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English Page 1 of 2 - Difference between 8 inch and 10 inch Dobsonians - posted in Reflectors: I have owned an 8 inch Dobsonian for a decade and am thinking about upgrading to a 10 inch one (the 12 inch is too large for me to transport). SkyWatcher Flextube 250 SynScan Dobsonian 10-inch Collapsible Computerized GoTo Large Aperture Telescope, White, Model: S11810. For the most discriminating planetary observers who prefer a more portable high-performance telescope we also offer 8” aperture F/7 and 10" or 12.5" aperture with an F/6 focal ratio, as the longer focal ratio makes it possible to consistently achieve wavefront peak-to-valley ratings of less than 1/20th wave with our known process capability. Extreme portability with quick set up and tear down, the 10-inch primary mirror with 1143mm of focal length Truss Tube Dobsonian is easily transported by almost anyone and occupies a very small space in a car for easy transport. I'm looking to buy a 10 inch f/6 conical mirror. Next, you will need a spider and a secondary mirror, also called as a diagonal mirror. The first and key piece that you will need to make for your telescope is the primary, or objective, mirror. For example, the puller for a 10-inch-diameter f/6 mirror with a blank thickness of 1.0 inch would have an inner diameter of 1.5 inches [(0.09 × 102)/(1 × 6)] and an outer diameter of 8.7 inches [10 × (0.97 – 1/10)]. C $661.21. I’m going to be a bit of a contrarian and say “Not as much as you had hoped”. An 10 inch aperture telescope does generally require some experience in telescope mirror making. Description A telescope is a key that unlocks a sense of adventure in the hearts of all of us, and few telescopes offer expert quality without the expert price tag in quite the same way as this telescope. 10-inch Dobsonian Telescope: This instructable documents the design and construction of a 10” reflector telescope. - 2009-2012 Ford F250 F350 Super Duty Door Mirror Driver Left Power Telescopic. Shiv Shakti Enterprises Vintage Nautical Brass Telescope 10 Inch With Brown Tripod Stand Antique Designer Scope. Mount the secondary mirror to … This telescope stands out not only because of its fantastic quality, beautiful mirror, and rave reviews from satisfied customers, but because it solves the greatest weakness of the dobsonian design — portability! On the other hand, a secondary mirror that is too large will also adversely affect the telescope’s performance. For exam-ple, one of the 8-inch telescopes we tested last January had a secondary so small that the effective aperture of the instrument was reduced to 7 inches. The use of a nine-point cell and spherical bearings is probably overkill for a 10” mirror, but ensures that the mirror is evenly and reliably supported. Unarguably, the Primary Mirror is the single most critical component of your telescope. Potential sources of the astigmatism: test stand tester mirror Before long you will be up late at night discovering the universe through a top quality instrument made by your own hands! or Best Offer. Check out our tools page for plaster and tiles. Save 10" telescope mirror to get e-mail alerts and updates on your eBay Feed. Jim's Mobile, Inc. (JMI Telescopes) is a world renowned manufacturer of astronomical telescopes and aftermarket accessories for the amateur and professional astronomer. effect making the telescope perform as if it had a smaller primary mirror. 18 INCH Glass Reflector Telescope Mirror Lens Optical Optics 1” Thick BLUE TINT. 16 watching. The precisely figured 10" f/5 primary mirror is made from BK7 optical glass for … Steve Kennedy is the only large mirror manufacturer who has NEVER had a mirror re-figured, by anybody, EVER. The plaster tool and the mirror rest on a piece of pink closed cell insulation. Next, you will need a spider and a secondary mirror, also called as a diagonal mirror. The 13.2 inch [34cm] f3.0 mirror performs fabulously and needs but a simple mirror cell, ditto for the 10.5 inch [27cm] f2.7. See description on new 6, 8, 10 and 12.5" inch conical mirrors as well as 14.5 inch and larger mirrors for mounting methods. May 7, 2013 - Make your own 10 inch telescope mirror. Folks that may be calling for 12 inch over a 10 probably have a smaller scope they use from home. A General Description of Conical Mirrors. or Best Offer. 4.2 out of 5 stars 13. The mirror is responsible for capturing the incoming light and directing the reflected rays to the focal point. For example, a practiced observer will see more in a 6-inch telescope than a new observer will see in a 10-inch. Sometimes it seems to take forever for your telescope to cool to ambient temperature. Only registered users can write reviews. The mirror was made by Maurizio Di Sciullo of Excelsior Optics in 2002.