mirror grinding reflector

Mirror grinding - scope making

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. You could also live in a part of the world where telescope optics are not commonly available, and this might be the only way to have a telescope.

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Grind and Polish a Dobsonian/Newtonian Telescope Mirror ...

Your mirror might look pretty smooth and nicely finished at the end of fine grinding, but in reality it's pretty rough. You'll need to polish it to achieve the ultimate smoothness required to ensure that it reflects all the photons from cool things in space appropriately. To do this, you'll pour what's called a pitch lap. As with everything else, this goes back to Isaac Newton - it's crazy that heating and pouring basically tree

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Joy of Mirror Making: Rough Grinding - BBAstroDesigns

Grinding the curve into the mirror face can be done by one of the following approaches: Ceramic tiled tool ground against the mirror face. Glass tool ground against the mirror face. Ring tool. Motorized grinding wheel on the end of along boom that is anchored that is moved back and forth across the mirror face.

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Mirror Grinding - Take A Class Or DIY? - ATM, Optics and ...

11/05/2017  When I ground my first mirror the only guidance I had were ATM book 1 and Making Your Own Telescope by Allyn J. Thompson. I ground, polished, and figured the mirror on top of an old washing machine. I used the Focault knife edge test when figuring the mirror. Then I got together all of the chemicals required and chemically deposited a silver layer on the mirror. My second mirror was

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mirror grinding kit grind and polish telescope mirror at ...

All our Mirror Kits contain a Pilkington Float Glass mirror blank and Grinding Tool. These arefinished with fine ground edges. 180 grade first stage ginding powder. 400 grade ginding powder. 303 grade smoothing powder. Top quality Cerium Oxide Polishing powder.

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Optical Testing of Parabolic Mirrors : 9 Steps (with ...

04/09/2012  After hogging out the mirror then you use finner and finner grinding grits to remove the scratches in the mirror from the previous step. During this phase you are averaging out your strokes to keep the mirror figure roughly spherical. As soon as you transition to polishing is where I begin to take real measurements and good records. Each person's hand pressure is different so you must 'learn' how your particular strokes are changing the mirror figure

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Telescope Mirrors, Blanks, Secondaries, Grinding Materials ...

The strehl percentage indicates the amount of light which is returned by the mirror, within the central peak of the Airy Disk. One of the most expensive mirror makers around is R. F. Royce. R. F. Royce does not let his mirrors out unless they have a strehl of at least 96%. During mirror making, a very high strehl measurement can be case of luck. Testing and correcting the mirror until the sweet spot is achieved.

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Telescope Mirror Blanks / TelescopeMirrorBlanks.Com ...

There are several advantages to using thin plate glass mirror blanks for grinding your telescope mirror: * Thin mirror blanks are less expensive, allowing more people to afford the hobby of grinding their own telescope mirror. * Choosing a thin mirror blank gets you more aperture for your dollar.

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Zambuto Optical Company - Newtonian Telescope Mirrors

Zambuto Optical Company is located in a rural area and is functionally self-sufficient in almost all circumstances. Please don't hesitate to contact us if you have questions. Otherwise, our schedule goes on at a normal pace.

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Telescope Mirrors - Orion Optics

Telescope MIrror Sets to purchase online. 4 Grades available: Standard, Professional, Research and Ultra. World class optics.

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mirror grinding kit grind and polish telescope mirror at ...

All our Mirror Kits contain a Pilkington Float Glass mirror blank and Grinding Tool. These arefinished with fine ground edges. 180 grade first stage ginding powder. 400 grade ginding powder. 303 grade smoothing powder. Top quality Cerium Oxide Polishing powder. Part No. Data Sheet: Description: Product Type: Thickness (MM) Specification: Unit Price : QTY: BASKET: QUOTE: M-KIT-150: 150mm

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Telescope Mirror Blanks / TelescopeMirrorBlanks.Com ...

There are several advantages to using thin plate glass mirror blanks for grinding your telescope mirror: * Thin mirror blanks are less expensive, allowing more people to afford the hobby of grinding their own telescope mirror. * Choosing a thin mirror blank gets you more aperture for your dollar. * Telescope mirrors made from thin mirror blanks take less time to thermally equalize with the ...

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Telescope Mirrors, Blanks, Secondaries, Grinding Materials ...

Mirror Size (ins) Aluminium + Quartz R>91% Aluminium Enhanced R>95% Silver Enhanced + Protected R>98% 6" $210AUD $245AUD $275AUD 8" $270AUD $305AUD $342AUD 10" $330AUD $365AUD $409AUD 11" $360AUD $395AUD $443AUD 12.5" $405AUD $440AUD $493AUD 14.5" $465AUD $500AUD $560AUD 16" $510AUD $545AUD $611AUD 17.5" $555AUD $605AUD $678AUD 18"

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Mirror Recoating - Orion Optics

The reason is Hilux will faithfully reproduce the form of the mirror’s surface, warts, bumps, scratches, micro grinding pits and every other thing which can occur on a glass surface. Please do not think that a scratched or damaged surface can be magically removed by re-coating, they won’t. In reality, because these marks may have been somewhat ‘camouflaged’ and hidden amongst the old ...

