Konus Italia Group - Italian manufacturer of telescopes, binoculars, spotting scopes, microscopes, compasses and magnifying glasses. Astro Optik - Large telescope systems including Hypergraphs, Deltagraphs, Cassegrains and Ritchey-Chretiens, Newtonians, Dobsonians and Schmidt cameras. ICAS Enterprises - Japanese manufacturer and exporter of optical filters for telescope and industrial use. 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. Astro Optics Pvt. Ltd. - Produces precision optical components, assemblies and small telescopes. Located in India. L&L Optical Services - Provides a wide range of thin film coatings, specializing in metallic and anti-reflection coatings. Experienced in cleaning and coating glass and metallic substates. Carl Zeiss International - Manufactures astronomical telescopes, observatories, domes, optics, focal plane instrumentation and LIDAR equipment. Company also manufactures products for healthcare, vision, measurement and analysis, research, sports, microelectronics, photography and projection applications. AILI Optics & Electronic Co., Ltd. - Manufacturer and exporter of spotting scopes, binoculars, optical lenses and elements, plastic lenses, enlarging and CCD lenses, optical mounts. Offers optical design services. Swarovski Optik - Austrian manufacturer of binoculars, telescopes, rifle scopes, night vision instruments, and tripods. D and G Optical - Offers optical supplies and equipment for astronomy-related sciences and persons interested in the astronomy field. Advanced Telescope Systems - Portable and permanent telescope piers in custom sizes and heights. Custom manufactures accessories for special customer needs. Thousand Oaks Optical - Solar filters, solar eclipse viewers, H-Alpha filters and nebular filters. Brass Telescopes by The Glass Eye - Beautiful heirloom quality terrestrial and nautical brass telescopes, hand held travel telescopes and all weather telescopes. AstroSystems - TeleKit Dobsonian telescope kits, equatorial platforms and altitude bearings for Dobsonians, focusers, collimating tools, telescope covers and other accessories. Astro-Physics Inc. - Telescopes, mounts and accessories for observers and astrophotographers. ProtoStar - Professional-grade diagonal mounts and secondary mirrors, with unique features, for use in small to large telescopes. Trico Machine Products - Makes the Sky Window binocular viewing system, and is a full machine shop specializing in design, prototype and production of quality machined parts. Kenyon Laboratories LLC - Binocular, medium format camera and cinema camera stabilizers, plus gimbals, gimbal mounts, and inverters. Company Seven Astro-Optics Division - Offers custom design and fabrication of astronomical telescopes. Manufactures automated mounts/tracking platforms. Provides in-house optical design and fabrication services, repair services. Dealer for a variety of product lines related to astronomy and other industries. Hands on Optics - Offers astronomical telescopes, Celestron spotting scopes, Pentax eyepieces, digital binoculars and a variety of accessories. Located in Maryland. Omega Optical, Inc. - Designs and manufactures custom astronomy filters and prescription sets, for a wide variety of university programs, observatories, government agencies, and international consortia. Develops solutions for the spectral, optical, and environmental demands of each filter application. Equinox Interscience, Inc. - Manufactures complete telescopes, optical tube assemblies and telescope mounts. Company also offers a variety of design services and produces Deep Sky Black, a low reflectivity surface treatment suitable for aerospace applications. Al's Custom Telescope Accessories - Produces oak tripods and accessories for Celestron's CG-5 telescope and CI-700 tripod, and for Meade's LXD55 telescope. Rainbow Optics - Offers the Star Spectroscope line of spectroscopy instruments for use with any telescope. Products are excellent for educational use, demonstrating the scientific information which can be gleamed from examining the spectrum of "black body" radiation sources such as stars. ATOZastro Forum - Alignment accessories and flexible dew shields for Meade ETX series telescopes and the Meade 497 Autostar. Agena AstroProducts - Offers a wide range of economically priced, high-quality telescopes, accessories and books. Brands include Eclipse, Antares, GSO and Oberwerk. Baader solar film and filters are also available. Celestron International - Several product lines of telescopes, binoculars, spotting scopes, microscopes and eyepieces, plus a large variety of accessories. Meade Instruments Corporation - Several product lines of telescopes and accessories, eyepieces, CCD imaging equipment, astronomical software, spotting scopes, binoculars, and microscopes. Jim's Mobile, Inc. - NGT line of portable, equatorially mounted astronomical telescopes. Also makes various accessories including Motofocus focus motors, Motodec declination motors, R.A. drive motors, computer control systems and NGF focusers. University Optics - Suppliers of astronomical accessories, binocular viewers, eyepieces, binoculars, telescope building supplies, software, books, and components to build a "Cookbook" CCD camera. Parallax Instruments - Newtonian and classical Cassegrain astronomical telescopes, German equatorial mountings, tripods and custom portable or permanent observatory welded steel piers. Stargazer Steve Telescopes - Produces the Sgr-4, a 4-1/4" reflector on an altazimuth mount. Offers reflector telescope kits and accessories. 