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PlaneWave Instruments
Manufactures a 20" F/6.8 Coma-free Dall-Kirkham (CDK) optical tube assembly which features a 42mm flat and corrected field plus lightweight carbon fiber and aluminum construction.
http://www.planewaveinstruments.com/
Planewaveinstruments.com ~
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Rigel Systems
LED flashlights for astronomy and aviation, astrophotography accessories, collimation tools, finders, motorized focusers and controllers, plus other accessories.
http://members.cox.net/rigelsys/rigelsys.html
Cox.net ~
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DGM Optics
Produces a unique unobstructed Newtonian reflector which features improved contrast and resolution compared to conventional Newtonians.
http://users.erols.com/dgmoptics/
Erols.com ~
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Hardin Optical
Astronomical telescope optics, oculars and accessories sold under the Astrola name. Company is owned by Larry Hardin, a former employee of Cave Optical.
http://www.hardin-optical.com/
Hardin-optical.com ~
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Obsession Telescopes
Manufacturer of Dobsonian telescopes ranging from 12-1/2" to 30" in aperture. Optional accessories include the ServoCAT servo drive system which may be combined with the Argo Navis digital setting circles.
http://www.obsessiontelescopes.com
Obsessiontelescopes.com ~
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