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King Telescopes, telescope mirror blanks, using both ...

Not an impressive website. However, we are not in this for a profit. Our intent is to provide a source for lower cost, mirror blanks, and supplies for grinding your own telescope mirror. If I had known as a kid how, well not easy, but indeed not as hard as I would have expected to grind my own mirror. I sure would have had a much nicer scope then. At present we have a supply of high quality ...

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Telescope Mirrors - Orion Optics

Telescope MIrror Sets to purchase online. 4 Grades available: Standard, Professional, Research and Ultra. World class optics.

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Protected Silver Mirrors - Thorlabs

05/04/2021  Our Ø19 mm mirror is specifically designed to fit our Polaris ... If we modify an already coated mirror by grinding it down to a smaller thickness, it is very likely that the grinding process will introduce stress to the part, reducing the flatness from 1/10 wave to 1/4 wave. I will contact you directly to discuss your application. achmyro (posted 2011-02-03 16:24:44.0) Is it possible to get ...

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How to Make Your Own Telescope Mirror - Instructables

After your finished with fine grinding the mirror you will need to make yet another tool. This tool is called a pitch lap. It is made the same way as the penny tool you made to do the fine grinding except instead of pennies you will use "Pitch". [Fig 6] Here is a photo that shows the tool being pressed against the warmed pitch. It is resting on my mirror with aluminum foil between the tool and ...

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Telescope Making Supplies - willbell

Throughout the grinding and final lapping stages, the objective has been to reduce pits and scratches to the smallest possible size. However, no amount of grinding can produce a surface smooth enough or sufficiently transparent to meet the needs of a first-class telescope objective. Different techniques are needed. While there is still considerable discussion on the subject, it appears that ...

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Optic Wave Laboratories - Optical Coatings

Optic Wave Labs offers the services of its in-house coating facility to the public. We provide standard aluminum , semi-enhanced aluminum, enhanced aluminum, gold and silver coatings. Our automated deposition system can accommodate telescope mirrors up to 22 inches in diameter. We coat new mirrors as well as re-coat your existing mirror.

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Mirror Recoating - Orion Optics

The reason is Hilux will faithfully reproduce the form of the mirror’s surface, warts, bumps, scratches, micro grinding pits and every other thing which can occur on a glass surface. Please do not think that a scratched or damaged surface can be magically removed by re-coating, they won’t. In reality, because these marks may have been somewhat ‘camouflaged’ and hidden amongst the old ...

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Newport Glass Works, LTD. Grinding, Polishing and

Placing the mirror face up and grinding with a moderate "W" stroke will also move the curve toward the edge, and tends to produce a more spherical surface. Leaving the mirror grossly hyperbolic will make fine grinding difficult. Fine Grinding . We've all heard stories about fine grinding taking hundreds of hours. If done correctly, however, fine grinding takes a fraction of this time, and in ...

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Swayze Optical! - Home Page

Grinding and polishing the mirror is the most difficult part of making a telescope. And the most critical. Mirror-making is a hobby that has been around for many years, and many people have put their hands to the task, but it is time consuming, requiring a great deal of skill, patience and perseverence. Especially when the mirror gets big. And especially if you strive for excellence. One of ...

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Telescope Mirrors - Orion Optics

Telescope MIrror Sets to purchase online. 4 Grades available: Standard, Professional, Research and Ultra. World class optics.

More

How to Make Your Own Telescope Mirror - Instructables

After your finished with fine grinding the mirror you will need to make yet another tool. This tool is called a pitch lap. It is made the same way as the penny tool you made to do the fine grinding except instead of pennies you will use "Pitch". [Fig 6] Here is a photo that shows the tool being pressed against the warmed pitch. It is resting on my mirror with aluminum foil between the tool and ...

More

Protected Silver Mirrors - Thorlabs

05/04/2021  Our Ø19 mm mirror is specifically designed to fit our Polaris ... If we modify an already coated mirror by grinding it down to a smaller thickness, it is very likely that the grinding process will introduce stress to the part, reducing the flatness from 1/10 wave to 1/4 wave. I will contact you directly to discuss your application. achmyro (posted 2011-02-03 16:24:44.0) Is it possible to get ...

More

Optic Wave Laboratories - Optical Coatings

Optic Wave Labs offers the services of its in-house coating facility to the public. We provide standard aluminum , semi-enhanced aluminum, enhanced aluminum, gold and silver coatings. Our automated deposition system can accommodate telescope mirrors up to 22 inches in diameter. We coat new mirrors as well as re-coat your existing mirror.

More

Parabolizing a Telescope Mirror - BBAstroDesigns

The goal of parabolizing is to produce a mirror that focuses light perfectly at the highest powers. Our mirror must meet the following two criteria: 1. The wavefront at the eyepiece cannot vary more than 1/4 wave of green light peak to valley and should be much less than this over much of the wavefront. Don't forget to halve this when talking about the mirror's surface and adjust for any red ...

