Manufacturers
Links
DAR Astro Machining
http://www.oneilphoto.on.ca/oneilatm.htm
Products include mirror cells, helical and double helical focusers, eyepiece adapters, video camera adapters and eyepiece parfocal rings. Company is located in Canada.
David Chandler Company
Quality software and publications for astronomy and astronomy education. Manufactures the Deep Space Navigator telescope to computer interface, motor drives for Dobsonian mounted telescopes, high resolution optical encoders, plus custom encoder mounting hardware.
De-Zhong Optics.
Professional Chinese optical products manufacturer and exporter, specializing in traditional binoculars, compact binoculars, zoom binoculars, waterproof binoculars, telescopes and microscopes.
Denkmeier Optical, Inc.
http://www.deepskybinoviewer.com/
Stereoscopic Binoviewers and Binoviewer accessories for low power, binocular viewing through telescopes.
Dewzee Astronomy Products
Produces the Dew Zee line of dew control and light baffling shields for a wide variety of telescopes.
DFM Engineering, Inc.
http://www.dfmengineering.com/
Advanced amateur and professional astronomical telescopes, telescope control systems and mounts, electro-optical telescopes, LIDAR systems, heliostats, siderostats/coeleostats, telescope optics and beam directors.
DGM Optics
http://www.erols.com/dgmoptics/
Produces a unique unobstructed Newtonian reflector which features improved contrast and resolution compared to conventional Newtonians.
Discovery Telescopes, Inc.
http://www.discovery-telescopes.com/
Offers a complete line of Dobsonian reflectors up to 24" in aperture, plus optical primaries and elliptical flats.
Draco Productions
http://www.dracoproductions.net/
Economically priced beginner telescope kits which are suitable for children six years and older or as a family project. Accessories, eyepieces, Baader Solar Filter material and completed telescopes are also available.
Dream - Telescopes & Accessories
Offers advanced composite telescopes which utilize carbon fiber, Kevlar and honeycomb materials. Other products include Ritchey-Chretien telescopes, mirror cells, mounting plates and rings, and parts and accessories.



