10 Micron Astrotechnology | Italian manufacturer of GEMs and tripods; available in the USA from Alpine Astronomical. |
1800Destiny | Manufacturer of secondary elliptical flats, curved 3 or 4 vane secondary spiders and ATM supplies. |
ADM Accessories | Manufacturer of dovetail systems in a variety of widths and lengths. |
Adorama | Retailer of astronomical equipment, astrocameras and binoculars. |
Advanced Telescope Systems | Manufacturer of highly stable portable telescope tripods and permanent piers. |
Agena AstroProducts | Retailer of telescopes, binoculars and astronomical accessories; free shipping and many unique or hard to find items. |
AG Optical (AGO) | Manufacturer of 12.5" to 20" corrected Dall Kirkham and 10" to 16" Newtonian astrographs, and accessories. |
Alluna Optics | German manufacturer of optics, Newtonian astrographs and Ritchey Chretien telescopes. |
Alpine Astronomical | Limited selection retailer of 10 Micron mounts, Baader Planetarium, binoviewers, star diagonals, etc. |
Anacortes | Retailer of astronomical equipment, including Takahashi, PlaneWave, Paramount, Coronado, Meade, SBIG, Televue and Alluna. |
Antares Telescopes | Canadian importer and manufacturer of astronomical telescopes, eyepieces, diagonals, finder scopes and filters. |
APM Telescopes | German supplier of telescopes, including by Markus Ludes and Matthias Wirth. |
Arkansas Sky Observatory | Splash page for Dr. Clay Sherrod's "Supercharge" repair and upgrade service for commercial SCTs. |
Astro Haven Enterprises | Manufacturers of 7' to 20' diameter fiberglass clamshell observatories. |
Astro Domes | Australian manufacturer of 2.9m to 6.5m diameter fiberglass observatories. |
Astromart | Classified ads for used astronomical equipment, auctions and reviews. |
Astronomics / Christopher's Ltd. | Astronomical retailer of many telescope, mount, eyepiece and accessory name brands. |
Astronomy | The other popular magazine on astronomy. |
AstronomyBinoculars.com | Retailer subdivision of Garrett Optical specializing in large aperture binoculars. |
Astronomy Shoppe | Retailer of new, used and vintage astronomical telescopes, binoculars, Dob kits, accessories and telescope repairs. |
Astronomy Technology Today | Magazine of astronomical equipment reviews, DIY and ATM articles. |
Astro Optik Martini | German manufacturer of wood or metal frame Dobsonian telescopes. |
Astro Parts Outlet | Reseller of used astronomical equipment and accessories that tests and guarantees all products sold. |
Astro-Physics | Manufacturer of refracting telescopes and German equatorial mountings. |
Astro Sky Co. | Manufacturer of 10" to 24" Dobsonian telescopes, birch eyepiece cases, mirror cells and transport cases. |
AstroSystems | Manufacturer of Quantum Dobsonian telescopes and a variety of telescope optics and accessories. |
Astro-Tech (AT) | Astronomy Technologies, Inc., distributor of moderately priced telescopes, eyepieces and accessories. |
Astrozap | Maufacturer of dew shields and heaters, filters and masks, and an artificial star for collimation. |
Atik Cameras | Astronomical CCD cameras. |
Baader Planetarium | Manufacturer of telescopes, eyepieces and many accessories, distributed in the USA by several vendors. |
Backyard Observatories | Construction contractor specializing in roll off roof observatories and observatory automation. |
B&H Photo, Video & Pro Audio | Camera retailer offering several name brands of binoculars, telescopes, eyepieces and accessories. |
Berlebach | Manufacturer of over 100 camera and telescope wood tripods. |
BigBinoculars.com | Binocular retailer specializing in handheld and mounted astronomy binoculars. |
The Binocular Site | All things binocular, with over two dozen commercial brands. |
Blue Fireball Technologies | Manufacturer of astroimaging and eyepiece adapters and soft protective cases for computer handsets. |
Bob's Knobs | Collimation thumbscrews ... no more allen wrench in the dark! |
Bonney Lakes Astro Works | Manufacturers of the Milburn wedge and dovetail rail system. |
BookFinder.com | Search engine aggregator of used book inventories; very helpful to find out of print and classic books. |