-----The fork mount was designed to hold a 16" telescope, so the 10" was fit by extending the DEC axis. You can buy them at a hardware store. Why spend thousands for a little telescope of limited resolution and light grasp when you can get the benefits of larger aperture and see a lot more for less. Please. With the Build-A-Scope 10" Classic Dobsonian from Orion, you decide which finder scope, focuser, and eyepiece comes with the telescope. Some factors that influence what you can see with your scope: 1. Fast and Precision Optics. For a reflecting type telescope, the telescope aperture is the distance measured across the widest point of the objective mirror. Zambuto Optical Company is a full service custom manufacturer of premium Newtonian primary telescope mirrors from 7" through 24" diameter. ALL PARTS GUARANTEED!! SkyWatcher Flextube 250 SynScan Dobsonian 10-inch Collapsible Computerized GoTo Large Aperture Telescope, White, Model: S11810 4.3 out of 5 stars 23 Sky-Watcher Flextube 200 Dobsonian 8-inch Collapsible Large Aperture Telescope – Portable, Easy to Use, Perfect for Beginners or Best Offer. Starting from a rough glass blank, you can obtain an almost perfect parabola with surface errors in the range of 20 to 60 nm. Special Notice-We want to let our customers know that during this timeframe we continue to do business as usual. The thermal stability of B270 glass is generally better than the soda lime float glass used for the … The telescope’s aperture, which determines the scope’s light-gathering ability. This kit Includes:- One 10 inch Telescope Mirror Blank- 2 lb Gugolz Pitch- 1 1/2 lb Silicon Carbide #60- 1 lb Silicon Carbide #80- 3/4 lb Silicon Carbide #120- 3/4 lb Silicon Carbide #220- 1/2 lb Silicon Carbide #320- 1/2 lb White Aluminum Oxide 25 Micron- 1/4 lb White Aluminum Oxide 15 Micron- 1/4 lb White Aluminum Oxide 9 Micron- 1/4 lb White Aluminum Oxide 5 Micron- 1/2 lb Cerium Oxide Polish. The first and key piece that you will need to make for your telescope is the primary, or objective, mirror. Conical mirrors in 6, 8, 10, 12.5, 14.5 and 16 inch … Mount the secondary mirror to … Conical Mirror Specifications Do you want to build your own telescope? The Explore Scientific Generation II 10 inch Truss Tube Dobsonian Telescope isn't just the key to … Something went wrong. $499.99. 2Inch 90-Deg Dielectric Mirror Diagonal for Astronomical Telescopes High Quality. NOW! Our 10-inch Dobsonian Apertura telescope is the perfect size for stargazing. The 6-inch Primary we are using. For more recent exchange rates, please use the. $19.99 shipping. The GSO 10" f/8 Ritchey-Chrétien Truss Tube Astrograph is a true RC telescope and will give you spectacular photo results also with large format camera sensors. This page was last updated: 12-Feb 04:39. We provide 6 inch, 8 inch, 10 inch, and 12 inch telescope mirror blanks in standard 3/4" thickness, and larger mirror blanks up to 20 inches in 1" thickness. B270 glass is equivalent to BK7 in performance and optical quality. If this is your first time building a telescope you may want to start with a 6 inch or a 8 inch telescope mirror kit. You will see a lot with a 10 inch, it can keep you busy for a long time. $35.85 shipping. This video shows all the steps involved in slumping a fast primary mirror for a telescope. $19.99 shipping. For the best experience on our site, be sure to turn on Javascript in your browser. Pre-Owned. Is there a perceptible difference between an 8 inch and a 10 inch reflector or should I save my money for something else? SUPREMAX 33 is a borosilicate Pyrex equivalent, and is an excellent alternative for telescope mirror blanks. SkyWatcher Flextube 250 SynScan Dobsonian 10-inch Collapsible Computerized GoTo Large Aperture Telescope, White, Model: S11810 4.3 out of 5 stars 23 Sky-Watcher Flextube 200 Dobsonian 8-inch Collapsible Large Aperture Telescope – Portable, Easy to Use, Perfect for Beginners #### 12 inch THIN EDGE PYREX Telescope Mirror Blank #### $310.00. $10.00 shipping. If this is your first time building a telescope you may want to start with a 6 inch or a 8 inch telescope mirror kit. All of the mirror blanks we sell are individually tested to be free of internal strain. From United States +C $64.84 shipping. This model boasts a 10-inch mirror and comes complete with an additional set of night watching accessories. This will get you on a great start to building your own telescope. Please note that