astronomy.- Hamilton Amateur Astronomers
- Group of individuals dedicated to the enjoyment and advancement of astronomy in Canada.
- Lethbridge Astronomy Society
- Individuals from all walks of life who share an interest in astronomy and space science.
- North Bay Astronomy Club
- Hosts a variety of activities that include monthly meetings, community star parties, public education, and recreational star gazing.
- Sarnia Centre - Royal Astronomical Society of Canada
- Holds meetings and provides information of interest to astronomers; interested in planets, eclipses and stars.
- Alachua Astronomy Club
- An informal group of people who enjoy looking at stars and planets, and who love to communicate their excitement about the heavens to others.
- Aldrich Astronomical Society
- Central Massachusetts-based organization of amateur astronomers who have united to promote their mutual interest in observational astronomy and telescope making. Meets biweekly.
- Amateur Astronomer's Association of Princeton
- Enthusiasm for observational astronomy, curiosity about the solar system, amd a fascination for CCD imaging and processing.
- Amateur Astronomers Association of New York
- Produces a monthly newsletter, Eyepiece, containing several articles of interest.
- Amateur Astronomers Association of Pittsburgh
- Promoting popular astronomy in western Pennsylvania.
- Amateur Observer's Society of New York
- Created in order to bring together astronomy enthusiasts and people of all ages who enjoy sharing their fascination with anything related to astronomy.
- Amateur Telescope Makers of Boston
- Membership is open to all those interested in pursuing astronomy as a hobby.
- Ames Area Amateur Astronomers
- Nonprofit educational and scientific organization holding viewing nights at their observatory at McFarland Park and at members' homes.
- Amherst Astronomy Association
- Free public programs, planetarium shows, solar and sunset observing, astronomy classes, and public and school outreach.
- Anglo-Chinese School (I) Astronomy Club
- Activities, club members listing, links, and more.
- Anteleope Valley Astronomy Club
- Founded in 1982 to bring the beauty of the night sky to the families of the Antelope Valley.
- Antique Telescope Society
- An international organization of colleagues who are interested in antique astronomical telescopes,books, binoculars, and related materials.
- Association of Lunar & Planetary Observers@
- Aster Agrupació Astronòmica de Barcelona
- Efemèrides, enllaços, programes d'observació. Site is in Catalan, Spanish and English.
- Astronomical Association of Northern California
- Group of Northern California astronomy clubs banded together to promote astronomy and space science through conferences and communication.
- Astronomical League
- Confederation of U.S. astronomical societies inviting you to browse their information on astronomy and astronomical societies.
- Astronomical Society of Augsburg
- Information about our society and our observatory; links of astronomical interest
- Astronomical Society of Edinburgh
- Runs the City Observatory at the Calton Hill (10 minutes walk from Princes Street).
- Astronomical Society of Flinders University (AstroSoc)
- Includes an image gallery, list of coming events, and information about the society.
- Astronomical Society of Frankston, The
- Contains information about activities, membership, and more.
- Astronomical Society of Long Island (ASLI)
- Holding meet three times a month on Wednesdays at the New York Institute of Technology and once a month (near the new moon) at the Vanderbilt Planetarium for observing sessions.
- Astronomical Society Of Nevada
- With members in northern Nevada and eastern California hosting star parties and many other astronomy-related activities.
- Astronomical Society of New Haven
- Scientific and educational organization which fosters continuing interest in amateur astronomy.
- Astronomical Society of New South Wales, Inc
- Provides observing facilities for members and educational lectures for members and the public. Also assists in the construction, selection, and use of telescopes.
- Astronomical Society of South Australia
- Information about the society, its history and present day activities including dates of meetings and viewing nights.
- Astronomical Society of Southern Africa (ASSA)
- Consisting of both amateur and professional astronomers, its membership is open to all interested persons, regardless of knowledge or experience.
- Astronomical Society of Southern Africa - Pretoria Centre
- Meeting and informal practical observing sessions schedules.
- Astronomical Society of Southern Africa - Durban Centre
- Members, events, and meetings information and newsletter.
- Astronomy Club HKUSU
- Established in Hong Kong, providing activities for students and the public.
- Astronomy Club, The (TAC)
- Informal group of active, observational amateur astronomers serving as a resource for the public and other clubs.
