WEBApr 25, 2017 · You can make the simplest radio telpe using an ordinary satellite dish antenna and a signal strength meter to monitor the sun. Gather your materials and mount the satellite dish antenna to a rotatable Lazy Susan. Either new or used parts will work just fine depending on your budget. Use the standard dishmounting hardware and the Lazy .
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WEBAug 15, 2019 · I made the overarm from " steel tube, cut and fitted to size. Buttwelded, cleaned up with a grinder, painted and trial fit. It seems too low, but I will build sandwiched plywood layers, glued together and put everything up on that. You do not have the required permissions to view the files attached to this post.
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WEBNov 17, 2023 · Dielectric Coatings. Silver Coatings. Standard aluminum coatings are by far the most common coatings for mirrors today, and most mirrors have either standard aluminum or aluminum that has been slightly enhanced chemically. They're deposited on the mirror in a vacuum chamber in one go, and the typical reflectivity is around 8993%.
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WEBJan 16, 2016 · A second advantage of the honeycomb mirrors is their strong legacy, including use in what is currently the world's largest telpe, the Large Binocular Telpe here in Arizona.
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WEBAnother way to look at is to consider how many waves of light the mirror needs to remove in going from spherical to parabolic. A 10 inch [25cm] F5 changes by waves of green light either by lowering the center or by lowering the edge. Parabolizing by lowering both center and edge removes waves of glass.
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WEBPage 1 of 2 Grinding your own mirror How is it possible to get accuracy in the nm? posted in ATM, Optics and DIY Forum: So I have read forum questions answers on topics such as whether it is possible to use a 3D printer to design and print out a telpe mirror, or design an array of paraboloids this way for a segmented design, and the .
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WEBIntroduction. Grit is a generic name for the abrasive particles used with a hard tool in rough and fine grinding. Polish (or Polishing Compound) is a generic name for the abrasive used with a soft Pitch tool in polishing and figuring. Grit and Polish differ mainly in particle size and the type of tool they are used with.
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WEBThis kit includes a 6 inch telpe mirror blank, all the silicon carbide grits, white aluminum oxide powders, gugolz pitch, and cerium oxide polish you will need to grind and polish a 6 inch telpe mirror all bundled in one spot. This will get you on a great start to building your own telpe. Skip to the end of the images gallery.
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WEBMay 7, 2011 · It gives detailed information on mirror grinding and on building three different telpes, including a 10inch Newtonian and a 12inch Cassegrain. The prose is a bit formal, perhaps due to its translated (from French) origin. The Dobsonian telpe is given only a cursory treatment, but over all, this is still a pretty good book.
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WEBMay 28, 2016 · Documenting the telpe build, including mirror grinding and figuring, and construction of the Renegade telpe body. Part 1 includes prepping the mirro...
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WEBAstronomical (mirror blanks, kits, grinding polishing material, finished components, supplies) Bent or Slumped Glass ( for instrumentation, fixtures, helicopter light covers, camera windows, telpe mirrors, infrared mirrors, etc.) Chemically Strengthened Glass. Colored Optical Filter Glass (by manufacturers)
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WEBCutting telpe mirror blanks out of a thick glass tabletop ... This is my homebuilt edge grinding machine for grinding down my homecast mirror blanks. Click to see the whole project. This is a inch diameter, inch thick, lightweight honeycombback telpe mirror blank that I made myself. The blank only weighs 10 lbs, 4 oz.
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WEBAug 29, 2007 · aluminium telpe mirror posted in Beginners Forum (No Astrophotography): In amateur telpe making, telpe mirrors, as I understand the process, are made by rubbing two vertically stacked disks of glass against one another until the lower disk has the desired concave shape. The mirror is then polished smooth and .
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WEBAfter making one or two paraboloidal mirrors for Newtonian telpes, many amateur telpe makers turn their thoughts toward more advanced projects. Often they are attracted to making a refractor lens, but lack the information needed to do the job. ... and thus won't describe the basic processes of grinding and polishing glass, or testing an ...