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. Sky Engineering - Designs and manufactures the Sky Commander product line of digital setting circles. Telescope Engineering Company - Apochromatic refractor and Maksutov-Cassegrain telescopes plus precision optics including optical flats, Cassegrain, Catadioptric, Newtonian, Ritchey-Chretein, Mersen and other optical designs. Stellarvue - Specializes in hand crafted refractors and apochromatic refractors. Offers telescope mount and tripods, spotting scopes plus a variety of accessories. Oberwerk Corporation - Produces a variety of binocular designs for both terrestrial and astronomical applications. DFM Engineering, Inc. - Advanced amateur and professional astronomical telescopes, telescope control systems and mounts, electro-optical telescopes, LIDAR systems, heliostats, siderostats/coeleostats, telescope optics and beam directors. Optical Guidance Systems - Research-grade, observatory class telescope systems for professional and discriminating amateur astronomers, plus custom designed instrumentation for specific needs. NOVA Optical Systems - Optical company which manufactures telescope optics in a wide range of apertures for amateur and professional class telescopes. Site features the free Ultra-Trace telescope design program. Teleport Telescopes - Offers portable Dobsonian telescopes which are designed to collapse down into an extremely compact cubes for transportation. Alpen Outdoor Corporation - Offers a variety of sports optics for the outdoor enthusiast. Products include binoculars and spotting scopes, including waterproof models. Draco Productions - 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. Astrometric Instruments - Provider of custom telescope control systems, including the SkyWalker servo telescope control system and SkyRad accessory controller. Optical Mechanics, Inc. - Fabricates research-quality Newtonian, Cassegrain, Ritchey-Chretein and custom optics, opto-mechanical instruments including LIDAR systems and collimators. Manufactures the Nighthawk line of advanced robotic telescopes plus custom telescopes. Offers optical design and mirror testing services. Edmund Scientific - Produces the well known Astroscan telescope, plus telescope kits, Barlows, eyepieces, telescope accessories and a variety of science education kits. EOS Technologies, Inc. - Offers turn-key observatory systems for astronomy and satellite laser ranging. Systems include telescopes and instruments, enclosures, integrated control systems and software for remote and autonomous operation. Losmandy Astronomical Products - Produces the Losmandy product line of precision equatorial mounts, dovetail systems, the Gemini goto control system and a variety of telescope accessories. Mathis Instruments - Full product line of German equatorial and telescope mounts with full computer control. Mounts are available for telescopes up to 24" aperture and feature tapered conic sections for increased rigidity. Van Slyke Engineering - Versa-Port Sliders, Monster focusers, bifilar micrometers and turret eyepiece holders. Optec, Inc. - Photometers, telecompressors, electric Crayford style focusers, filter wheels and filters, and optical couplers for video microscopy. Optic-Craft Machining - Offers a variety of complete German equatorial telescope mounts for telescopes up to 20" in aperture. Also manufactures precision clock drives featuring worm gears up to 24" in diameter. ScopeCraft, Inc. - Produces the 24" SC-2048 turnkey scientific telescope system and the DriveScope stepper motor control system. Company also custom designs and manufactures complete telescopes, telescope mounts and optical tube assemblies. True Technology Limited - English manufacturer of filter wheels, flip mirrors, filter units and dichroic filters. Beta Electronics, Inc. - Useful 5mw green laser pointers with remote on-off switches, suitable for use as a star finder on a telescope. Collins Electro Optics, LLC - Manufactures the I 3 eyepiece visual image intensifier system which features TeleVue optics, and an optional CCD video adapter for real time display. Denkmeier Optical, Inc. - Stereoscopic Binoviewers and Binoviewer accessories for low power, binocular viewing through telescopes. Hutech Corporation - Manufactures the BORG line of telescopes, binocular scopes, spotting scopes and optical tube assemblies. Additional products include motorized altazimuth mounts and a variety of accessories. Le Sueur Manufacturing Company - Produces the Astro Pier product line of telescope piers for fork mounted and German equatorial telescopes. Lumicon International - Products include Easy Guiders, hypered film and hyper kits, diagonals, the