- Carl Zeiss
- Manufactures a wide variety of optical products and other items used in scientific researches.
- Celestron
- Designer and manufacturer of various optical products including those for astronomical research.
- Meade
- Specializes in the design and manufacture of telescopes and accessories for amateur astronomers.
- My Scope Store
- A consumer shopping guide for rifle scopes, binoculars, spotting scopes, and other outdoor optics.
- Swarovski Optik
- Family-owned company dedicated to the production and distribution of binoculars and telescopes.
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