- Astronomy Ireland
- General interest Astronomy club and magazine with a distinctly Irish flavour.
- Atlanta Astronomy Club
- Inlcudes weather, details of meetings, news, directions, and photo gallery.
- Auburn Astronomical Society
- In central Alabama.
- Austin Astronomical Society
- Founded in August 1969 by Austin residents and University of Texas students interested in astronomy and space sciences.
- Baltimore Astronomical Society
- Founded 1881. Meets at Maryland Science Centre in Balitimore second Tuesday of every month at 7:30 pm.
- Battle Point Astronomical Association
- Nonprofit amateur astronomy organization located in Bainbridge Island, Washington.
- Berks County Amateur Astronomical Society
- Club activities and schedules with links to surrounding Astronomy club sites.
- Boise Astronomical Society
- Nonprofit educational and scientific organization dedicated to bringing the hobby of amateur astronomy to the community.
- Boston University Astronomical Society
- Meets every Sunday evening at 7:30 p.m. in the J.B. Coit Observatory and during special events such as a lunar eclipse or meteor shower.
- Bristol Astronomical Society
- Includes a programme of events and membership information.
- British Astronomical Association@
- Calumet Astronomical Society
- Constellation of the month, gallery, and virtual star party.
- Canberra Astronomical Society
- Sharing the wonders of the night sky with telescopes, guest speakers and much more.
- Castle Point Astronomy Club
- Amateur astronomy club in South-East Essex.
- Cedar Amateur Astronomers
- Family oriented, nonprofit group dedicated to showing the science and wonder of astronomy to Cedar Rapids and the surrounding communities.
- Central Arkansas Astronomical Society (CASS)
- Amateur astronomy club that manages the River Ridge Observatory in central Arkansas. They also provide astronomy education programs and observing outings to school groups and the general public.
- Central Florida Astronomical Society
- Private, nonprofit, scientific organization chartered by the State of Florida dedicated to the advancement of astronomy for scientific and recreational purposes.
- Central Valley Astronomers
- Group of astronomy enthusiasts located in the Fresno area of Central California.
- Champaign Urbana Astronomical Society
- Devoted to the promotion of astronomy and enjoyment of the night skys.
- Chapel Hill Astronomical and Observational Society
- Includes their observing sessions schedule and astro images taken by their members.
- Charlotte Amateur Astronomers Club
- Dedicated to the advancement of the general knowledge of astronomy.
- Charlottesville Astronomical Society
- Promoting the enjoyment of astronomical observing and learning in the Central Virginia area.
- Chesmont Astronomical Society
- Regional astronomy club with members in Chester, Berks, and Montgomery Counties.
- Chicago Astronomical Society
- Educationally-oriented and supports advancement in the science of astronomy and astrophysics.
- Chippewa Valley Astronomical Society
- Amateur astronomy club in Wisconsin's Chippewa Valley. Covers a broad spectrum of astronomical interests from casual observing of the constellations to serious visual observing, astrophotography, astrometry, CCD imaging, computer control of telescopes, photometry, telescope building, and radio astronomy.
- Cincinnati Astronomical Society (CAS)
- Photo gallery, newsletter archive, calendar of events, history, and instrument information.
- Colorado Springs Astronomical Society (CSAS)
- Meets regularly to observe the splendors of the dark, dry, and high Colorado skies.
- Cork Astronomy Club
- Meets usually on first Monday of the month in the Civil Engineering Dept. UCC. and Friday nights at club the telescope site.
- Denver Astronomical Society
- Group of amateur and professional astronomers that share a mutual interest in the heavens. Operates the University of Denver's historic Chamberlin Observatory.
- Eastbay Astronomical Society
- Stargazing since 1924 at the Chabot Space and Science Centre. Programs include star parties, monthly meetings with featured guest speakers, workshops, advanced astro-research groups, and more.
- Eastern Michigan University Astronomy Club
- Student organization devoted to the study and enjoyment of astronomy.
- Escambia Amateur Astronomers' Association
- Educational information and images for anyone interested in amateur astronomy.
- Eugene Astronomical Society
- Features information on upcoming events and meetings, as well as offering a newsletter and mailing list.
