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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 www.ocastronomers.org.
- Orange_County_Astronomers wikiPageID "2302380".
- Orange_County_Astronomers wikiPageRevisionID "526513848".
- Orange_County_Astronomers coi "February 2012".
- Orange_County_Astronomers essayLike "February 2012".
- Orange_County_Astronomers hasPhotoCollection Orange_County_Astronomers.
- Orange_County_Astronomers leadRewrite "February 2012".
- Orange_County_Astronomers primarySources "February 2012".
- Orange_County_Astronomers refimprove "February 2012".
- Orange_County_Astronomers subject Category:Amateur_astronomy_organizations.
- Orange_County_Astronomers type Abstraction100002137.
- Orange_County_Astronomers type AmateurAstronomyOrganizations.
- Orange_County_Astronomers type Group100031264.
- Orange_County_Astronomers type Organization108008335.
- Orange_County_Astronomers type SocialGroup107950920.
- Orange_County_Astronomers type YagoLegalActor.
- Orange_County_Astronomers type YagoLegalActorGeo.
- Orange_County_Astronomers type YagoPermanentlyLocatedEntity.
- 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 m.0727gh.
- Orange_County_Astronomers sameAs Q7099546.
- Orange_County_Astronomers sameAs Q7099546.
- Orange_County_Astronomers sameAs Orange_County_Astronomers.
- Orange_County_Astronomers wasDerivedFrom Orange_County_Astronomers?oldid=526513848.
- Orange_County_Astronomers depiction OCA_General_Meeting_April_2006.jpg.
- Orange_County_Astronomers homepage www.ocastronomers.org.
- Orange_County_Astronomers isPrimaryTopicOf Orange_County_Astronomers.
