Open Directory - Science: Astronomy: Products and Services: Telescopes, Binoculars and Accessories

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: Science
: Astronomy
: Products and Services
: Telescopes, Binoculars and Accessories (309)

CCD Cameras (29)
Dealers (96)
Equipment Rentals (1)

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Business: Electronics and Electrical: Optoelectronics and Fiber: Lasers (123)

1stBase - Produces collapsible Dobsonian mounts which fold up for storage and transportation. Mounts are available separately or sold with Compact Precision Telescopes tube assemblies.
43 Degrees South Astro - Produces solar filters and binocular mounts for amateur astronomers. Located in New Zealand.
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.
AIM Controls, Inc. - Manufactures industrial laser systems and motion control products, precision and custom worm drives in a wide range of sizes and gear ratios, plus a complete line of telescopes, mounts, and control systems for astronomy.
ATOZastro Forum - Alignment accessories and flexible dew shields for Meade ETX series telescopes and the Meade 497 Autostar.
AWR Technology - Offers simple and GOTO telescope drives, sidereal time clocks and other electronics equipment for astronomers.
Advanced Optics Limited - Produces the Vanguard 2000 heavy duty German equatorial mount which features stepper motor driven friction drives.
Advanced Telescope Systems - Portable and permanent telescope piers in custom sizes and heights. Custom manufactures accessories for special customer needs.
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.
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.
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.
Alpen Outdoor Corporation - Offers a variety of sports optics for the outdoor enthusiast. Products include binoculars and spotting scopes, including waterproof models.
Aquest, Inc. - Produces telescope accessory products including the AstroHub, PCFocus, FocusAide and PCFocus-LX.
Astro Optics Pvt. Ltd. - Produces precision optical components, assemblies and small telescopes. Located in India.
Astro Optik - Large telescope systems including Hypergraphs, Deltagraphs, Cassegrains and Ritchey-Chretiens, Newtonians, Dobsonians and Schmidt cameras.
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.
Astro Works Corporation - Manufactures the Centurion 18 telescope system which features a focal ratio of f/2.8. These instruments are designed for moderately wide field CCD imaging applications and asteroid patrols.
Astro-Physics Inc. - Telescopes, mounts and accessories for observers and astrophotographers.
AstroCards - Makes AstroCards finder charts, the AstroCards lighting system for viewing the cards at night, and offers a variety of other products.
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".
AstroSystems - TeleKit Dobsonian telescope kits, equatorial platforms and altitude bearings for Dobsonians, focusers, collimating tools, telescope covers and other accessories.
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.
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.
Astrometric Instruments - Provider of custom telescope control systems, including the SkyWalker servo telescope control system and SkyRad accessory controller.
Astronomy Optics - Offers a variety of binoculars and binocular stands. Features product lines for astronomy and birdwatching. Located in the UK.
Astronomy Technologies - Manufacturer of high end, high quality, yet affordable APO refractors and 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.
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.
Avian Optics - Manufacturer of binoculars, spotting scopes, telescopes and accessories.
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.
BSA Optics, Inc - Manufacturers of hunting optics for rifles and airguns. Includes a list of retailers, product specifics and a mailing list.
Beta Electronics, Inc. - Useful 5mw green laser pointers with remote on-off switches, suitable for use as a star finder on a telescope.
Brass Telescopes by The Glass Eye - Beautiful heirloom quality terrestrial and nautical brass telescopes, hand held travel telescopes and all weather telescopes.
Burgess Optical Company - Designer and builder of economical astronomical telescopes, binoculars, and accessories including Planetary eyepieces, diagonals, and refractors.
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.
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.
Carson Optical, Inc. - Manufacturer of binoculars, spotting scopes, telescopes, digital microscopes, magnifiers and optical accessories.
Celestron International - Several product lines of telescopes, binoculars, spotting scopes, microscopes and eyepieces, plus a large variety of accessories.
Ceravolo Optical Systems - Offers custom optics fabrication, design consulting and optical testing services for the scientific, industrial and astronomical communities.
Chengdu SWOC Industries Co., Ltd. - Manufactures telescopes and binoculars, optical components including singlet, doublet, cylindrical and aspherical lenses, prisms and corner cubes, beamsplitters and waveplates, polarizers and coatings.
Clement Focuser - Uniquely designed, patented focuser for use on a variety of telescopes. Offers optional electric focus mechanisms for their focusers.
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.
Compact Precision Telescopes - Uniquely designed, collapsible open frame telescopes and primary mirror cells which are CNC machined from aluminum.
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.