- Forsyth Astronomical Society
- Promotes the hobby and science of astronomy.
- Fremont Peak Observatory Association
- Offering interpretive astronomy, viewing, and educational programs to the public from April through October. Members may operate the 30" Challenger telescope.
- Gibraltar Astronomical Society
- With local events, news items of interest to amateur astronomers, and a guide to the night sky.
- Grand Rapids Amateur Astronomical Association
- Features photos by members, and visitor and membership information.
- Grand Strand Skygazers (GSS)
- Amateur astronomy club serving eastern South Carolina. Offers public meetings, star parties, telescope information, and photo galleries.
- Great Western Astronomer
- Conductes public and private star parties, telescope workshops, and sky tours in Nevada and the Eastern slope of the Sierras.
- Greater Ocala Astronomy Club
- Promoting education and interest in the science of astronomy.
- Halls Valley Astronomical Group
- Providing astronomical interpretation free of charge to the public at Grant County Park.
- Heart of the Valley Astronomers
- Nonprofit organization with a dedicated group of individuals that have a love for the night sky, located in Oregon's Willamette Valley.
- Houston Astronomical Society
- Information about the society, its members, its observatory, and projects that the members participate in including CCD imaging, astrophotography and telescope making.
- Huddersfield Astronomical Society
- Astronomical society based in Huddersfield, England with a 16" Newtonian telescope installed in a remote observatory.
- Kansas Astronomical Observers
- Amateur club that builds telescopes, observes the planets and deep sky, practices astrophotography, holds star parties, and helps people new to the hobby.
- Kentwood Amateur Astronomy League (KAAL)
- Dedicated to helping people advance their knowledge of astronomy through training sessions, observing, and interaction with others who are doing the same.
- Khagol Mandal
- Association of amateur astronomers and skygazers with branches through out the state of Maharashtra.
- Laramie Astronomical Society & Space Observers (LASSO)
- A place for novice observers and professional astronomers a like.
- Lehigh Valley Amateur Astronomical Society (LVAAS)
- An educational organization dedicated to promoting astronomy and amateur stargazing.
- Local Group, The
- Astronomy club that provides volunteer speakers and telescopes for science nights and similar events in the Santa Clarita Valley.
- Longmont Astronomical Society
- Activities include lectures on various astronomical topics and related space sciences at local schools as well as monthly public observing sessions and meetings featuring speakers.
- Louisville Astronomical Society
- Established for amateur astronomers and public education.
- Macclesfield Astronomical Society
- Working to make astronomy accessible to the general public, they meet twice a month for a workshop and a main lecture.
- Manchester Astronomical Society (MAS)
- Claims to have the longest continuous history of any provincial astronomical society in England.
- Mattatuck Astronomical Society
- Devoted to the science of astronomy in Waterbury, Connecticut since 1986
- Miami Valley Astronomical Society
- Dedicated to furthering the knowledge and enjoyment of Astronomy in the Dayton, Ohio, area.
- Mid-Hudson Astronomy Association
- Astronomy club for the Mid-Hudson Valley area of southeast New York state. about 100 members. outdoor and indoor meetings, all ages and levels of expertise welcome.
- Minnesota Astronomical Society
- Founded in 1972, promotes amateur astronomy and astronomy education.
- Mountain Skies Astronomical Society
- Educates K-12 and the general public.
- Muskegon Astronomical Society - Michigan
- Discussion forums, links to resources, member astrophotography and articles.
- Naperville Astronomical Association
- Astronomy club for southwest suburban Chicagoland. Free public meetings and stargazing from our observatory.
- National University of Singapore Astronomical Society
- Site includes sky calendar, logs, downloads, and more.
- New Hampshire Astronomical Society
- Offers public observing sessions, demonstrations, astronomical slide shows, discussions, and talks.
- New Jersey Astronomical Association
- Dedicated to the education of anyone interested in the wonders of the night sky.
- Nightquest Astronomical Society
- Amateur astronomy club located in Central Minnesota.
- North Jersey Astronomical Group
- Group in Upper Montclair, NJ, interested in all aspects of stargazing.
- North Shore Amateur Astronomy Club
- Serving the Massachusetts North Shore area with a kickin' newsletter, university observatory access, and other nifty treats.