the 8, 10 and 12.5 inch mirrors come all required mounting hardware. After a couple of weeks of research and shopping around, I decided the 10-inch f/5.6 Discovery DHQ Newtonian reflector (Dobsonian) was exactly what I wanted. Once the final polishing and testing steps are completed you will send your mirror off to receive a reflective coaiting. $125.00. Russ Genet formed the Altaz Initiative group and invited us to brainstorm to develop 1-2 meter telescopes at one-tenth to one-hundredth the cost. Hubble 10, 12.5, 17, 20-inch CDK (Corrected Dall-Kirkham), and beyond: ... the SCT has been the industry-standard visual, film and small CCD imaging telescope for popular astronomy since the mid-70s. Please note that the 8, 10 and 12.5 inch mirrors come all required mounting hardware. The title for best dobsonian telescope for sale today goes to the Sky-Watcher 10” Collapsible Dobsonian Telescope. This kit includes your telescope mirror blank and all the abrasives, polish, and pitch needed to grind, figure and polish your telescope mirror. The GSO 10" f/8 Ritchey-Chrétien Truss Tube Astrograph is a true RC telescope and will give you spectacular photo results also with large format camera sensors. This Overall I'm happy. This page sums up my impressions so far. Secure the mirror cell to the telescope. 3.8 out of 5 stars 916. But also visual observing is a highlight with this powerful telescope. The base of the cell is anchored to the rocker box with … 3. The Apertura 10" f/4 Imaging Newtonian has a built-in cooling fan will help get you imaging faster! Purchase telescope mirror blanks here. L. An 10 inch aperture telescope does generally require some experience in telescope mirror making. 46K MILES!! Amazon's Choice for telescope mirror Ullman Devices HTC-2 High-Tech Telescoping Inspection Mirror, 2-1/4" Diameter, 6-1/2" to 36-3/8" Length 4.6 out of 5 stars 1,232 Everything from huge galaxies, nebulae and star clusters to smaller planetary nebulae, double stars, and millions of suns in the far off regions of space will be within the grasp of your telescope. Step #7: Place the secondary mirror into the spider. Each telescope should be ready to go out of the box when you receive it. Conical Mirror Specifications 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. Shop all available Dobsonian telescopes from High Point online today. Factory Style Manual Adjustment Mirror, Driver Side, Buy With Confidence, 90 Day Hassle Free Warranty, Amounts shown in italicized text are for items listed in currency other than Canadian dollars and are approximate conversions to Canadian dollars based upon Bloomberg's conversion rates. Email gordon@waiteresearch.com today. I'm selling only the OTA with the mounting rings so you can adapt it to your own mount. The larger the mirror the more detail a telescope will give. Skip to the beginning of the images gallery, Logo Copyright Firsthand Discovery, LLC 2011, Check out our tools page for plaster and tiles. However, the price of the mirror increases as the mirror gets larger. My first build was a conical 10 inch f/4.5 from R.F.Royce but he has since retired and out of business. I recommend a perimeter pusher cushion 1⁄ 2 inch wide and a gap between the pusher and puller of1⁄ 4 inch or more. You will grind your mirror blank with smaller and smaller abrasives until you have produced a spherical or paraboloidal surface. Buy a New 20" Waite Research Mirror. 10 Inch Telescope Mirror Kit Make your own 10 inch telescope mirror. The stand is tipped back by 10 degrees so that the mirror is aimed a little above horizontal. This low-vibration fan is mounted on the primary mirror cell and is powered by a battery pack that holds eight (8) AA batteries (batteries not included). I recommend a perimeter pusher cushion 1⁄ 2 inch wide and a gap between the pusher and puller of1⁄ 4 inch or more. The superior components include a 2-inch two-speed rack & pinion focuser make for precise focusing. But also visual observing is a highlight with this powerful telescope. See description on new 6, 8, 10 and 12.5" inch conical mirrors as well as 14.5 inch and larger mirrors for mounting methods. With a 20x/30x/40x eyepiece, 30mm objective lens and diagonal mirror, this Elenco EDU-41005 telescope makes it easy for your child to discover distant objects. Discovery 10" DHQ f/5.6 Dob Tim Vasquez. 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%. This is a quick summary of my experiences with my first Dobsonian telescope. Not only does this affordable astrograph excel as an astrophotography instrument, but the 10" f/3.9 Newtonian can also be used as a formidable visual telescope. The Sky-Watcher 10-inch telescope boasts a Dobsonian-style Newtonian design and is highlighted by a Crawford-style focuser which comes in at 2-inches with a 1.25-inch adapter, and delivers a f/5 focal length of 1200mm. + Update your shipping location ... 