Sky Vector NGC, richfield viewers and many other accessories for amateur astronomers. Moonlite Telescope Accessories - Extremely robust Crayford style focusers, focuser accessories, truss tubes and truss tube connector systems, plus telescope accent kits to personalize your telescope. Clement Focuser - Uniquely designed, patented focuser for use on a variety of telescopes. Offers optional electric focus mechanisms for their focusers. R.F. Royce - Compound reflective optical systems including Cassegrain, Ritchey-Chretien, Dall-Kirkham and various modifications. Refractive systems including achromatic and apochromatic objectives and full aperture corrector catadioptric systems including Schmidt, Maksutov and Houghton types along with near focal corrector systems. Also produces off-axis mirrors. Equatorial Platforms - Wood and aluminum motorized, low profile equatorial platforms for Dobsonian and other altazimuth telescopes. Various accessories including stepper motor control are available for astrophotography. Complete telescopes up to 28" aperture are also available. Peterson Engineering Corp. - Buck's precision gears for LX-200s, EZ Balance counterweights, EZ Clutch and EZ Focus kits, Eye Opener visual backs, and Mounting Assistant plates for attaching telescopes to tripods. PreciseParts - Custom telescope parts and one-of-a-kind components, designed and machined in aluminum, stainless steel, brass, bronze, titanium, Teflon. Re-manufactures hard to find replacement parts for vintage telescopes. Can design new parts per customer specifications. Universal Astronomics - Optical instrument mounts including the T-Mount, UniMount and UniStar for binoculars and telescopes. Retailer for a variety of other product lines. Vixen North America - Telescopes and telescope mounts, binoculars, Lanthanum eyepieces and other accessories. Tau Ceti Company - Accessories for astrophotography including the Universal Camera Mounting Adapter for attaching cameras/telephoto lenses to telescopes, the XY Finder for guide scopes and CCD guide cameras, plus the Flip-Mirror Focuser for CCD cameras located at the telescope's prime focus. Astrozap Dew Shields - Aluminum and flexible dew shields, caps and telescope covers for amateur telescopes. Many products are available in a variety of colors to match your telescope. HoTech Corporation - Products include the Astro Aimer, which features a green laser pointer for pointing telescopes, and a variety of red and white LEDs for map reading and general illumination at night. Pegasus Optics - Optical manufacturer of parabolic primary mirrors and elliptical diagonals for astronomical telescopes. Available primary sizes range from 12-1/2" to 25". Astronomy Optics - Offers a variety of binoculars and binocular stands. Features product lines for astronomy and birdwatching. Located in the UK. BC&F Astro Engineering - British manufacturer of a wide range of astronomical telescope accessories and astronomy related accessories including the GigaWedge and GigaPier for Meade 16" LX-200 scopes. GAMBATO Costruzioni per Astronomia - Italian manufacturer of observatories, planetariums and geodes. Offers observatory structure maintenance services. Guan Sheng Optical Co., Ltd. - Taiwanese manufacturer of reflectors, refractors, Dobsonians, eyepieces, equatorial mounts and accessories. Lin Optics Co., Ltd. - Taiwanese manufacturer of small refractor and reflector telescopes, microscopes. North United Co., Ltd. - Chinese manufacturer of binoculars, telescopes, riflescopes, spotting scopes, night vision scopes, golf scopes. Wildcard Innovations Pty. Ltd. - Australian manufacturer of Argo Navis Digital Telescope Computer systems for alt-azimuth, fork and German equatorial telescope mounts. Advanced Optics Limited - Produces the Vanguard 2000 heavy duty German equatorial mount which features stepper motor driven friction drives. DAR Astro Machining - Products include mirror cells, helical and double helical focusers, eyepiece adapters, video camera adapters and eyepiece parfocal rings. Company is located in Canada. Ceravolo Optical Systems - Offers custom optics fabrication, design consulting and optical testing services for the scientific, industrial and astronomical communities. Opticast, Inc. - Produces, using a patented casting technique, low cost diffraction limited replica optical mirrors for astronomical and other applications. Ufind Optics Company, Ltd. - Chinese manufacturer and exporter of binoculars, telescopes, monoculars, golfscopes and spotting scopes. 43 Degrees South Astro - Produces solar filters and binocular mounts for amateur astronomers. Located in New Zealand. Nite I's - Visual astronomy accessories including adapters, eyepieces, extensions, eyepiece parfocalizers, plus telescopes, hardware, and software. Eastern Shore Company - Concessionaire of coin-operated viewing machines, since 1973. Products include American-made coin-operated binoculars and telescopes. Aeroquest Machining - Worm gear drives for the accurate tracking of deep space and planetary objects for viewing and imaging. Stepper and synchronous motor power systems are available. Shanghai Olive Industries Co., Ltd. - Manufactures optical instruments including biological microscopes, stereo microscopes, telescopes and binoculars. Also produces electronic equipment and garden tools. 