Coronado Technology Group - H-Alpha and white light solar filters and accessories for telescopes, plus the Maxscope line of dedicated solar instruments.
Custom Scientific, Inc. - Custom optics and interference filters with specialization in astronomical filters.
Custom Telescopes UK - British company that manufactures telescopes, Newtonian mirror sets, eyepieces, and other accessories.
D and G Optical - Offers optical supplies and equipment for astronomy-related sciences and persons interested in the astronomy field.
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.
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.
DGM Optics - Produces a unique unobstructed Newtonian reflector which features improved contrast and resolution compared to conventional Newtonians.
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.
Denkmeier Optical, Inc. - Stereoscopic Binoviewers and Binoviewer accessories for low power, binocular viewing through telescopes.
Discovery Telescopes - Manufacturer of telescopes, spotting scopes, accessories, binoculars and optics, and distributor of Meade, Celestron and Televue equipment.
Dongguan Great Wall Optical Plastics Works, Ltd. - Manufacturer and supplier of microscopes, binoculars and magnifiers. Located in China.
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.
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.
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.
Eastcolight Limited - Hong Kong based educational manufacturer and exporter of small telescopes and microscopes.
Eastern Shore Company - Concessionaire of coin-operated viewing machines, since 1973. Products include American-made coin-operated binoculars and telescopes.
Edmund Scientific - Produces the well known Astroscan telescope, plus telescope kits, Barlows, eyepieces, telescope accessories and a variety of science education kits.
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.
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.
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.
GAMBATO Costruzioni per Astronomia - Italian manufacturer of observatories, planetariums and geodes. Offers observatory structure maintenance services.
Galaxy Optics - 18" to 25" Newtonian optics for amateurs and scientists. Also makes diagonals and offers mirror testing, refiguring and coating services.
Galileo's Place - Galileo's Place is the home of Galileo telescopes, binoculars, and accessories for telescopes and binoculars
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.
Guan Sheng Optical Co., Ltd. - Taiwanese manufacturer of reflectors, refractors, Dobsonians, eyepieces, equatorial mounts and accessories.
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.
Hands on Optics - Offers astronomical telescopes, Celestron spotting scopes, Pentax eyepieces, digital binoculars and a variety of accessories. Located in Maryland.
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.
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.
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.
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.
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.
ICAS Enterprises - Japanese manufacturer and exporter of optical filters for telescope and industrial use.
Infinite Optics - Provides thin film coatings and optics for science, medicine, aerospace, and military arenas. Also offers fabrication of optical components to exact specifications.
Infinity Scopes, LLC - Produces the Uti product line of extremely lightweight and portable Newtonian telescopes, computerized telescopes and digital setting circles.
Insulated Dew Shield - Custom insulated dew shields for refractors and compound telescopes.
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.
Ken's Rings - Manufactures tube rings, counterweights, mount saddle plates, guide scope adapter plates and dovetail plates. Also offers custom modified commercial telescopes.
Kendrick Astro Instruments - Products include the Dew Remover System, portable power packs, Kwik Focus masks, observer tents, shelter domes and observing chairs.
Kenyon Laboratories LLC - Binocular, medium format camera and cinema camera stabilizers, plus gimbals, gimbal mounts, and inverters.
Kite Optics - Belgian manufacturer of binoculars, telescopes and accessories. Professional optics for birding and outdoor activities.
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.
Konus Italia Group - Italian manufacturer of telescopes, binoculars, spotting scopes, microscopes, compasses and magnifying glasses.
Kunming United Optics Corporation - Manufactures binoculars and telescopes, and offers OEM design and production services. Headquarters located in Kunming, China.
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.
L-3 Communications Brashear - Manufactures telescope systems, stabilized tracking systems, optical components, test range instrumentation, laser beam directors and ground fire control systems.
LOMO America, Inc. - Amateur and professional telescopes, microscopes, spotting scopes, night vision devices and 35mm film cameras.
Le Sueur Manufacturing Company - Produces the Astro Pier product line of telescope piers for fork mounted and German equatorial telescopes.
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.
Lin Optics Co., Ltd. - Taiwanese manufacturer of small refractor and reflector telescopes, microscopes.
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.
Long Perng - Taiwanese manufacturer of spotting scopes, field scopes, telescopes, and binoculars.
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.
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.
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.
Maui Optical Systems and Imaging Center - Designs and manufactures laser and optical components, telescopes and instruments for astronomy, education, and defense. Offers in-house mechanical and optical design, fabrication, and prototyping.
Meade Instruments Corporation - Several product lines of telescopes and accessories, eyepieces, CCD imaging equipment, astronomical software, spotting scopes, binoculars, and microscopes.