18 INCH Glass Reflector Telescope Mirror Lens Optical Optics 1” Thick. I like the conical mirror design because they do not flop or roll when tracking a satellite through the meridian with my Astro-Physics 900GTO mount. The Explore Scientific Generation II 10 inch Truss Tube Dobsonian Telescope isn't just the key to … Definition of the Cassegrain Telescope Available in three different sizes including a 10, 12, and 8-inch model giving consumers a wide price range to choose from. This kit Includes everything you need to grind your own top quality telescope mirror. Overall I'm happy. Using a horizontal vibrating lap to grind the top and bottom surfaces of a 10 inch telescope mirror blank flat and parallel. This While it may seem like an impossible task to complete on your own at home, it really is very possible to make a top quality instrument that can even surpass many telescopes that you can find at a store. Step #7: Place the secondary mirror into the spider. Starting from a rough glass blank, you can obtain an almost perfect parabola with surface errors in the range of 20 to 60 nm. Reflecting Telescope. September 9, 2020; By admin Filed Under Mirror; No Comments Gso parabolic primary mirror 10 f 5 stellafane the inch telescope company seven orion skyquest dobsonian mirrors atlas equatorial newtonian reflecting chinese 254mm bird jones reflector astro physics f14 6 maksutov high resolution obsession telescopes optics For the best experience on our site, be sure to turn on Javascript in your browser. This kit includes an 10 inch telescope mirror blank, all the silicon carbide grits, white aluminum oxide powders, gugolz pitch, and cerium oxide polish you will need to grind and polish an 10 inch telescope mirror all bundled in one spot. This is the stand that I developed for the 25 inch FR2.6 half inch thick meniscus mirror. It gathers and focuses the light you will be viewing, and it's size, weight and focal length set the major dimensions and performance characteristics of your telescope. This is a quick summary of my experiences with my first Dobsonian telescope. The telescope is transportabel and … $699.99. Amazon's Choice for telescope mirror Ullman Devices HTC-2 High-Tech Telescoping Inspection Mirror, 2-1/4" Diameter, 6-1/2" to 36-3/8" Length 4.6 out of 5 stars 1,232 With about 50 videos on mirror making and telescope building, Gordon's YouTube channel has accumulated over 2,400,000 views! This kit Includes everything you need to grind your own top quality telescope mirror. A 20-inch telescope mirror for sale will collect 6.25 times more light than an 8-inch telescope mirror will. The telescope is fitted with a stable Carbon Fiber Truss tube and a precise 3" dual speed Monorail focuser. It is not intended to be a complete step-by-step instruction set, but rather to document some of the design details and methods that were used.There are a lot of … We also carry a variety of books on telescope making that can teach you the full process if you need instruction. The process takes some time and patience but through a little knowledge and the law of averages you will produce an excellent telescope mirror. Hope to build my 2nd Newtonian scope. The mirror is made of B270 “water white” optical crown glass that is free of internal stress and striae. We manufacture telescopes and accessories such as telescope wheels, carrying cases, guiding computers, focusers, motors and motor controls and much more. Combined mirror, tip-tilt plate and back plate assembly prior to powder coating. Copyright © 1995-2021 eBay Inc. All Rights Reserved. Our blanks have the following standard characteristics: Precision annealed material (6 Mu or … It is finished off with an aluminum and silicon dioxide coating … SUPREMAX 33 is a borosilicate Pyrex equivalent, and is an excellent alternative for telescope mirror blanks. I will have it recoated if needed Astronomical Telescope Zoom 90X HD Outdoor Monocular Space Telescope with Tripod 360/50mm Spotting Scope for Kids Beginners - Uverbon. 