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WEBLikewise, plastic is nowhere near thermally stable enough for use in a telpe mirror and will deform with different ambient temperatures. Most people who make their own mirrors will get a glass blank of lowexpansion glass and grind + polish it using special tools and techniques, and then get it silvered (though silver is rarely used ...
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WEBOct 6, 2021 · ATM Amateur Telpe Making in INDIAFor those who are passionate about learning How to build their own telpe https:///AmateurTelpeMakingFor b...
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WEBFor rough grinding a 6" mirror, about 1/2 teaspoon of grit is used per wet. With finer grits, proportionately less grit is used per wet. Grits in the25 micron range are often premixed with water to form a slurry, and water and grit are squirted onto the work together from a plastic squeeze bottle (not a spray bottle). Sprinkle on Grit.
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WEBThis kit includes an 8 inch telpe 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 8 inch telpe mirror all bundled in one spot. This will get you on a great start to building your own telpe. Skip to the end of the images gallery.
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WEBJul 3, 2014 · Polish the outer area increasing the final RC to match the center .Polish the edge and center and keep the same RC . Or call the edge good and polish the rest down and shorten final RC .The way most people who correct mirrors is to get a good edge and then deepen the whole mirror shorten the final RC .Hope that helps. →.
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WEBDiameters from ″ to 18″. Antares Optics offers an extensive selection of secondary mirror sizes from small ″ diameter minisecondaries for short tube refractors all the way up to massive 18″ secondaries for giant observatory telpes. Common sizes like 2″, 3″, 4″ and 6″ secondaries are in stock and ready to ship today.
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WEBJan 26, 2012 · Astronomers want increasingly large telpes to peer into the depths of space. To build a solid telpe mirror nearly 30 feet across, you need an oven that heats to 2,100 degrees Fahrenheit ...
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WEBStart with one of our telpe mirror kits. Each kit comes with a telpe 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 specifiions. Please note that our kits do not include a grinding tool or pitch lap.
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WEBThe two most common beginners' mirrors, the 6" f/8 and 8" f/6, both have 48" focal lengths. Use this formula to calculate your target sagitta: Sagitta (s) = Mirror_Radius2 / ( 4 × Focal_Length ) = r2 / 4F. or use our Telpe Formula and Design Comparator to do the math for you. If you have measured a Sagitta and want to know the resulting ...
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WEBNov 4, 2022 · "Amateur Telpe Making, Book 1″ by Albert Ingalls has a complete description of how to make such a telpe, including grinding and polishing the mirror.
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WEBRough Grinding. Unless the mirror comes pregenerated, the initial curve will have to be ground into the mirror. A ring tool of half the diameter of the mirror used on top of the mirror's flat face with the coarsest grit will rapidly grind a spherical curve into the mirror. Grinding a 6 inch [15cm] mirror to F/ using a ring tool.
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WEBGrinding,Polishing and Figuring Part 2 Polishing. 8610 CENTRAL AVE, STANTON, CA 90680TEL. * FAX * EMAIL Thin Telpe Mirrors. Part 2 Polishing. Abridged from an article appearing in Telpe Making #13 Provided: Courtesy of Astronomy .
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WEBFeb 14, 2015 · It's easy to tell with a mark on the edge of the mirror, and often even from the "flower" pattern in the cerium oxide. I rotate the mirror on the table often. During figuring I make sure to put the mirror back on the table in a different orientation after testing. Just finished a " f/3 that was pretty thin (" edge) and it turned out fine.
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WEBNov 5, 2021 · One last thing, is the final shape of the mirror. The curve that best focuses the light of a telpe mirror is the parabola. This curve is a bit flatter than the sphere. Right now, if you have been consistent in your grinding, the shape of the mirror surface is spherical, more or less. There are two ways to change that into the parabolic shape.
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