Free US Shipping. Watch Gordon prepare pitch polishers and set up his fixed-post polishing machine for spin polishing on the 12-inch mirror. 1/8 PV wavefront specification giving excellent images for any choice of subject. Explore posts in the same categories: A 4-inch (102mm) Refractor Can be An Excellent Deep-Sky Telescope This entry was posted on May 23, 2010 at 3:20 am and is filed under A 4-inch (102mm) Refractor Can be An Excellent Deep-Sky Telescope.You can subscribe via RSS 2.0 feed to this post's comments. Atomic Energy Nuclear Fusion Research Laboratories, Culham. Type of telescope Research Grade �806 Secondary Size 90mm �198, Standard Grade �2233 These mirrors or any telescope we may supply with these mirrors is not supplied with a full Zygo report.ProfessionalProfessional Grade Optics primaries are produced from quality low expansion Suprax glass from Schott Germany. 13 watching. Secondary Size 63mm �90 Recommended 80mm Telescope Spherical Mirror - 800mm Focal Length $19.99 Sky Watcher Classic 200 Dobsonian 8-inch Aperature Telescope – Solid-Tube – Simple, Traditional Design – … We have been coating Primary Telescope mirrors for over 40 years. Zambuto Optical Company is located in a rural area and is functionally self-sufficient in almost all circumstances. Orion 8850 2-Inch Refractor Telescope Mirror Diagonal $84 Orion also has the best selection of 2″ diagonals around so this will look a lot like the 1.25″ models. | Browse our daily deals for even more savings! Telescope MIrror Sets to purchase online. Secondary Size 90mm �198, Standard Grade �522 Professional Grade �601 Please contact us if you wish to specify your thickness precisely.StandardOur Standard mirrors are produced from quality low expansion Suprax glass from Schott Germany. High powers are useful for detecting faint stars, use up to 50X or 75X per inch if seeing conditions permit. The zonal width also shrinks with increasing correction needed to parabolize. Primary mirrors are supplied exclusively by Lightholder Optical (16"-22"), manufacturer of fine primary mirrors. Research Grade �2203 Free US Shipping. Coated with Hilux enhanced optical coatings. Ultra Grade �453, Secondary Size 44mm �50 This will greatly reduce image distortion due to mirror seeing. Secondary Size 75mm �114 Recommended Professional Grade �180 Antares Optics provides finely crafted 1/20 P-V secondary mirrors up to 4.00" Minor Axis that are a perfect match for these fast primary mirrors. Professional Grade �330 They can resolve double stars at .76 arcseconds and can be magnified up to 304 times the human eye. Free shipping on many items ... 18 INCH Glass Reflector Telescope Mirror Lens Optical Optics 1” Thick BLUE TINT. Page 1 of 3 - 4.5 inch reflector is there a great one? Although effective, it was a rather noxious process where the surface of the mirror was bathed in the silvering chemicals. Professional Grade �444 Ultra Grade �1560, Secondary Size 63mm �90 These mirrors are virtually unsurpassed in performance and will produce some of the finest images available for either visual, film or CCD work. Research Grade �3010 In 1857, Karl August von Steinheil and Léon Foucault (yes, that Léon Foucault) developed the process to deposit an optical quality silver coating on glass telescope mirrors. What about a celestron/vixen model? Their incredible accuracies and reflective characteristics lend themselves to the realms of optics we have supplied to: OPTICS : Telescope Mirrors : Elliptical Flats : Mirror Cells : Zygo : Optics Finish Note : PV ExplainedMirror Recoating : All About Optics : Optical Coatings : Optical + Telescope Testing, Research Grade �220 Get the best deals on Reflector Telescope Mirrors when you shop the largest online selection at eBay.com. World class optics. Parabolic mirror: GSO offers very HIGH quality parabolic mirrors for the people who want to build their own telescopes or DIY project. Ultra Grade �480, Secondary Size 50mm �60 At Orion Optics UK we pride ourselves on having some of the finest optical technicians anywhere in the world. Research Grade �537 These mirrors are exceptional in performance and can be relied upon 100% to give virtually flawless images. Produced from quality low expansion Suprax glass from Schott Germany. Starting from a rough glass blank, you can obtain an almost perfect parabola with