BuyLighting.com | Convenient source for red light bulbs, useful for observatory lighting. |
Carbon Scope Tubes | Carbon fiber tubes, predrilled on request for several brand name optics; also sells phenolic tubes in limited diameters and lengths. |
CatsEye Collimation | Accessories for cheshire or laser collimation of Newtonian telescopes. |
Celestron | USA manufacturer of microscopes, telescopes and binoculars, in partnership with optical manufacturer Synta Co. (China). |
Clear Sky Institute | Publisher of XEphem astronomical ephemeris software, for "Unix like" systems such as Mac OS and Linux. |
Cloudy Nights | Hosts a large selection of classified ads and informational astronomy forum. |
Collimator.com | Home of Howie Glatter laser collimation tools for reflecting and refracting telescopes. |
Company 7 | Optical fabrication and testing and a retailer of telescopes, binoculars, filters and astronomical accessories, with a Laurel, MD astronomy showroom and telescope museum. |
Core Heat | Manufacturer of battery heated gloves, apparel, cushions and wraps. |
Costruzioni Astronomiche Toscano | Italian manufacturer of Newtonian, Ritchey-Chretien and Cassegrain telescopes, mirrors and flats. |
Costruzioni Ottiche Zen | Italian optical company fabricating mirrors and Dall Kirkham and Ritchey Chretien optical tube assemblies. |
DC-3 Dreams | Creators of ACP Observatory Control Software, ACP Planner and ACP Scheduler (for Windows). |
D & G Optical | Manufacturers of achromat objective lenses and medium focal ratio (/10 to /12) refractor telescopes. |
Dark Skies Apparel | Manufacturers of hooded, deep pocket observing vests and astronomy T shirts. |
Deep Space Products | Retailer offering HyperTune servicing for German equatorial mounts, carbon tubes for C8 and C11 SCTs, mounts, cases, focusers. |
Denkmeier | Manufacturer of Denkmeier binoviewers, eyepieces and filter switch systems. |
DewBuster | Manufacturer of dew heater strips and controllers. |
Diffraction Limited | Publisher of dome control, sky sensor, guiding, imaging and interferogram software. |
DiscMounts Inc. | Manufacturer of image stabilizing, automatically rebalancing altazimuth telescope mounts. |
DGM Optics | Fabricator of optics for Teeter Dobsonian telescopes and off axis Newtonian telescopes. |
DobSTUFF.com | Manufacturer of Dobsonian telescope kits and accessories, and completed Dobs with OEM or customer supplied optics. |
Dream Telescopes & Accessories | Fabricator of carbon fiber and sandwich core telescope tubes and supports. |
Duchek Consulting Services | Supplier of limiting magnitude and alignment star charts and optical cleaning kits. |
Durango Skies | Contractor or supplier of roll-off roof and dome observatories, telescope piers, retailer of PlaneWave telescopes and mounts. |
Edmund Optics | Manufacturer of the Edmund RKE eyepiece and optical components. |
EarthwinBinoviewer.com | Manufacturer of binoviewers and accessories. |
EyepieceCaps.com | Retailer of yellow (dark visible) eyepiece caps and plugs. |
EyepiecesEtc.com | Retailer of selected name brand eyepieces, barlows and filters. |
Explore Scientific | Manufacturer of small refractors and wide field eyepieces. |
Farpoint Astronomical Research | Manufacturer of binocular mounts, collimation aids, dovetail systems, dew shields and miscellaneous accessories. |
First Light Optics | British retailer of astronomical telescopes, mounts, eyepieces and astrocameras. |
Finger Lakes Instrumentation | Manufacturer of cooled CCD astrocameras and accessories. |
Garrett Optical | Manufacturer of binoculars and binocular mounts, including the largest prism binoculars available. |
Great Red Spot Astronomy Products | Retailer of name brand telescopes, eyepieces, mounts and accessories; manufacturer of very large aperture (~40") Dobsonian telescopes. |
Guan Sheng Optical | Taiwanese manufacturer of inexpensive small aperture telescopes and Plössl and Kellner eyepieces. |
Hands On Optics | Retailer of name brand telescopes, eyeieces and accessories. |
Hastings Irrigation Pipe Co. | Supplier of aluminum irrigation pipe, preferred by many ATMs for telescope tubes. |