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Aluminum Mirror-polished aluminum mirror sheetChina ...

The mirror aluminum plate are aluminum plate taking on a mirror effect by rolling, grinding and a variety of methods. Usually abroad the mirror aluminum plates are rolled to produce roll materials or plate; The mirror aluminum plate is just a general term, and in accordance with the surface polish level, it can be classified into three types, i.e. 800 standard polish, 850 high polish and 890 ...

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Buy Telescope Mirrors - Jim's Mobile

10" Mirror Set 250mm aperture f/5 focal ratio 63mm secondary MIRSET1050 $349 Purchase from Farpoint: 8" Mirror Set 200mm aperture f/6 focal ratio 50mm secondary MIRSET0860 $249 Purchase from Farpoint: Primary and Secondary Mirror Sets for Your DIY Projects. Guan Sheng Optical (GSO) Manufacturer's Specs Parabolic mirror with matching secondary Diffraction limited BK7 glass 1/16

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Mirror form grinding of free-form surface of reflector ...

Mirror form grinding of free-form surface of reflector mould core . XIE Jin,RUAN Zhao-wu(School of Mechanical Engineering,South China University of Technology,Guangzhou 510640,China) In order to assure form accuracy and surface roughness of optic free-form surface of injection mould core,form grinding of free-form surface was conducted in CNC precision grinder by use of precisely dressed

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Dick Parker's Telescope Mirror Workshop: Refractor ...

The process is exactly like grinding a mirror at this stage. The only difference is that the first job is to work the wedge out of each piece. Correction for wedge is done by favoring pressure along the thick side of the element for some of the grinding. Also it is important to watch carefully the segitta and overall thickness of the glass. (right) Jim is checking the wedge of his crown ...

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Amateur telescope making - Wikipedia

Grinding a mirror using an abrasive and a smaller tool over 300 mm mirror ("ATM Korenica 2006", in Korenica, Croatia) Since the Newtonian reflector is the most common telescope built by amateur telescope makers, large sections of the literature on the subject are devoted to fabrication of the primary mirror .

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Mirror Recoating - Orion Optics

The reason is Hilux will faithfully reproduce the form of the mirror’s surface, warts, bumps, scratches, micro grinding pits and every other thing which can occur on a glass surface. Please do not think that a scratched or damaged surface can be magically removed by re-coating, they won’t. In reality, because these marks may have been somewhat ‘camouflaged’ and hidden amongst the old ...

More

Swayze Optical! - Home Page

Grinding and polishing the mirror is the most difficult part of making a telescope. And the most critical. Mirror-making is a hobby that has been around for many years, and many people have put their hands to the task, but it is time consuming, requiring a great deal of skill, patience and perseverence. Especially when the mirror gets big. And especially if you strive for excellence. One of ...

More

Protected Silver Mirrors - Thorlabs

05/04/2021  Our Ø19 mm mirror is specifically designed to fit our Polaris ... If we modify an already coated mirror by grinding it down to a smaller thickness, it is very likely that the grinding process will introduce stress to the part, reducing the flatness from 1/10 wave to 1/4 wave. I will contact you directly to discuss your application. achmyro (posted 2011-02-03 16:24:44.0) Is it possible to get ...

More

Optic Wave Laboratories - Optical Coatings

Optic Wave Labs offers the services of its in-house coating facility to the public. We provide standard aluminum , semi-enhanced aluminum, enhanced aluminum, gold and silver coatings. Our automated deposition system can accommodate telescope mirrors up to 22 inches in diameter. We coat new mirrors as well as re-coat your existing mirror.

More

Parabolizing a Telescope Mirror - BBAstroDesigns

The goal of parabolizing is to produce a mirror that focuses light perfectly at the highest powers. Our mirror must meet the following two criteria: 1. The wavefront at the eyepiece cannot vary more than 1/4 wave of green light peak to valley and should be much less than this over much of the wavefront. Don't forget to halve this when talking about the mirror's surface and adjust for any red ...

More

In a reflecting telescope (Cassegrain), is there a ...

The Cassegrain reflector is named after a published reflecting telescope design that appeared in the April 25, 1672 Journal des sçavans which has been attributed to Laurent Cassegrain. Similar designs using convex secondaries have been found in the Bonaventura Cavalieri's 1632 writings describing burning mirrors and Marin Mersenne's 1636 writings describing telescope designs. James Gregory's ...

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Buy Telescope Mirrors - Jim's Mobile

10" Mirror Set 250mm aperture f/5 focal ratio 63mm secondary MIRSET1050 $349 Purchase from Farpoint: 8" Mirror Set 200mm aperture f/6 focal ratio 50mm secondary MIRSET0860 $249 Purchase from Farpoint: Primary and Secondary Mirror Sets for Your DIY Projects. Guan Sheng Optical (GSO) Manufacturer's Specs Parabolic mirror with matching secondary Diffraction limited BK7 glass 1/16

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