surface errors in the range of 20 to 60 nm. Secondary Size 75mm �114, Standard Grade �355 Secondary Size 50mm �60 Recommended, Standard Grade �128 Out of Stock. Research Grade �1322 Parabolic Primary Mirror. Both comments and pings are currently closed. Our Price: $285.00. $699.99. Secondary Size 82mm �144, Standard Grade �566 Professional Grade �318 But the optimal size for a particular telescope's secondary mirror hardly depends at all on the f/ratio of the telescope's primary mirror. Out of Stock. Out of Stock . Ranging in aperture from 6” to 16” and offered in various f-ratios, these mirrors are made from optical grade BK-7 glass. How to Spray Silver a Telescope Mirror. The parabolic mirror size from 6" to 24", all of these mirrors were made by BK7 or Quartz quality optical glass, all mirrors have an enhance aluminum reflective coating, reflectivity is approximately 93%. Secondary Size 75mm �114, Standard Grade �264 Ultra Grade �268, Secondary Size 35mm �42 Recommended Ostahowski Optical supplies 1/10 P-V secondary mirrors larger than 4.00". Secondary Size 110mm �258, Standard Grade �385 The majority of these primaries we make are bought by amateur telescope makers or just customers who want to upgrade the optics in their imported, usually Chinese branded telescope. 4 Grades available: Standard, Professional, Research and Ultra. Secondary Size 82mm �144 The glass used was CER-VII-R. Secondary Size 44mm �50, Standard Grade �270 A 4 inch F8 mirror needs 0.3 waves correction (all measured tangent from center or edge), a 8 inch F7 needs 1 wave, a 16 inch F5 needs 5.7 waves and a 30 inch F2.7 needs close to 65 waves correction. Secondary Size 75mm �114 SVBONY 1.25 inches 90 Degree Zenith Diagonal Mirror for Refractor and Cassegrain Telescopes Astr… or Best Offer. Ultra Grade �3693, Secondary Size 90mm �198 We are your source for astronomy telescopes, eyepieces, astroimaging cameras, and more! Out of Stock . This 10-inch Dobsonian telescope is specially designed to provide you with the most beautiful view. Free delivery and returns on eBay Plus items for Plus members. I bought a newer one that was a orion mini dob, and I am really happy with it. Zambuto Optical Company is a full service custom manufacturer of premium Newtonian primary telescope mirrors from 7" through 24" diameter. 3) Hooker Telescope, 100-inch (2.5 m), 1917; world's largest telescope from 1917 to 1949 4) Multiple Mirror Telescope, 186-inch (4.72 m) effective, 1979–1998; 6.5 m, from 1998 5) LAMOST (Large Sky Area Multi-Object Fiber Spectroscopic Telescope), 4.9 m effective at best, 2009 Coated with now world famous Hilux high performance coatings as standard. Supplied with full Zygo interferometer report.ResearchWe measure regularly in their manufacturing process and, Zygo interferometer tests confirm, our Research Grade optics are some of the finest optics available anywhere at any price. Special Notice- We want to let our customers know that during this timeframe we continue to do business as usual. Shop today! Secondary Size 100mm �234 Recommended We fit these as a matter of course to our CT range of ‘scopes ensuring their performance is even further enhanced with a virtual zero expansion, and flexure, high specification Carbon Fibre tube. 1/4 PV wavefront specification giving excellent images for any choice of subject. GSO 8" f/5 Parabolic Primary and 62.5mm Secondary Telescope Mirror Set . Let's take a look at some 4.5 inch reflectors and compare prices and features. The mirror is made from low-expansion glass. Research Grade �381 Research Grade �738 Supplied with full Zygo interferometer report.UltraWith our continuous developments in optics we have now reached a position where we can offer with 100% reliability, optics which we believe are the best available anywhere in the world. 