High Point Scientific | Supplier of brand name telescopes, eyepieces and accessories. |
HoTech | Manufacturer of laser collimation tools and red light flashlights. |
House of Optics | German retailer of telescopes, mounts, eyepieces, binoculars and accessories. |
The Imaging Source | Manufacturer of monochrome and color astronomical CMOS, CCD and GigE cameras. |
Infinity Scopes | Manufacturer of the lightweight, airline portable Uti small reflecting telescopes. |
Intes Micro | Russian manufacturer of Maksutov-Cassegrain and Maksutov-Newtonian telescopes and accessories. |
iSTAR Optical | Czech manufacturer of achromatic and apochromatic refractor telescopes, objective lenses and accessories. |
JMI Telescopes | Manufacturer of telescopes, reverse binocular telescopes, focusers, wheelies and other accessories. |
JP Astrocraft | Manufacturer of 16" to 25" Dobsonian telescopes. |
Kendrick Astro Instruments | Manufacturer of Kendrick dew heaters, dew controllers and related accessories. |
Kennedy Optics | Fabricator of fast (down to /3) 560 mm to 810 mm Newtonian mirrors. |
Knightware | Publishers of Deep-Sky Planner, SQM Reader Pro and SQM Reader observatory software. |
Kokusai Kohki | Importer of Pentax XW and XO, Nikon NAV SW and HW and "volcano top" orthoscopic eyepieces, finderscopes and accessories. |
Land Sea and Sky | USA distributor of Takahashi optical equipment, providing service and technical support as Texas Nautical Repair. |
LensPen | Safe, effective tools for cleaning lenses and mirrors. |
Lockwood Custom Optics | Fabricator of 10" to ~42" Newtonian mirrors. |
Long Perng Industrial Co. | Taiwanese manufacturer of refracting telescopes, binoculars, finderscopes and focusers. |
Losmandy | Manufacturer of the G8, G11 and Titan German equatorial mounts, dovetail systems and Gemini 2 GoTo servo system. |
Lumicon | Manufacturer of astronomical filters, eyepieces, adapters and astrophotography accessories. |
Lunt Solar Systems | Manufacturer of solar telescopes, solar filters and accessories. |
Lymax | Astronomy gadgets and supplies, from SCT coolers to the Herald-Bobroff celestial atlas (out of print). |
MG Chemicals | The link is to their rubber keypad repair kit, useful to repair telescope handsets. |
Mallincam | Canadian manufacturer of video CCD observational systems, sold in the USA by Jack's Astro Accessories. |
Mathis Instruments | Manufacturers of very robust German equatorial and equatorial fork telescope mounts. |
Meade | Manufacturer of brand name telescopes, solar telescopes, eyepieces and accessories. |
Meca-Précis | Only current manufacturer of the Lyot spath blade micrometer. |
Meridian Telescopes | Retialer of eyepieces, telescope accessories and ATM components. |
Microprojects Astronomy Software | Developer of Equinox and Equinox pro, planetarium and observatory software (Mac OS). |
Moonlite | Manufacturer of crayford focusers, truss connectors and accessories. |
Night Vision Depot | Retailer of night vision (infrared) monoculars and binoculars suitable for electronic assisted astronomy. |
Night Vision Home | Retailer of night vision (infrared) monoculars and binoculars suitable for electronic assisted astronomy. |
Nova Optical Systems | Fabricator of astronomical mirrors, and optical coating and testing services. |
Obsession Telescopes | Manufacturer of 12.5" to 25" Dobsonian telescopes at /5 and shorter focal ratios. |
Oceanside Photo & Telescope (OPT) | Online astronomy retailer with one of the largest selections of astronomical equipment. |
Officina Stellare | Italian manufacturer of Ritchey-Chrétien, Riccardi-Honders, Maksutov-Cassegrain and apochromat refracting telescopes. |
Optics Planet | Retailer of a wide variety of military, sports and other optical equipment; use the site search for a brand name or keyword astronomy to see their selection. |
Optic Wave Laboratories (OWL) | Manufacturer of Newtonian mirrors that also offers optical testing, refiguring and optical coating services. |
Optical Guidance Systems (OGS) | Manufacturer of 10" to 40" Ritchey-Chrétien telescopes and automated observatory systems. |
Optical Mechanics Inc. (OMI) | Custom manufacturer of optical components, Dobsonian telescopes and optical tube assemblies. |
