Weather:

• Met Eireann
• Space Weather
• Weather Satellite Image Ireland & NW Europe from British Met Office

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Journals and Magazines:

• Amateur Astronomy from USA
• Astronomy Magazine from USA
• Astronomy Now from England
• Ciel & Space from France
• Practical Astronomer from England
• Sky & Telescope from USA
• Sky at Night from England

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Book Publishers:

• Cambridge University Press
• Oxford University Press
• Springer
• Wiley
• Willmann-Bell

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Observing:

• The Astronomer
• Asteroid Occultations by Ludek Vasta and Jan Manek
• AAVSO Solar Division
• Atmospheric Phenomena by Pekka Parviainen
• Auroral Activity from NOAA POES
• Visual Observing by R.Clark
• Digitised Sky Survey from ESO
• International Meteor Organization
• The NGC/IC Project
• International Supernova Network
• Webb Deep-Sky Society Deep Sky Observing

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Organisations:

• A.A.V.S.O. Variable Star Observing
• Center for Backyard Astrophysics
• Bradford Robotic Telescope
• Association of Lunar and Planetary Observers
• International Occultation Timing Association
• Irish Light Pollution Awareness Campaign
• Society of Amateur Radio Astronomers based in USA

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Imaging:

• AIP Image Processing
• Astroart Image Processing/Control
• Atik Instruments CCD Cameras
• CCDSoft Control/Image Processing
• DSLR Focus
• Images Plus Control/Image Processing
• Imaging Source Cameras
• IRIS Image Processing/Control
• MaxIm Image Processing/Control
• Mira Image Processing
• New CCD Astronomy
• SBIG CCD Cameras
• RegiStax Stacking Webcam images

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Eclipses:

• Total Solar Eclipses from the I.A.S.
• Annular & Partial Solar Eclipses from the I.A.S.
• Solar Eclipses Fred Espenak
• Total Solar Eclipses by Wendy Carlos

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Equipment:

• Small Ads from IAS members
• Baader Planetarium
• Equatorial Platforms manufacturer
• Kendrick Dew Removers etc.
• Howie Glatter Collimators
• Lumicon International Filters etc.
• Novosibirsk Instrument-Making Plant TAL Telescopes etc
• Rainbow Optics Spectroscopes
• Lumicon International Filters etc.
• Thousand Oaks Optical Filters

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Retailers:

• Adirondack New York, USA
• Aurora Books York, England
• Camera Concepts New York, USA
• Earth and Sky (books) England
• Green-Witch Telescopes etc., Cambridgeshire, England
• Hands-On Optics Telescopes etc., Maryland, USA
• High Point Scientific New Jersey, USA
• North Down Telescopes Bangor, Co.Down
• Optique et Vision Juan Les Pins, France
• SCS Astro Somerset, England
• True Technology England
• Venturescope England

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Software:

• EasySky Planetarium/Star Charting
• Guide Star Charting
• GraphDark Observing Planner
• Hallo Northern Sky Planetarium/Star Charting
• SkyMap Pro Star Charting
• SkyTools Tools
• Traksat Satellite Tracking
• Virtual Moon Atlas
• XEphem Ephemeris Tool

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Irish Sites:

• DIAS -- Dunsink Observatory
• Armagh Observatory
• Armagh Planetarium
• Astronomical Science Group of Ireland
• Blackrock Castle Observatory Cork City
• "Ecliptomaniacs" a group of eclipse chasers
• IFAS Irish Federation of Astronomy Societies
• Inishowen Maritime Museum & Planetarium Greencastle, Co. Donegal
• International Year of Astronomy 2009 Irish site
• Irish Meteorological Society
• Irish Science Centre Awareness Network
• QUB Astrophysics Research Centre Belfast
• Schull Planetarium Co. Cork
• UCC Astrophysics and Astronomy Cork
• Wicklow Mountains National Park (recent IAS public stargazing)

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World Sites:

