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LSST PRIMARY/TERTIARY MIRROR (M1M3) ARRIVES ON CERRO PACHN May 11, 2019 – This morning, a unique astronomical mirror reached its new home in the Andes Mountains of Northern Chile. This incredible mirror will enable the Large Synoptic Survey Telescope (LSST) to catalog an estimated ~40 billion celestial objects—more objects than there are humans on earth.
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Grinding a Large Thin Mirror Introduction. Years ago amateur telescopes were made with mirrors of a relatively modest size. 6 and 8 inch telescopes were considered large. A 10 inch telescope might be the envy of a club or observing group. In the recent past people have learned how to make large mirrors.
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equipment (2 Nos.), related large tool polishing machines (2 Nos.), including all tools for grinding and polishing 1.5m circular mirror blanks (roundels). The Bidder shall also assist in the installation and set-up of the delivered equipment at the IIA/ITCC polishing facility, and transfer the required process
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Additionally, when a mirror is placed at an angle, it will sag under its own weight, thus large mirrors need to be stored horizontally so the sag is uniform over the entire surface.
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AGI also supplies Schott SUPREMAX 33 mirror blanks. SUPREMAX 33 is a borosilicate Pyrex equivalent, and is an excellent alternative for telescope mirror blanks. Our blanks have the following standard characteristics: Precision annealed material (6 Mu or less guaranteed) Edges diamond ground with a 220 grit finish. Dimensional tolerances +/-.010".
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Telescope Mirrors. At Orion Optics UK we pride ourselves on having some of the finest optical technicians anywhere in the world. The optics we produce are world renowned for being among the best available. 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
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A good starter size is the 150 mm (6) mirror. A 200mm (8) will also work. Most ATM books and websites recommend a Pyrex mirror blank, but in my opinion, annealed plate glass is better for this first, learn and practice mirror.It is cheaper, it is softer and grinds faster, needing less abrasives and with these small sizes, the low expansion glass like Pyrex has no practical (visible at
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Grinding the secondary is just like grinding any other optic except in minature. I ground the secondary with the workstand and worked the tool on top just like I would grind a larger mirror. This optic is small enough that a lens grinding machine could work well.
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Shows how to make a reflector mirror accurate to millionths of an inch, includes instruction on Mirror Grinding, making a pitch lap, polishing, testing equipment, testing and figuring, a mirror to a millionth of an inch. Correcting technique, telescope construction and mounting your telescope. Large (8.5 X 11 in.), 36 page, illustrated softcover.
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Each kit comes with a telescope mirror blank and all the abrasives (silicon carbide grits and white aluminum oxide powders), cerium oxide polish and pitch to grind and polish it to your specifications. Please note that our kits do not include a grinding tool or pitch lap. If you need materials for making a grinding tool or pitch lap, we have
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The new fixed-post grinding machine is working on the 14.75 quartz mirror. This video shows rough grinding on the blank, which is done to get the mirror to the exact focal length we want. This mirror will have a focal length of 60, which is F4. A steel-nut and die stone tool is fixed in place with a slight overhang over the edge of the mirror.
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Requires no special equipment just the telescope itself. Tests the entire optical system of the telescope. So I buy a 12 1/2 inch grinding tool and we pour a pitch lap on the grinding tool. They read the mirror and tell me an F6 mirror won't be hard to parabolize. Testing with the knife edge at the center of curvature they see the mirror
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telescope mirror grinding / polishing machine with . ABRASIVE PRODUCTS AVAILABLE ONLINE. We offer over 2,300 industrial quality abrasive products in the application categories listed below. Click on any product type listed in the application categories to proceed directly to that catalog page. Catalog pages show detailed product information
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Mirror grinding techniques There are many reasons for grinding your own mirror. Either you want a unusual size, or focal length, or to satisfy your curiosity, or to have the pride of achievement by fabricating something as precise as a telescope mirror. 300 mm Dobsonian This is my main telescope.
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Advanced Glass Industries is one of the world's largest suppliers of precision machined optical glass blanks. AGI maintains an extensive raw material inventory, and stocks a full range of optical materials manufactured by the world's best, most reliable suppliers, including Corning, Schott, Ohara, Heraeus, Pilkington, and Tosoh Quartz.