Meridian Telescopes - A variety of products, components and accessories for the amateur telescope builder. Also offers plans for building a telescope.
Micro Tech Lab - Manufacturer for intermediate optics for connecting digital cameras to microscopes and telescopes. Located in Austria.
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.
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.
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.
Nanjing Intane Optical Engineering Co., Ltd. - Manufacturer of customized telescope focusers, Crayford focusers, apochromatic lenses and optical lenses in China.
Nightfire Scientific - Manufacturer, retailer and distributor of telescopes and related astronomy accessories.
Nite I's - Visual astronomy accessories including adapters, eyepieces, extensions, eyepiece parfocalizers, plus telescopes, hardware, and software.
North United Co., Ltd. - Chinese manufacturer of binoculars, telescopes, riflescopes, spotting scopes, night vision scopes, golf scopes.
Oberwerk Corporation - Produces a variety of binocular designs for both terrestrial and astronomical applications.
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.
Officina Stellare - Manufactures Ritchey Chretien, APO and Super APO optics, complete RC and refractor OTAs, Dobsonian telescopes, plus professional and custom instrumentation.
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.
Olivon Manufacturing Group - Canadian manufacturer of spotting scopes and rifle scopes, binoculars, eyepieces, telescopes, accessories and tripods.
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.
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.
OpticPage.com - Canadian distributor of a variety of optical products which are produced in Asia. Product lines include binoculars, riflescopes, spotting scopes, telescopes, loupes and magnifiers, medical optical instruments and night vision equipment.
Optical Development Workshop of Academy of Sciences - Czech Republic developer and manufacturer of optics elements and systems.
Optical Guidance Systems - Research-grade, observatory class telescope systems for professional and discriminating amateur astronomers, plus custom designed instrumentation for specific needs.
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.
Opticast, Inc. - Produces, using a patented casting technique, low cost diffraction limited replica optical mirrors for astronomical and other applications.
Pacific Telescope Corp. - Home of the Sky-Watcher brand of astronomical refractors and reflectors, catadioptric Newtonians, Maksutov-Cassegrains, plus spotting scopes, mounts, eyepieces and accessories.
Pacific Telescope Corp. - Manufacturer and distributor of Sky-Watcher refractors, reflectors, dobsonians, catadioptrics, spotting scopes, binoculars, mounts, eyepieces, motor drives and finderscopes.
Parallax Instruments - Newtonian and classical Cassegrain astronomical telescopes, German equatorial mountings, tripods and custom portable or permanent observatory welded steel piers.
Parks Optical - Newtonian and Newtonian-Cassegrain reflecting telescopes, optical tube assemblies, telescope making components, binoculars, spotting scopes and microscopes, plus eyepieces and accessories.
Pegasus Optics - Optical manufacturer of parabolic primary mirrors and elliptical diagonals for astronomical telescopes. Available primary sizes range from 12-1/2" to 25".
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.
PlaneWave Instruments - PlaneWave designs and manufactures astrograph telescopes for portable use as well as permanent installations.
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.
ProtoStar - Professional-grade diagonal mounts and secondary mirrors, with unique features, for use in small to large telescopes.
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.
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.
RC Optical Systems - Specializes in design and manufacture of Ritchey-Chretien telescopes for professional and amateur astronomers. Designs feature composite construction for thermal stability and reduced weight.
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.
Reginato - Italian manufacturer of observatory and transportable Newton telescopes, mirrors, blanks and tools.
Runder Industry Limited - Manufacturer of refractor telescopes, binoculars and other optical accessories. Yunnan, China.
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.
Seymour Solar - Manufacturer of glass and thin film solar filters for telescopes, binoculars, spotting scopes and cameras.
Shanghai Olive Industries Co., Ltd. - Manufactures optical instruments including biological microscopes, stereo microscopes, telescopes and binoculars. Also produces electronic equipment and garden tools.
Siebert Optics - USA based manufacturer of 2" Binoviewers, 1.25" Binoviewers, high quality eyepieces, telecentric and regular Barlows and other telescope accessories.
Sky Engineering - Designs and manufactures the Sky Commander product line of digital setting circles.
SkyPointer - Green laser pointers for aiming a telescope, plus a variety of pointer brackets and accessories.
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.
Stargazer Steve Telescopes - Produces the Sgr-4, a 4-1/4" reflector on an altazimuth mount. Offers reflector telescope kits and accessories.
Starlight NV Ltd - Manufacturers of a variety of night vision products including rifle scopes, Longbow day/night scopes, monoculars, binoculars, goggles and thermal imagers.