Optical Supports | Curt Walker's beautifully made Newtonian mirror cells and truss components. |
Opticsmart.com | Retailer of astronomical telescopes, eyepieces and accessories, including 8" to 12" Dobsonians. |
Optique & Vision | Supplier of "high precision" worm drives for Losmandy telescope mounts. |
Oriel Instruments | Manufacturer of astronomical grade spectrographs and related imaging accessories. |
Orion | Retailer of telescopes, eyepieces, binoculars and astronomy accessories. |
Orion Optics UK | British retailer of astronomical equipment. |
Ostahowski Optics | Manufacture, testing and refiguring of Newtonian mirrors. |
OWL Astronomy Products | Retailer of telescopes, binoculars and astronomical accessories. |
Pacific Design | Manufacturer of cases and covers for commercial SCTs and refractors. |
Parallax Instruments | Manufacturer of Cassegrain, Dall Kirkham and Newtonian telescopes and German equatorial mounts. |
Parks Optical | Vendor of a complete line of reflector ATM components (spiders, mirror cells, tubes, rings, flocking), refractors, Newtonian reflectors, binoculars, eyepieces & microscopes. |
Pegasus Optics | Fabricator of custom and large (12.5" to 24") Newtonian mirrors. |
Peterson Engineering | Manufacturer of various upgrades and accessories for Meade telescopes and large binoculars. |
PicStop | UK retailer of Celestron products. |
Pier-Tech | Manufacturer of low profile roll off roof observatories, mobile observatories and adjustable telescope piers. |
PlaneWave | Manufacturer of 12.5" to 28" corrected Dall Kirkham reflectors. |
Point Grey Research | Manufacturer of Flea, Grasshopper and Chameleon miniature videocameras; Flea is also available at Edmund Optics. |
Precise Parts | Manufacturer of custom electrical adapters and telescope accessories. |
ProtoStar | Vendor of ATM components, including secondary mirrors and spiders, flocked phenolic tubes and flocking materials. |
QSI | Manufacturer of cooled CCD cameras for astroimaging, photometry and spectroscopy. |
Rainbow Optics | Manufacturer of lens blazed diffraction Star Spectroscope for amateur astronomers. |
RC Optical Systems (RCOS) | Manufacturer of 10" to 34" carbon tube or carbon truss Ritchey-Chrétien telescopes, large capacity fork mounts; provider of optical system design services. |
The Right Stuff | Manufacturer of dessicants, dark light illuminators and vibration dampening tripod pads. |
ROBOsky | Canadian manufacturer of 2.25 and 3.65 meter (or custom size) automated fiberglass clamshell observatory shelters, observatory kits and weather stations. |
Royal Astronomical Society of Canada (RASC) | Publisher of the [i]RASC Observer's Handbook,[/i] an essential amateur resource. |
Royce Optics | Manufacturer of custom optical mirrors and lenses, and 8" to 16" Newtonian and Dall Kirkham OTAs. |
RSpec | Informational site on spectroscopy, and provider of the Star Analyser diffraction grating for CCD spectrographic imaging. |
Russell Optics & Machine | Fabricator of traditional eyepiece designs in delrin bodies from overstock optical components. |
SBIG Astronomical Instruments | Manufacturer of CCD cameras, spectrographs, adaptive optics and imaging accessories. |
ScopeGuard | Manufacturer of heavy duty telescope transport cases. |
Scope Stuff | Retailer of an eclectic collection of telescope and observing accessories and equipment adapters, much of it hard to find elsewhere. |
Scopes'n'Skies | British retailer of binoculars, spotting scopes, tripods, astronomical telescopes, eyepieces and accessories. |
SDM Telescopes | Australian manufacturer of custom built 15" to 32" Dobsonian telescopes. |
Shoestring Astronomy | Hobbyist manufacturer of port interface, shutter control and focus motor control products for astrophotographers. |
Siebert Optics | Manufacturer of orthoscopic eyepieces, binoculars and binoviewers. |
Skies Unlimited | Retailer of a variety of astronomical telescopes, eyepieces and accessories. |
Sky Commander | Manufacturer of Sky Commander digital setting circles. |
Sky Publishing | Publisher of Sky & Telescope and many astronomical books and atlases. |