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20 F3.5 Telescope Mirror. Test results and roughing images for a 20 F3.5 primary. The fabrication of this 20 F3.5 telescope mirror was a little unusual. In almost all cases, I purchase mirror blanks that are pre-generated at the glass fab. That means that they grind the rough curve into the mirror's face before I receive the glass.
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The GMT is essentially forced into the horrendously complex design they've chosen, because the Steward Mirror Lab can only accommodate 8.2 meter mirrors; to build anything bigger requires combining multiple mirrors. Amateur telescopes, however, are MUCH smaller than 8.2 meters, and thus it's quite possible for an amateur to grind a 24, 36, or
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The mirror was cleaned out and moved into the integration hall in 2019, awaiting its turn on the grinding machines. GMT Segment 4 As of July 2019, Segment 4 has completed rear surface polishing and load spreaders are being attached.
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Jun 01, 2021About Orion Telescopes Binoculars. Since 1975 Orion Telescopes Binoculars has been offering telescopes for sale direct to customers. Now an employee-owned company, we pride ourselves on an unswerving commitment to best quality products, value and unmatched customer care. Our 100% satisfaction guarantee says it all.
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A good starter size is the 150 mm (6) mirror. A 200mm (8) will also work. Most ATM books and websites recommend a Pyrex mirror blank, but in my opinion, annealed plate glass is better for this first, learn and practice mirror.It is cheaper, it is softer and grinds faster, needing less abrasives and with these small sizes, the low expansion glass like Pyrex has no practical (visible at
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L-Size 2-End Gringing Machine. Axle precision core grinding machine. This model is psecially rsed for grinding sand (powder)of rough or precision grinding.Next step,use the grinding liquid to polish unti it becomes a shiny mirror surface. Finally,assemble them and inject the acrylic.PC lenses. 1100 (L)X950 (W)X1650 (H)m/m 450kg.
Get PriceHow to Make Your Own Telescope Mirror: [Fig 1] This is a large piece of glass a woman off Craigslist gave me. It was 40x40 and 0.75 thick. Its what I decided to use to make the mirror. Cutting it into smaller sections can be difficult but scoring it with a glass cutter
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The 60-inch telescope mirror on grinding machine, tipped forward for testing. A workbench with equipment is seen on the left-hand side; a chair is in front of the tilted mirror. Photograph probably taken at the Mount Wilson Observatory's optical laboratory, Pasadena.Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino
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Please see the Buy Telescope Mirror Blanks page for low prices on plate glass mirror blanks. If you'd like to buy a complete mirror grinding KIT, with all abrasives and grinding tool included, please see the Buy Telescope Mirror Kits. website for the lowest prices on plate glass telescope mirror grinding
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The Kutter Schiefspiegler. Yolo Telescopes. Grinding Glass. An ATM's Grinding Barrel Top. Grinding Your Telescope Mirror. Polishing Your Telescope Mirror. Glass Notes. Grit and Microgrit Grading Conversion Chart at READE. Making a tile on plaster tool.
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A look at a 15 Telescope Mirror, with Ronchi history. The fabrication of this 15 F4.5 primary telescope mirror began with a planoplano blank. I used my own diamond grinding equipment to generate the rough curve here. After the generation, I poured a steel grinding tool and used #40 silicon carbide abrasive to get the mirror close to the
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Please see the Buy Telescope Mirror Blanks page for low prices on plate glass mirror blanks. If you'd like to buy a complete mirror grinding KIT, with all abrasives and grinding tool included, please see the Buy Telescope Mirror Kits. website for the lowest prices on plate glass telescope mirror grinding kits.
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10 Inch Mirror Blanks, 3/4 Thick: $55 + SH (16);Shipping prices are to the USA - not shipping outside the US, sorryCombined shipping is possible - Write. For a complete mirror making KIT, with all abrasives, polishing compounds, pitch, and grinding tool included, please see our Buy Telescope Mirror Kits website for great prices on plate glass
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EQUIPMENT FOR MAKING A TELESCOPE MIRROR (SUGGESTED) - Grinding Materials - Sagitta gauge (to measure the center depth) - 8 containers to hold the grinding compounds - 1 small container to hold the polishing compound - Spray Bottle for water - Small clean brush to apply polish - Towel or similar to wrap the mirror in for protection
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Aug 09, 2017Grinding machine for mirrors up to 42 inches [1.1m] in diameter. Can be configured for spin or stroke work.
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