4 Best 10-Inch Telescopes Best 10-Inch Dobsonian Telescope Sky Watcher 10″ Traditional Dobsonian Telescope. Ultra Grade �1058, Standard Grade �1039 Research Grade �218 Ultra Grade �1161, Secondary Size 63mm �90 Often referred to as aluminising, re-aluminising, coating, re-coating, silvering or re-silvering To order our Telescope Mirror re-coating service, please choose the correct process for your Primary Mirror size and Secondary mirror … Special Notice-We want to let our customers know that during this timeframe we continue to do business as usual. Browse an extensive selection of astronomy equipment at Telescopes.net. Otherwise, our schedule goes on at a normal pace. High-precision Spherical Lens Newtonian reflection astronomical telescope F750 The optics we produce are world renowned for being among the best available. All mirrors have a reflective aluminum coating with … While the telescope has a clear aperture of 40-inches, the mirror's physical diameter measures 41-inches leading to the telescope usually being called the "41 inch" to avoid confusion with the 40 inch refractor. Secondary Size 82mm �144, Standard Grade �1628 Secondary Size 75mm �114 Recommended GSO's parabolic primary mirrors are perfect for those who want to build their own telescopes or replace mirrors in older ones. Research Grade �507 Professional Grade �474 Howard Banich and Peter Pekurar . This Orion 8850 2-Inch Refractor Telescope Mirror Diagonal is a solid basic model that will replace the one that came with your entry level telescope. Each optical surface is tested up to 29 times as it passes through its many processes of being turned from a blank piece of glass to a highly accurate figured mirror or lens. Below is our selection of Telescope Mirrors available to purchase and a brief description of each grade's qualities. For example, the Advanced Technology Solar Telescope (ATST) 4.24-meter primary mirror uses a … The diameter of the mirror there would be 4.5 inches on a 4.5 inch telescope. Ultra Grade �2619, Secondary Size 75mm �114 Ultra Grade �270, Secondary Size 44mm �50 Our Price: $265.00. Professional Grade �1747 Secondary Size 50mm �60 Recommended Secondary Size 63mm �90 Recommended $19.99 shipping. Secondary Size 63mm �90 Please don't hesitate to contact us if you have questions. Ultra Grade �270, Standard Grade �120 Research Grade �400 There may be delays with regard to shipments due to outside circumstances beyond our control, but we continue to perform our optical fabrication and coating work without interruption, and will have it ready for delivery. 1/6 PV wavefront specification giving excellent images for any choice of subject. Each is Supplied with full Zygo interferometer report.These primary mirrors are expensive, they are also not recommended for just occasional star gazing. This video shows how simple it is to cut circles out if thick glass. Professional Grade �188 Ultra Grade �754, Mirror Sets (comprises circular primary and eliptical secondary) To buy - click on a price. Get the best deal for Telescope Mirrors & Prisms from the largest online selection at eBay.com. My mirrors are made to the following design and use specifications. Research Grade �220 6" Optical tubes also make exceptional light gatherers by allowing an observer to see 14.7 magnitude stars! Ultra Grade �724, Secondary Size 50mm �60 Our Ultra range has Strehl values typically around 99% with RMS values of the order of 0.02PV. | Free shipping on many items! Coated with highly reflective Hilux, you are guaranteed much brighter images than most telescopes on the market. 6-inch Telescopes offer exceptional resolution for their size. Coupled with a guaranteed PV wavefront error so small, it often is less than 1/10PV wavefront. Shop with Afterpay on eligible items. GSO 8" f/4 Parabolic Primary and 70mm Secondary Telescope Mirror Set . * This thickness is nominal and can vary. This is why all large professional mirrors, regardless of the type of glass used, employ complicated cooling systems to cool the primary mirror. Professional Grade �654 Professional Grade �2607 Professional Grade �1160 Secondary Size 82mm �144 Recommended Even though some builders prefer to buy commercial mirrors and fit them in a DIY structure, I believe that making a telescope mirror is probably the most rewarding part of the whole built. Get the best deals on Telescope Mirrors. Since I am so happy with the format, I was wondering if there is a premium version of this scope. Telescope Aperture The diameter of the objective lens or mirror. Power The power of the telescope, computed as focal length of the telescope divided by the focal length of the eyepiece. Contact our Sales Team by Email: sales@orionoptics.co.uk or Telephone: 01782 614200, TERMS & CONDITIONS | FIND US | YAHOO GROUP. - posted in Classic Telescopes: Hi, I see tons of 4.5 inch reflectors for sale on craigs list.