Optics Suppliers and Manufacturers
Newport Corporation
Ross Optical (Rolyn Optics)
Edmund Optics
Newport Glass Works, Ltd
Schott Glass Technologies
Davidson Optronics/Trioptics,Inc
Universe Optics
 

Professional Organizations & Publishers
Photonics Marketplace (Optical Design Software Providers)
The International Society for Optics and Photonics (SPIE)
Optica (formerly Optical Society of America)
Astronomy Magazine
Sky & Telescope 
 

Optics, Astronomy & Telescope Making Resources
AstroGoods.com
Astromart New & Used Equipment
Sky Scientific (Optical Design Software & Surplus Optics)
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Astronomical Organizations and Groups
San Jose Astronomical Association
Golden State Star Party
Okie-Tex Star Party
Central Arkansas Astronomical Society
Astronomy Clubs in YOUR State