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- Orange_County_Astronomers abstract "Orange County Astronomers (OCA) started life in 1967 when a small group of intrepid amateur astronomers got together to form a club. Those were the days when an amateur built his own telescope, usually a Newtonian reflector. It was a laborious process of grinding a mirror to as close to a 1/4 wave as you could get. Then you built the tube and assembly so you could actually search out a dark patch of sky to look up at the stars. It helped to know about stepping motors and who was building the best drives to keep your telescope tracking your object. And that was another thing – you had to get on intimate terms with the night skies for all seasons. That was a daunting task for many and proved to be a barrier to many but the most dedicated observer.".
- Orange_County_Astronomers thumbnail OCA_General_Meeting_April_2006.jpg?width=300.
- Orange_County_Astronomers wikiPageExternalLink ocastronomers.
- Orange_County_Astronomers wikiPageExternalLink www.ocastronomers.org.
- Orange_County_Astronomers wikiPageExternalLink +OCAstronomersOrganization.
- Orange_County_Astronomers wikiPageExternalLink OCAstronomers.
- Orange_County_Astronomers wikiPageExternalLink OrangeCountyAstronomers.
- Orange_County_Astronomers wikiPageExternalLink orange-county-astronomers.
- Orange_County_Astronomers wikiPageID "2302380".
- Orange_County_Astronomers wikiPageLength "5621".
- Orange_County_Astronomers wikiPageOutDegree "18".
- Orange_County_Astronomers wikiPageRevisionID "658993256".
- Orange_County_Astronomers wikiPageWikiLink Alexei_Filippenko.
- Orange_County_Astronomers wikiPageWikiLink Apple_Inc..
- Orange_County_Astronomers wikiPageWikiLink Astroimaging.
- Orange_County_Astronomers wikiPageWikiLink Astronomer.
- Orange_County_Astronomers wikiPageWikiLink Astrophysics.
- Orange_County_Astronomers wikiPageWikiLink Category:Amateur_astronomy_organizations.
- Orange_County_Astronomers wikiPageWikiLink Chapman_University.
- Orange_County_Astronomers wikiPageWikiLink Computer.
- Orange_County_Astronomers wikiPageWikiLink IBM.
- Orange_County_Astronomers wikiPageWikiLink Kaypro.
- Orange_County_Astronomers wikiPageWikiLink Microsoft.
- Orange_County_Astronomers wikiPageWikiLink Mobile_home.
- Orange_County_Astronomers wikiPageWikiLink Newtonian_telescope.
- Orange_County_Astronomers wikiPageWikiLink Observatory.
- Orange_County_Astronomers wikiPageWikiLink Operating_system.
- Orange_County_Astronomers wikiPageWikiLink Schmidt–Cassegrain_telescope.
- Orange_County_Astronomers wikiPageWikiLink Star_party.
- Orange_County_Astronomers wikiPageWikiLink Telescope.
- Orange_County_Astronomers wikiPageWikiLinkText "Orange County Astronomers".
- Orange_County_Astronomers wikiPageUsesTemplate Template:COI.
- Orange_County_Astronomers wikiPageUsesTemplate Template:Essay-like.
- Orange_County_Astronomers wikiPageUsesTemplate Template:Lead_rewrite.
- Orange_County_Astronomers wikiPageUsesTemplate Template:Multiple_issues.
- Orange_County_Astronomers wikiPageUsesTemplate Template:Primary_sources.
- Orange_County_Astronomers wikiPageUsesTemplate Template:Refimprove.
- Orange_County_Astronomers wikiPageUsesTemplate Template:Wide_image.
- Orange_County_Astronomers subject Category:Amateur_astronomy_organizations.
- Orange_County_Astronomers type Organization.
- Orange_County_Astronomers type Page.
- Orange_County_Astronomers type Organization.
- Orange_County_Astronomers comment "Orange County Astronomers (OCA) started life in 1967 when a small group of intrepid amateur astronomers got together to form a club. Those were the days when an amateur built his own telescope, usually a Newtonian reflector. It was a laborious process of grinding a mirror to as close to a 1/4 wave as you could get. Then you built the tube and assembly so you could actually search out a dark patch of sky to look up at the stars.".
- Orange_County_Astronomers label "Orange County Astronomers".
- Orange_County_Astronomers sameAs Q7099546.
- Orange_County_Astronomers sameAs m.0727gh.
- Orange_County_Astronomers sameAs Q7099546.
- Orange_County_Astronomers wasDerivedFrom Orange_County_Astronomers?oldid=658993256.
- Orange_County_Astronomers depiction OCA_General_Meeting_April_2006.jpg.
- Orange_County_Astronomers isPrimaryTopicOf Orange_County_Astronomers.