WEBJust like our Stellafane mirror class, these groups will help you learn how to make a telpe mirror, and provide guidance, instruction, and mentoring to help you with your project, and connect you with knowledgeable ATM's to answer your questions. ... NCA Telpe Making and Mirror Grinding Classes Twice Weekly on Tuesday Friday .
WEBRichard F. Caris Mirror Lab tour tickets are available for the summer. Please read below as our tour has changed. For inquiries, the best method to reach us is by sending an email message to Our phone number has changed to . We will meet at the lobby of Steward Observatory and begin our tour at the Steward ...
WEB1. Clean: Make sure your plaster disk is clean and you are using a glass substrate or tile tool, clean the surface with turpentine. 2. Build a Dam: Using 2" wide masking tape, build a dam at least 3/4" high around the edge of the disk to hold the pitch in when you pour it. Leave a tab at the end by to facilitate later removal.
WEBThis is the focus of all your work you will turn this flat piece of glass into an accurate parabolic telpe mirror. We recommend a full thickness Pyrex blank for mirrors up to to 12" in size. ... in various grades, are used as an abrasive between the mirror and tool to grind the glass. Pitch is used to make a soft, conforming pitch lap for ...
WEBMar 19, 2005 · Placing the tiles is simple. First draw a circle on white paper the size of your mirror, glue each tile with white glue on the paper with the grinding side of the tiles facing the paper. Leave a gap of about 1/8 to ¼ inch between each tile, resembling the facets of a pitch lap (See pictures).
WEBOct 6, 2021 · ATM Amateur Telpe Making in INDIAFor those who are passionate about learning How to build their own telpe https:///AmateurTelpeMakingFor b...
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.
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.
WEBRough Grinding. The first milestone is putting a curve into the mirror face. The curve's depth dictates the mirror's focal length. The curve should be spherical. Creating the curve can be done by several methods: The curve is ground into the mirror face using a grinding tool. The curve is pregenerated for you.
WEBSharing how I made a simple turntable to grind a telpe, I share the mirror kit I bought 6in plate glass with various carborundum grits. Ne...
WEBThis exercise is not intended to make a perfect piece of optics, but just to show the principle of the methods used in practice and to convince our students that amateur telpe making is surprisingly simple and accessible. Further technical details may be found in many books on amateur telpe making.
WEBFeb 19, 2013 · For a 12 inch working by hand I can do the grinding in one afternoon if it is generated . Polishing should not take more than 10 hrs . Get it all polished out your work is half done. Testing and knowing what to do takes skill and should not be understated . No harm in having a pro test it .
WEBOct 23, 2022 · Grinding mirrors, especially deepening the mirror with course carbo, I always push the mirror using very long Wstroke most of the time concentrating on the edge of the tool. Thinking about 'concentrating on the edge of the tool', (while I was grinding.. 😁 )I thought why not work a fully on the edge of the tool avoiding the .
WEBJun 4, 2018 · For a starter DIY telpe for a budding astronomer, build a Galilean telpe with a focus of 9x. With this powerful telpe, you see features on Earth's moon and Saturn's rings as a disk. SCIENCE . Biology. Cells ... Spend the bulk of your money on a big mirror, eyepiece lenses and big focuser that will take 1 ¼ inch or 2 inch .
WEBJul 1, 2020 · Large telpe mirrors are made by spinning a disc of molten glass so its surface assumes a parabolic shape, and then slowly cooling it while spinning so it retains that shape after it solidifies. Mirror blanks up to ten meters in diameter are routinely cast this way. After the mirror blank is finished, it is placed under a fouraxis polishing ...
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 .
WEBThis kit includes an 10 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 10 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.
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.
WEBThe first thing I built was an extension that sits in the middle of the turntable to raise the working surface above the height of the dam. It was made from an 18 inch diameter tabletop and some scrap lumber. I drew concentric circles on the top of the tabletop in the sizes of common telpe mirror blank diameters.
WEBStep 6: Measure the Sagitta. Continue grinding until you get the desired curvature. To estimate the curvature, we will use a dial indior to measure the sagitta. If you want to build a telpe for planets and moon observation, you will need a longer focal ratio (F/8 or higher). This means a shallow mirror.
WEBStep 3: Building the Mirror Mount. A mirror mount is needed to hold the mirror during testing. If the mirror is a 'thin' mirror ( the thickness is much less than 1/8th its diameter) then the mount must hold the mirror without deforming it. The weight of the glass can deform a thin mirror.
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)
WEBThe MoM is a marvellous machine due to its simplicity and yet refined design. It is extremely flexible accommodating mirror sizes from 4 inch up to 20 inch (with slight modifiions) and can be used for all three steps necessary in producing a mirror. That is you can use it to grind, polish and figure your optics.
WEBJan 27, 2012 · The master craftsman, Roger Angel, who has been making telpe mirrors for 30 years, or its the technicians arranging—arranging not simply throwing into the mold—chunks of glass (pictured above), or those grinding and polishing the mirror, success depends on just knowing when you've done it right. Or, as Angel says, "Not .
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%.
WEBExplore the cosmos with Zight's precision telpe mirror blanks, perfect for distributors and astronomy enthusiasts. Click to buy now! Zight Mirror Blanks. We are open for business; sales +1 ; ... Soda lime glass is ideal for mirror grinding tools and many of our customers now prefer using a glass tool over a ceramic tile ...
WEBJan 30, 2012 · An apparatus he built spins the liquid into the shape of a concave mirror, a nonreflective blank mirror that can be coated with aluminum for reflectance. Every was in high school when he began looking for an alternative to grinding glass telpe mirrors. The process of grinding a 14inch mirror for the telpe he was building inspired him ...
WEBCreating a telpe mirror is more than just grinding the appropriate shape into the mirror. The most important part is figuring the mirror to the appropriate prescription, which requires having an appropriate test mechanism (to verify the prescription) as well as a diagnostic mechanism (to identify which parts of the mirror need correction). ...
WEBMake Your Own Telpe Mirror. Saturday mornings in January February. Cure that cabin fever with the company of other astronomy enthusiasts as you grind your own mirror. The workshop is held at my home in Tolland, CT and runs from 9am to noon during the months of January and February. Under the workshop concept you choose your own .
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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 ...
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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