- North West Group of Astronomical Societies (NWGAS)
- Information on a number of astronomical societies in the north west of England and north Wales area.
- Northamptonshire Natural History Society and Field Club (NNHS)
- Archaeology, astronomy, botany, and microscopy sections.
- Northeast Kansas Amateur Astronomers' League
- NEKAAL is a nonprofit organization which owns and operates Farpoint Observatory.
- Northern Colorado Astronomical society
- Astronomical and society current events, images taken by members, a deep sky journey of interesting objects, and the societies monthly newsletter.
- Northern Cross Science Foundation
- Amateur astronomy club based in Wisconsin.
- Northern Virginia Astronomy Club (NOVAC)
- Offers membership, monthly meeting, event, and library information.
- Observatorio Arval
- Bilingual astronomical information (Spanish-English).
- Oklahoma City Astronomy Club
- Provides educational opportunities to the public in the sciences and academics.
- Olympus Mons: The Astronomy Society at the University of Texas at Arlington@
- Omaha Astronomical Society
- A nonprofit organization dedicated to promoting Astronomy, the education of the public and is open to anyone interested.
- Orange County Astronomers
- Amateur astronomy club for all levels of interest and capability.
- Orange County Astronomical Association (OCAA)
- Serves all communities in Orange County, New York, and places an emphasis on observational astronomy, family participation, and public enjoyment of the wonders of the starry night.
- Pajarito Astromoners
- Amateur astronomy club based in Los Alamos and serving northern New Mexico.
- Penn State Astronomy Club
- Club history, calendars of events, and an astrophotography gallery.
- Peoria Astronomical Society
- Meets the first Wednesday of each month to swap stories, meet members, and learn a little more about astronomy.
- Polaris Observatory Association
- Association with private observatory and thirty inch telescope.
- Prairie Astronomy Club
- Members have a wide variety of interests ranging from simple naked-eye sky gazing to deep-sky objects, variable star observing, and the use of computers.
- Princeton Planetary Society
- Student organization for anyone who is interested in astronomy or space-related topics.
- Raleigh Astronomy Club
- Educator and promoter of amateur astronomy to the public.
- Riverside Astronomical Society
- Bringing the joys of astronomy to the public.
- Rochester's Astronomy Club
- Dedicated and active organization devoted to promoting and enjoying the hobby of amateur astronomy.
- Roper Mountain Astronomers
- Amateur astronomers in Greenville, South Carolina.
- Rose City Astronomers
- Amateur astronomy club serving Portland, Oregon, with meetings and star parties open to everyone.
- Sacramento Valley Astronomical Society
- Nonprofit educational society whose primary goal is to foster community interest in astronomy.
- San Antonio Astronomical Association
- Nonprofit organization dedicated to the advancement of astronomy, science, and education.
- San Antonio Astronomical Observing Group
- Holds occasional observing sessions and meets on a monthly basis to discuss current astronomy events.
- San Diego Astronomy Association (SDAA)
- Dedicated to amateur astronomy.
- San Francisco Sidewalk Astronomers
- Presenting "urban guerilla astronomy" in which the astronomers stop people on the sidewalk and show them the wonders of the universe all around, including telescope clinics and more.
- San Jose Astronomical Association (SJAA)
- Programs include a monthly in-town star party, guest speakers at general meetings, and introductory courses on observing.
- San Mateo County Astronomical Society
- A club for hobbyists and families, bringing astronomy to the community through public programs and stargazing.
- Santa Barbara Astronomical Unit
- Club composed of people who share an interest in astronomy sponsored by the Santa Barbara Museum of Natural History (SBMNH).
- Santa Cruz Astronomy Club - California
- With membership and meeting information, newsletter, notes on upcoming public viewings, and more.
- Seattle Astronomical Society
- Created and sustained by people who share a common interest in the observational, educational, and social aspects of amateur astronomy.
- Shreveport-Bossier Astronomical Society
- Founded in 1959, the SBAS is a nonprofit organization that promotes amateur astronomy and astronomy education.
- Sidewalk Astronomers San Francisco
- Devoted to the encouragement of public astronomy with tips, information, and links geared to the astro-interested beginner.
