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  2. Amateur astronomy - Wikipedia

    en.wikipedia.org/wiki/Amateur_astronomy

    Amateur astronomy groups are often involved in outreach to introduce astronomy to the general public. There are a large number of amateur astronomical societies around the world, that serve as a meeting point for those interested in amateur astronomy. Members range from active observers with their own equipment to "armchair astronomers" who are ...

  3. List of astronomical societies - Wikipedia

    en.wikipedia.org/wiki/List_of_astronomical_societies

    List of Local Astronomy Clubs In the United States: [1] Society Name City State Address Website Facebook Page AL Member Auburn Astronomical Society

  4. Category:Amateur astronomy - Wikipedia

    en.wikipedia.org/wiki/Category:Amateur_astronomy

    Amateur astronomy organizations (58 P) S. Star parties (8 P) Pages in category "Amateur astronomy" The following 37 pages are in this category, out of 37 total.

  5. Astronomical League - Wikipedia

    en.wikipedia.org/wiki/Astronomical_League

    The Astronomical League is an umbrella organization of amateur astronomy societies. [1] Currently their membership consists of over 330 [2] organizations across the United States, along with a number of Members-at-Large, Patrons, and Supporting members.

  6. Bortle scale - Wikipedia

    en.wikipedia.org/wiki/Bortle_scale

    Representation of the Bortle scale. The Bortle dark-sky scale (usually referred to as simply the Bortle scale) is a nine-level numeric scale that measures the night sky's brightness of a particular location.

  7. American Association of Variable Star Observers - Wikipedia

    en.wikipedia.org/wiki/American_Association_of...

    Hence, astronomy is one of the few sciences where amateurs can make significant contributions to research. [2] In 2011, the 100th year of the AAVSO's existence, the twenty-millionth variable star observation was received into their database. [3] The AAVSO International Database (AID) has stored over thirty-five million observations as of 2019. [4]

  8. Stellafane - Wikipedia

    en.wikipedia.org/wiki/Stellafane

    It has since become Thousands of amateur telescope makers from all over the world gather to share their innovations, join in competitions, and enjoy the night sky. The convention is generally held over the weekend of the new moon closest to the height of the Perseid meteor shower , usually in early August.

  9. File:Map of Roblox restrictions by country.svg - Wikipedia

    en.wikipedia.org/wiki/File:Map_of_Roblox...

    This map is ineligible for copyright and therefore in the public domain, because it consists entirely of information that is common property and contains no original authorship. For more information, see Commons:Threshold of originality § Maps .