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%. JavaScript seems to be disabled in your browser. Need materials for a grinding tool and/or polishing lap? This page sums up my impressions so far. $125.00. Using a horizontal vibrating lap to grind the top and bottom surfaces of a 10 inch telescope mirror blank flat and parallel. The 10" parabolic mirror on the AD10 is made from quality materials and is figured to 1/12th wave. Discovery 10" DHQ f/5.6 Dob Tim Vasquez. Read more. $10.00 shipping. Description A telescope is a key that unlocks a sense of adventure in the hearts of all of us, and few telescopes offer expert quality without the expert price tag in quite the same way as this telescope. If this is your first time building a telescope you may want to start with a 6 inch or a 8 inch telescope mirror kit. FREE SHIPPING!! Read here about the unique secondary mirror holder and collimation procedures . 10” (254mm) diameter, 1250mm focal length, f/5 focal ratio with surface accuracy of 1/12 wave. After a couple of weeks of research and shopping around, I decided the 10-inch f/5.6 Discovery DHQ Newtonian reflector (Dobsonian) was exactly what I wanted. A General Description of Conical Mirrors. The first and key piece that you will need to make for your telescope is the primary, or objective, mirror. For example, the puller for a 10-inch-diameter f/6 mirror with a blank thickness of 1.0 inch would have an inner diameter of 1.5 inches [(0.09 × 102)/(1 × 6)] and an outer diameter of 8.7 inches [10 × (0.97 – 1/10)]. In this article I will show how it is possible for the ATM to make his own Cassegrain telescope. 10 Inch Mirror Telescope. The mirror is made of B270 “water white” optical crown glass that is free of internal stress and striae. An 10 inch aperture telescope does generally require some experience in telescope mirror making. or Best Offer. Parabolic mirror: GSO offers very HIGH quality parabolic mirrors for the people who want to build their own telescopes or DIY project. Parabolic mirror: GSO offers very HIGH quality parabolic mirrors for the people who want to build their own telescopes or DIY project. See each listing for international shipping options and costs. B270 glass is equivalent to BK7 in performance and optical quality. Skywatcher 10 inch Dobsonian. My first build was a conical 10 inch f/4.5 from R.F.Royce but he has since retired and out of business. 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. Our blanks have the following standard characteristics: Precision annealed material (6 Mu or … or Best Offer. If you are thinking about moving up to a large aperture telescope mirror, we have a new Waite Research premium 20" mirror just for you. Literally, thousands of celestial objects will be visible with your 10 inch Dobsonian Reflector. Top Rated Seller Top Rated Seller. Secondary mirror for reflector telescopes. You can collect more light with a larger aperture. View cart for details. The 10… How well an observer is trained is almost as important as telescope size. Skywatcher 10 inch Dobsonian. Secure the mirror cell to the telescope. A 10-inch telescope mirror has a 10-inch or 250mm primary mirror. Resolution is also a function of primary mirror diameter. I like the conical mirror design because they do not flop or roll when tracking a satellite through the meridian with my Astro-Physics 900GTO mount. Russ Genet formed the Altaz Initiative group and invited us to brainstorm to develop 1-2 meter telescopes at one-tenth to one-hundredth the cost. $94.99. Extreme portability with quick set up and tear down, the 10-inch primary mirror with 1143mm of focal length Truss Tube Dobsonian is easily transported by almost anyone and occupies a very small space in a car for easy transport. 18 INCH Glass Reflector Telescope Mirror Lens Optical Optics 1” Thick. Mostly featured is my 12.5 inch f/20, however some photos are from a similar 10 inch telescope (this article is not intended to provide detailed instructions.) Number of bids and bid amounts may be slightly out of date. Consider a 10-12 degree Celsius difference: a 10 inch mirror with a fan running will take about 40 min to cool but a 12 inch mirror will take about 60 min. The 10" model uses .060" thickness vanes but there are only three of them so the total obstructed area is reduced. Its large 10" aperture and fast focal ratio will provide wondrous views of deep space objects, the planets and Moon, and sparkling star fields in both 2" and 1.25" telescope eyepieces. Save money and time by purchasing a telescope mirror kit. You can buy them at a hardware store. The new holder. The 13.2 inch [34cm] f3.0 mirror performs fabulously and needs but a simple mirror cell, ditto for the 10.5 inch [27cm] f2.7. The superior components include a 2-inch two-speed rack & pinion focuser make for precise focusing. Secondary mirror for reflector telescopes. This is a 10" spider prior to painting flat black.
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