Sky Shed | Manufacturer of SkyShed POD compact polyethylene modular observatories. |
Sky-Watcher | Distributor of refracting and reflecting telescopes and telescope mounts manufactured by Synta. |
Software Bisque | Manufacturer of the Paramount German equatorial mount and TheSkyX observatory software. |
Spectral Instruments Inc. | Scientific CCD imaging company offering a cryo cooled astrocamera. |
Spectrum Coatings | Optical coatings for mirrors and lenses. |
Springer Publishing | International technical book publisher with a large astronomy title list. |
Star GPS | GPS system that plugs in to many telescope computer systems. |
Starizona | Retailer of astronomical equipment and literature, but also a helpful source of astronomical information. |
Starlight Instruments | Manufacturer of the Feather Touch Focuser, electronic focusers and accessories. |
Starlight Xpress | British manufacturer of cooled CCD and video speed astrocameras. |
Starmaster Telescopes | Manufacturer of 11" to 30" Dobsonian telescopes, using Lockwood or Zambuto optics. |
StarStructure Telescopes | Manufacturer of all aluminum 16" to 33" Dobsonian telescopes. |
StellarCAT | Manufacturer of ServoCAT computer control system for drive systems by Argo Navis or Sky Commander used on Dobsonian telescopes. |
Stellar Optical Co. | Import retailer of Russian manufactured Mak Cass and Mak Newt telescopes and accessories. |
Stellarvue | Manufacturer of refracting telescopes, eyepieces, binoculars, finder scopes and accessories. |
Surplus Shed | Reseller of government and other surplus optical and electronic items. |
Suzhou Synta Optical Technology | Chinese manufacturer of Sky-Watcher telescopes and optical supplier to Celestron. |
Swayze Optical | Fabricator of 12.5" to 25" Newtonian mirrors. |
Takahashi America | USA distributor of refractors, Dall Kirkhams (Mewlon) and mounts manufactured by Takahashi (Japan). |
Technical Innovations | Manufacturer of Home-Dome and Pro-Dome observatory domes. |
Telescope Engineering Co. (TEC) | Manufacturer of apochromatic refractors and accessories. |
Telescope House | British retailer of astronomical telescopes, binoculars, eyepieces, mounts and accessories. |
Telescope Performance Improvements | Manufacturer of accessories to improve the stability and rigidity of midsized altaz and equatorial mounts. |
Telescope Solutions | Manufacturer of Telrad dew heaters. |
Teeter's Telescopes | Manufacturer of 10" to 22" Dobsonian telescopes. |
Tele Vue Optics | Manufacturer of eyepieces and refracting telescopes. |
Thousand Oaks Optical | Manufacturer of astronomical filters and dew heating systems. |
TMB Optical | Optical company founded by Thomas Back; company is currently nonresponsive. |
TScope Ultralights | Manufacturer of 14" aperture Dobsonian telescopes and seller of Dobsonian ATM components. |
Unihedron | Manufacturer of handheld and connected (remote report) sky quality meters. |
University Optics | Importer and retailer of inexpensive eyepieces and Newtonian mirror cells. |
Van Slyke Instruments | Home of the VSI bifilar micrometer and what must be the most sophisticated (and expensive) secondary spider available. |
VernonScope | Manufacturer of Brandon eyepieces. |
Vixen Optics | Manufacturer of telescopes, eyepieces and monoculars. |
Walt's Observing Chairs | Manufacturer of red oak adjustable observing chairs. |
Webster Telescopes | Manufacturer of 14" to 32" Dobsonian telescopes. |
Wildcard Innovations | Australian manufacturer of Argo Navis digital telescope computer and motor controller. |
William Optics | Taiwanese manufacturer of refractors, eyepieces, mirror diagonals and accessories. |
Willmann-Bell | Publisher of astronomical specialist books, reprints of classic books, and atlases. |
Woodland Hills Camera & Telescope | Online astronomy retailer with a very wide selection of brands and products. |
Zambuto Optical Company | Fabricator of 8" to 25" Newtonian mirrors. |
Zerochromat | Dialyte objective telescopes by Peter Wise combined with plane mirrors and a folded, off axis design to produce a compact apochromatic instrument. |
ZWO Company | Manufacturer of USB monochrome and color video cameras for astronomical use. |