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. London Opera Glass Company - Manufactures, installs and services opera glasses within theatres. The service is free to theatres, and allows patrons to rent opera glasses during a performance. Kokusai Kohki - Japanese OEM manufacturer of telescope accessories including WIDESCAN Type III Eyepieces, orthoscopic eyepieces, laser collimators, a "correct view" finder, a unique helicoid off-axis eyepiece holder for Lumicon giant EZ guiders and the "HERCULES" Equatorial Mount with go-to capability. Galaxy Optics - 18" to 25" Newtonian optics for amateurs and scientists. Also makes diagonals and offers mirror testing, refiguring and coating services. 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. LOMO America, Inc. - Amateur and professional telescopes, microscopes, spotting scopes, night vision devices and 35mm film cameras. Astrofox Astronomical Instruments - Specializes in the manufacture of 10" to 30" Newtonians and Folded Newtonians for amateurs, public observatories and universities. Company also sells primary mirrors with apertures up to 36". H. L. Clausing, Inc. - Provides mirror and optical coating services, and caters to the industrial, commercial and aerospace industries. Specializes in custom optical coatings on large substrates up to 92 inches in diameter. Spectrum Coatings - Uses the Ion Assisted Deposition (IAD) process to produce hard, durable, oxide optical thin films without high temperature substrate heating. Offers many types of coatings including protected aluminum and enhanced aluminum for astronomical mirrors as well as other applications. Custom Scientific, Inc. - Custom optics and interference filters with specialization in astronomical filters. Bushnell Performance Optics - Manufacturer of telescopes, binoculars, spotting scopes, riflescopes, laser rangefinders, speed guns, and weather resistant digital cameras. Products are designed primarily for outdoor, sports and nature enthusiasts. Kunming United Optics Corporation - Manufactures binoculars and telescopes, and offers OEM design and production services. Headquarters located in Kunming, China. Starlight NV Ltd - Manufacturers of a variety of night vision products including rifle scopes, Longbow day/night scopes, monoculars, binoculars, goggles and thermal imagers. AstroTechniek - Designs and manufactures large telescopes and mounts, including the CP-165 telescope mount. Offers stepper motor control systems and small telescopes. Located in the Netherlands. Electro-Optical System Co., Ltd. - Korean manufacturer of thermal imaging systems, military fire control equipment, night vision viewers and telescopes, military low vision binoculars and optics, and daytime periscopes, optical modules and parts. Zhitong Industrial Co., Ltd. - A Chinese manufacturer of high quality astronomical telescope accessories. Astroparts - Camera adapters, web cam adapters, superwedge for Meade LX-200 classic series, mirror lock screws, focus bearing kits plus a variety of other accessories. Micro Tech Lab - Manufacturer for intermediate optics for connecting digital cameras to microscopes and telescopes. Located in Austria. Dongguan Great Wall Optical Plastics Works, Ltd. - Manufacturer and supplier of microscopes, binoculars and magnifiers. Located in China. Hextek Corporation - Manufactures and designs large lightweight mirrors and substrates using gas-fusion, casting, precision slumping and fusion technologies for astronomical, airborne, space borne, commercial, government and military optical systems. Hunt Electronic Co., Ltd. - Manufacturer of central surveillance control systems, CCTV, CCD cameras, DOME cameras, board cameras, box cameras and camera accessories exported to worldwide since 1988. ISO9001 certificated. Nightfire Scientific - Manufacturer, retailer and distributor of telescopes and related astronomy accessories. Burgess Optical Company - Designer and builder of economical astronomical telescopes, binoculars, and accessories including Planetary eyepieces, diagonals, and refractors. Questar Corporation - High quality Maksutov Catadioptric telescopes for astronomy, nature, science and surveillance applications. Entire product line features superior optical performance, machining and finish. Established in 1950. Siebert Optics - USA based manufacturer of 2" Binoviewers, 1.25" Binoviewers, high quality eyepieces, telecentric and regular Barlows and other telescope accessories. Webster Telescopes - Manufacturer of Dobsonian telescopes in sizes from 22 inches to 40 inches in aperture. Fully computerized GOTO control systems are available using either the ArgoNavis or ServoCat electronics. Product lines feature Kennedy Optics throughout. Astro Systeme Austria - Company objectives are the development, production and marketing of telescopes and mountings that will thrill the hearts of astrophotographers. Manufactures