- Sioux Empire Astronomy Club
- Located in Sioux Falls, South Dakota, they are a group that is interested in Astronomy and teaching elementary students the basics of astronomy.
- Skokie Valley Astronomers - Skokie, IL
- Club serving the Northern suburbs of Chicago.
- Skyscrapers, Inc.
- Monthly meetings on the first Friday of each month, public observing every clear Saturday night, and host of the annual AstroAssembly convention at Seagrave Observatory.
- Smoky Mountain Astronomical Society
- Deep sky help and charts, and everything that is astronomical.
- Societe Astronomique de Liege (SAL)
- Conference, bibliotheque observation, bulletin mensuel .
- Sonoma County Astronomical Society
- Organization for those interested in astronomy and telescope making, with meetings for lectures, demonstrations, star parties and more.
- South East Queensland Astronomical Society
- Located in Queensland, Australia, the society consists of a group of amateur astronomers who get together and share their views, ideas, and telescopes with friends and fellow members.
- South Shore Astronomical Society
- Hosts a range of activities for children and adults.
- Southeast Iowa Astronomy Club
- Contains information on the John H. Witte Observatory, events calendar, and more.
- Southern Astronomical Society (SAS)
- Amateur astronomy club serving Brisbane, Gold Coast, and East Queensland enthusiasts.
- Southern Cross Astronomical Society (SCAS)
- Founded in 1922.
- Springfield Stars Club
- Public observing sessions at the Springfield Science Museum, Korkosz Award, Arunah Hill dark-sky observing.
- Squak Mountain Telescope Gang
- Unorganized (but not disorganized) group of amateur astronomers sited somewhere around Issaquah, Washington.
- St. Louis Astronomical Society
- Educational material and information.
- STAR Astronomy Club
- Amateur astronomy club.
- Stars and Coffee
- Offers the opportunity to learn about the telescope of an ametuer astronomy group in Kalgoorlie. Site features unique perspectives on aliens and the zodiac.
- Stockton Astronomical Society
- Meets at Clever Planetarium for sky tours and monthly star parties. Site includes news links for adults and game links for kids.
- Swansea Astronomical Society
- Astronomical images, history, and general interest.
- Syracuse Astronomical Society
- Amateur astronomy in central New York. Information on club meetings and events. Meetings are free and open to the public.
- Tallahassee Astronomical Society
- A group of friendly people who have a common interest in astronomy and wish to share that interest with the general public.
- Tiverton Astronomy Society
- Local astronomy club site featuring a big section on the Solar System.
- Torbay Astronomical Society
- Group of people of all ages and from all walks of life bound together by a common interest in astronomy.
- Tri-Valley Stargazers Astronomy Club
- Robotic solar observatory, dark site/observatory, rental telescopes, star parties, great speakers, newsletter, and more.
- TriState Astronomers, The
- Observing in Maryland, Pennsylvania, and West Virginia.
- UC Davis Astronomy Club
- Public viewings, star parties, and other fun events.
- University Lowbrow Astronomers
- Amateur astronomy club based in Ann Arbor, Michigan presents open houses, an observer's guide, and selected newsletter articles.
- University of Chicago - Ryerson Astronomical Society
- Encouraging all humanity to behold the celestial luminaries in hushed awe.
- University of Illinois Astronomical Society
- Educating students of the university and members of the community about the wonders of astronomy.
- University of Michigan - Student Astronomical Society
- Educates students and the public about astronomy, brings together undergraduate astronomy majors, professors, and research opportunities, and furthers the interests of individuals who are not astronomy majors.
- Ventura County Astronomical Society
- Nonprofit astronomy club with members from the Ventura and Los Angeles areas. Offers monthly meetings, a chat room, star parties, and more.
- Warren Astronomical Society
- Organization of amateur astronomers.
- West of London Astronomical Society
- Amateur astronomy society meeting in Uxbridge and Wealdstone.
- Westminster Astronomical Society
- Amateur astronomy club located in Westminster, MD, serving the greater central Maryland and south-central Pennsylvania region.
- Wilderness Center Astronomy Club (WCAC)
- Offers information about the local planetarium, research and family programs, online tutorials, and more.
- Wycombe Astronomical Society
- Amateur astronomy society for all ages and all levels of expertise.
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