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DGM Optics
Produces a unique unobstructed Newtonian reflector which features improved contrast and resolution compared to conventional Newtonians.
www.erols.com/

Lin Optics Co., Ltd.
Taiwanese manufacturer of small refractor and reflector telescopes, microscopes.
www.lin-optics.com.tw/

Galaxy Optics
18" to 25" Newtonian optics for amateurs and scientists. Also makes diagonals and offers mirror testing, refiguring and coating services.
www.galaxyoptics.com/

William Optics USA
Manufacturer of high-quality short tube refractor telescopes, binoculars, digital camera adapter lenses for telescopes, Swan eyepieces, diagonals and other accessories.
www.william-optics.com/

University Optics
Suppliers of astronomical accessories, binocular viewers, eyepieces, binoculars, telescope building supplies, software, books, and components to build a "Cookbook" CCD camera.
www.universityoptics.com/

LaScala Optics
Produces a wide product line of lightweight and compact theater binoculars. Product lines include Aida, Carmen, Iolanta, Othello and Rigoletto opera glasses.
www.lascalaoptics.com/

Phantom Optics
Phantom Optics dedicates to make binoculars, riflescopes, spotting scopes, night vision scopes and telescopes for hunting, sailing, nature study and stargazing as well as military and police security purposes. Located in China.
www.phantomoptics.com/

De-Zhong Optics.
Professional Chinese optical products manufacturer and exporter, specializing in traditional binoculars, compact binoculars, zoom binoculars, waterproof binoculars, telescopes and microscopes.
www.de-zhong.com/

Lightholder Optics
Newtonian mirrors made and certified in writing to the most exacting, demanding Millies LaCroix tolerance (1/8 wave at the wavefront), twice as precise as the industry 1/4 wave standard.
www.lightholderoptics.com/

TeleVue Optics
Premium refractor telescopes, eyepieces, and accessories. Products include Nagler eyepieces, Panoptic eyepieces, Radian eyepieces, Plossl eyepieces, Barlows, Powermate, Ranger, 101, fluorite and apochromatic refractors.
www.televue.com/