astrographs, Schmidt cameras and telescope mounts for astrophotography. Kite Optics - Belgian manufacturer of binoculars, telescopes and accessories. Professional optics for birding and outdoor activities. Aquest, Inc. - Produces telescope accessory products including the AstroHub, PCFocus, FocusAide and PCFocus-LX. Vortex Optics - A sport optics company which manufactures a complete product line of binoculars, spotting scopes, riflescopes, monoculars, tripods and accessories. Astrodon - Manufactures LRGB and other types of narrow band filters for CCD astrophotography. Other products include the remotely controlled ROAG off-axis guider, the TAKometer remote controlled camera rotator for Takahashi refractors, and the RGB Weight Calculator software for computing exposure times with RGB filters. AWR Technology - Offers simple and GOTO telescope drives, sidereal time clocks and other electronics equipment for astronomers. DGM Optics - Produces a unique unobstructed Newtonian reflector which features improved contrast and resolution compared to conventional Newtonians. 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. 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. iOptron Scientific, Inc. - Manufactures microscopic, telescopic, spectroscopic and fiber endoscopic instrumentation and subsystems for astronomic, measurement and analysis, medical, laboratory applications. NPZ Optics State Corp. - Russian manufacturer of high quality optical equipment for law enforcement and civilian use, such as day/night vision sights, powerful binoculars and astronomical telescopes. Long Perng - Taiwanese manufacturer of spotting scopes, field scopes, telescopes, and binoculars. L-3 Communications Brashear - Manufactures telescope systems, stabilized tracking systems, optical components, test range instrumentation, laser beam directors and ground fire control systems. Yukon Advanced Optics Worldwide, Inc. - Manufactures the Yukon and Centurion brand of daylight and night vision binoculars, spotting scopes, monoculars and rifle scopes. StellarCAT - Telescope control systems and Argo Navis digital setting circles for Dobsonians and equatorially mounted telescopes. Infinite Optics - Provides thin film coatings and optics for science, medicine, aerospace, and military arenas. Also offers fabrication of optical components to exact specifications. Taychert Telescopes - Produces Dobsonian telescopes in a variety of sizes. The company's FarStar telescope claims to be the lightest weight 18" Dobsonian telescope available from any manufacturer. This company also offers telescopes which are custom built per customer specifications. Discovery Telescopes - Manufacturer of telescopes, spotting scopes, accessories, binoculars and optics, and distributor of Meade, Celestron and Televue equipment. Vixen Co. Ltd. - Manufacturer in Japan of a varied selection of telescopes, mounts, binoculars and spotting scopes. Carson Optical, Inc. - Manufacturer of binoculars, spotting scopes, telescopes, digital microscopes, magnifiers and optical accessories. Steiner-Optik, GmbH - Binocular specialists. Includes details of the product range and an online product advisor. BSA Optics, Inc - Manufacturers of hunting optics for rifles and airguns. Includes a list of retailers, product specifics and a mailing list. Nanjing Intane Optical Engineering Co., Ltd. - Manufacturer of customized telescope focusers, Crayford focusers, apochromatic lenses and optical lenses in China. Reginato - Italian manufacturer of observatory and transportable Newton telescopes, mirrors, blanks and tools. Olivon Manufacturing Group - Canadian manufacturer of spotting scopes and rifle scopes, binoculars, eyepieces, telescopes, accessories and tripods. GoTo & Tracking Systems - Custom made GoTo mounts which are designed to the customer's specifications, plus GoTo conversions of existing telescope mountings. Complete machining and fabrication services are also available. William Optics USA - Manufacturer of short tube refractor telescopes, binoculars, digital camera adapter lenses for telescopes, eyepieces, diagonals and other accessories. Runder Industry Limited - Manufacturer of refractor telescopes, binoculars and other optical accessories. Yunnan, China. Officina Stellare - Manufactures Ritchey Chretien, APO and Super APO optics, complete RC and refractor OTAs, Dobsonian telescopes, plus professional and custom instrumentation. Eastcolight Limited - Hong Kong based educational manufacturer and exporter of small telescopes and microscopes. PlaneWave Instruments - PlaneWave designs and manufactures astrograph telescopes for portable use as well as permanent installations. Pacific Telescope Corp. - Manufacturer and distributor of Sky-Watcher refractors, reflectors, dobsonians, catadioptrics, spotting scopes, binoculars, mounts, eyepieces, motor drives and finderscopes. Oldham Optical U.K. - Offers telescope accessories including mirrors, lenses prisms, and calibration equipment to the professional and amateur market. Site features excellent treatises on optical testing and terms used by opticians to describe optical quality.