Starmaster Portable Telescopes - 11" to 30" aperture portable Dobsonian telescopes featuring truss tube designs. Also offers the 12-1/2" ELGT telescope which includes the SkyTracker, providing goto and track capability.
Steiner-Optik, GmbH - Binocular specialists. Includes details of the product range and an online product advisor.
Stellar Technologies International - Stiletto brand knife-edge focusers, wide-field adapters, plus accessories for 35mm, CCD, and medium format cameras.
StellarCAT - Telescope control systems and Argo Navis digital setting circles for Dobsonians and equatorially mounted telescopes.
Stellarvue - Specializes in hand crafted refractors and apochromatic refractors. Offers telescope mount and tripods, spotting scopes plus a variety of accessories.
Superior Optics Company - Manufactures a range of cameras, binoculars, night vision monocular and digital spotting scopes for outdoor activities.
Swarovski Optik - Austrian manufacturer of binoculars, telescopes, rifle scopes, night vision instruments, and tripods.
TAURUS Technologies - Offers the TAURUS Tracker III combination flip mirror and off-axis guider for both film and CCD astrophotography, plus a sealed, self-hypering HyperCamera with direct-view focusing using any eyepiece.
TECH2000 - Produces the Giro altazimuth tripod mounts, Dobsonian and equatorial drive systems, laser collimators, equipment beacons for use at star parties, plus additional products. Exclusive USA distributor of ASM telescopes which feature lightweight ceramic mirrors.
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.
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.
Tectron Telescopes - Offers collimation tools including basic sight tubes, Chesire eyepieces and autocollimators.
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.
Teleport Telescopes - Offers portable Dobsonian telescopes which are designed to collapse down into an extremely compact cubes for transportation.
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.
Telescopes for Amateur Astronomers - Russian manufacturer of TAL brand telescopes including refractors, Newtonians, and Klevtsov modified Maksutov-Cassegrains; and additional products including binoculars, night vision equipment, riflescopes and many accessories.
Thousand Oaks Optical - Solar filters, solar eclipse viewers, H-Alpha filters and nebular filters.
Tinsley Laboratories - Specializes in the manufacture of aspherical optics and light-weighted Beryllium mirrors using computer-controlled optical surfacing technologies. The company is famous for producing the optics within the COSTAR optical package which corrected the Hubble Space Telescope's optical flaws.
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.
True Technology Limited - English manufacturer of filter wheels, flip mirrors, filter units and dichroic filters.
Ufind Optics Company, Ltd. - Chinese manufacturer and exporter of binoculars, telescopes, monoculars, golfscopes and spotting scopes.
Universal Astronomics - Optical instrument mounts including the T-Mount, UniMount and UniStar for binoculars and telescopes. Retailer for a variety of other product lines.
University Optics - Suppliers of astronomical accessories, binocular viewers, eyepieces, binoculars, telescope building supplies, software, books, and components to build a "Cookbook" CCD camera.
Van Slyke Engineering - Versa-Port Sliders, Monster focusers, bifilar micrometers and turret eyepiece holders.
Vixen Co. Ltd. - Manufacturer in Japan of a varied selection of telescopes, mounts, binoculars and spotting scopes.
Vixen North America - Telescopes and telescope mounts, binoculars, Lanthanum eyepieces and other accessories.
Vortex Optics - A sport optics company which manufactures a complete product line of binoculars, spotting scopes, riflescopes, monoculars, tripods and accessories.
Voyager Optics - Manufacturer in Egypt of refractor and reflector telescopes and Maksutov cassegrain telescopes.
Wangsness Optics - Designs and manufactures lightweight mirrors for lidar systems, telescopes, scanners, active optics and airborne optical systems.
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.
Wildcard Innovations Pty. Ltd. - Australian manufacturer of Argo Navis Digital Telescope Computer systems for alt-azimuth, fork and German equatorial telescope mounts.
William Optics USA - Manufacturer of short tube refractor telescopes, binoculars, digital camera adapter lenses for telescopes, eyepieces, diagonals and other accessories.
Yukon Advanced Optics Worldwide, Inc. - Manufactures the Yukon and Centurion brand of daylight and night vision binoculars, spotting scopes, monoculars and rifle scopes.
Zhitong Industrial Co., Ltd. - A Chinese manufacturer of high quality astronomical telescope accessories.
iOptron Scientific, Inc. - Manufactures microscopic, telescopic, spectroscopic and fiber endoscopic instrumentation and subsystems for astronomic, measurement and analysis, medical, laboratory applications.

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