• Astronomers Without Borders
• Institute of Astronomy Cambridge, England
• Instituto de Astrofísica de Canarias
• Royal Observatory Edinburgh
• European Southern Observatory
• Royal Observatory Greenwich
• Jodrell Bank Observatory Cheshire, England
• Kitt Peak National Observatory
• L'Observatoire du Pic du Midi de Bigorre
• Mauna Kea Observatories Hawaii
• National Radio Astronomy Observatory USA
• Old Town Sidewalk Astronomers
• Sidewalk Astronomers
• Parkes Observatory The Radio "Dish"
• Very Large Array radio telescope in New Mexico
• Warren Rupp Observatory

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Societies around the Country:

• Irish Astronomical Society Ireland's Oldest Astronomical Society (Founded 1937)
• Deise Astronomy Society Waterford
• Astro2 Society of NUI Maynooth, Co Kildare
• Midlands Astronomy Club Tullamore
• Galway Astronomy Club
• Irish Astronomical Association based in Belfast
• Northern Ireland Amateur Astronomy Society
• Shannonside Astronomy Club Limerick
• South Dublin Astronomical Society

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Societies around Europe:

• Irish Astronomical Society Ireland's Oldest Astronomical Society (Founded 1937)
• British Astronomical Association
• Société Astronomique de France
• UAI - Unione Astrofili Italiani
• Manchester Astronomical Society
• Society for Popular Astronomy based in England
• Agrupación Astronómica de Sabadell
• WOLAS West of London Astronomical Society

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Societies around the World:

• International Dark-Sky Association
• The Astronomical Society of the Pacific
• Astronomical League in USA

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Education:

• Project CLEA Laboratory Experiences from Gettysburg College
• Deirdre Kelleghan's personal site
• Faulkes Telescope Project
• Hands on Astrophysics from the A.A.V.S.O.
• Universe in the Classroom from A.S.P.
• Liverpool John Moores University Astronomy by Distance Learning
• Centre for Astrophysics Preston, England

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Travel:

• Explorers Tours Eclipse Trips etc
• Jack Newton's Astro B&B in Canada
• TravelQuest International Eclipse Trips etc

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Star Parties:

• Cosmos near Tullamore, Co Offaly
• Galway Astronomy Festival Galway City
• RTMC Big Bear, California, USA
• Whirlpool Birr, Co Offaly

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Space:

• European Space Agency
• Heavens Above Artificial Satellite positions
• ISAS in Japan
• Indian Space Research Organisation
• Jet Propulsion Laboratory in Pasadena
• Jonathan's Space
• British National Space Centre Leicester
• Spaceflight Now news
• Space Research Institute (IKI) in Russia

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Solar System Exploration:

• Cassini at Saturn
• Chrandrayaan 1 ISRO Lunar Orbiter
• Dawn Ceres & Vesta
• Kaguya JAXA Lunar Orbiter
• Mars Exploration Rovers Spirit and Opportunity
• Mars Express ESA Mars Orbiter
• Mars Renaissance Orbiter
• Mars Odyssey
• Mars Phoenix
• MESSENGER Mercury Mission
• New Horizons Pluto and other Kuiper Belt Objects
• Rosetta ESA Comet Lander
• Venus Express ESA Venus Orbiter

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Space Observatories:

• Chandra X-ray Observatory
• COROT CNES
• Fermi Gamma-Ray Observatory
• GALEX UV observations of Galaxies
• INTEGRAL ESA Gamma-Ray Observatory
• Kepler Photometry
• Spitzer Infra-Red Observatory
• SOHO Solar and Heliospheric Observatory
• Hubble Space Telescope Science Institute
• STEREO Solar Observatories
• Swift Gamma-Ray Bursts
• WMAP Cosmic Background Radiation
• XMM-Newton ESA X-ray Observatory

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Historical:

• Birr Castle Demesne
• William Herschel Society
• Society for the History of Astronomy in Britain & Ireland