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How To Grind A Telescope Mirror

Mirror Grinding Take A Class Or DIY ATM Optics and:

May 11 2017 Read Jean Texereau How to Make a Telescope even if you do find a good mentor to work with. Its a classic very well written and the methods he describes are still spot on in year 2020. I would recommend NOT starting with a thin mirror a really big mirror or a really fast mirror. An 8 inch f6 or even 6 inch f8 is a great starting point.

Mirror Grinding Machine:

My Mirror Grinding Machine. For a long time Ive wanted to build a machine for grinding telescope mirrors. Dennis Rechs M-o-M designs finally inspired me to just get up and do it. Over the years Id been collecting motors gear boxes pulleys etc. Most of them came from industrial junk yards.

Astronomy Making a Mirror El Camino:

Preparing the Mirror Surface. Four stages of preparation are required before beginning to shape the mirror into a paraboloid. The purpose of the preparation is to make the surface of the mirror progressively smoother. Telescope mirrors have the smoothest surfaces ever made. The highest peaks and lowest valleys on the mirror surface must be .

Grinding your own mirror How is it possible to get:

Dec 31 2016 Page 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 amp answers on topics such as whether it is possible to use a 3D printer to design and print out a telescope mirror or design an array of paraboloids this way for a segmented design and the answers have been no the 3D printers dont

Grinding own mirror gives you a spherical or a parabolic:

Aug 27 2012 Share. Posted August 24 2012. The natural mirror grinding process will create a sphere. The first part of making a mirror is to grind and polish to a sphere of the required focal length. Then the mirror is parabolised by using special polishing strokes that changes the figure from sphere to

Making a homemade mirror grinding machine ATM:

Mar 06 2006 Gordon will know more about the math for different mirrors and different sizes. I recall for mine it was about a 70 tool diameter. The bucket Gordon used to make the tile tool was 8 1516 70 of 12.5 ends up at 8 34 . Looking back at my notes I used the tile tool primarily at the 70 zone of the mirror.

How I make Telescope Mirror Blanks:

It is a fine-looking near full-thickness 10 inch diameter blank that I intend to grind and polish into a 1st class telescope mirror. Here is a stack of my home-made 8 and 10 inch mirror blanks. The second from the bottom is the one above. I can use the thinner blank below it as the grinding tool. UPDATE

Telescope Mirrors Blanks Secondaries Grinding Materials:

TELESCOPE MIRRORS BLANKS TOOLS TESTERS GRINDING MATERIALS POLISHING MATERIALS ALUMINISING MIRROR BOX RONCHI LASER FOUCAULT . per kilo 40AUD Tin oxide grinding powder per kilo 30AUD Pumice grinding powder per kilo 30AUD 80 Grade grinding powder per 8 mirror 2AUD 120 2AUD 220 3AUD 320 4AUD 500 6AUD 1000 .

Rough Grinding of a Telescope Mirror Guys Math amp:

Dec 15 2014 The math is important you want your mirror to be a parabola and the equation for the depth or sagitta that you must grind into the glass isnt too difficult. First of all f-ratio means the ratio between the focal length and the diameter of the primary mirror.

To Grind a Telescope Mirror SpringerLink:

To Grind a Telescope Mirror Three evenings Authors Authors and affiliations M. G. J. Minnaert Chapter. 121 Downloads Abstract. This 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 telescope making is surprisingly simple and .

tut44 Making A Mirror Grinding Tool:

Telescope mirrors are relatively thick. The concave shaped face is made by repeatedly rubbing the primary glass blank over another blank called the tool. The tool is equal in diameter to the primary. To grind away the . After fine grinding is complete the mirror must be polished. It is

Newport Glass Works LTD Grinding Polishing and Figuring:

Thin Telescope Mirrors . Abridged from an article appearing in Telescope Making 12 Provided Courtesy of Astronomy Magazine Articles Author Bob Kestner . Part I - Grinding . For many years amateur astronomers and telescope makers thought it essential that glass for telescope primary mirrors be at least one-sixth as thick as its diameter.

Stellafane ATMMirror Making Myths:

Why would grind a mirror when you can buy one just as cheaply When the North American amateur telescope making movement began in the 1920s there were few alternatives - the only commercial telescopes where extremely expensive and often where individually commissioned. Making your own was the only way for most people.

Amateur Telescope Making Main Page Stellafane:

There are a lot of misconceptions about making a mirror - read this even if you dont plan to make a mirror but just want to know how it is done - with your bare hands and a few simple tools you can grind and figure a fine mirror with a surface accurate to a few millionths of an inch Telescope Formulas and Design Comparator

Can You Do It Make your own telescope mirror that is:

I made my first mirror when I was 14 a 6 f9 it was supposed to be an f8 but I had trouble getting the curve deep enough by myself using Thompsons Making Your Own Telescope. It probably came out no better than 12 wave - I dont know - I really didnt know how to test well yet.

Grinding your own mirror How is it possible to get:

Dec 31 2016 Page 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 amp answers on topics such as whether it is possible to use a 3D printer to design and print out a telescope mirror or design an array of paraboloids this way for a segmented design and the answers have been no the 3D printers dont

Grinding own mirror gives you a spherical or a parabolic:

Aug 27 2012 Share. Posted August 24 2012. The natural mirror grinding process will create a sphere. The first part of making a mirror is to grind and polish to a sphere of the required focal length. Then the mirror is parabolised by using special polishing strokes that changes the figure from sphere to

Mirror Grinding Machine:

My Mirror Grinding Machine. For a long time Ive wanted to build a machine for grinding telescope mirrors. Dennis Rechs M-o-M designs finally inspired me to just get up and do it. Over the years Id been collecting motors gear boxes pulleys etc. Most of them came from industrial junk yards.

GRINDING A TELESCOPE REFLECTOR WITH TOOL:

Grinding telescope reflectors of 15-inch diameter and over makes it necessary to employ a motor-driven turntable. Small mirrors are generally ground and polished by rotating the tool fastened to the turntable and working the mirror blank by hand either in straight or in circular strokes over the tool. In this case the overhang of the mirror .

Mirror Grinding Take A Class Or DIY ATM Optics and:

May 11 2017 Read Jean Texereau How to Make a Telescope even if you do find a good mentor to work with. Its a classic very well written and the methods he describes are still spot on in year 2020. I would recommend NOT starting with a thin mirror a really big mirror or a really fast mirror. An 8 inch f6 or even 6 inch f8 is a great starting point.

How I make Telescope Mirror Blanks:

It is a fine-looking near full-thickness 10 inch diameter blank that I intend to grind and polish into a 1st class telescope mirror. Here is a stack of my home-made 8 and 10 inch mirror blanks. The second from the bottom is the one above. I can use the thinner blank below it as the grinding tool. UPDATE

24quot F6 thin telescope mirror grinding 34quot plate ATM:

Nov 06 2013 Page 1 of 2 - 24 F6 thin telescope mirror grinding 34 plate - posted in ATM Optics and DIY Forum A friend and I have decided to grind this as a fun yet challenging project. I have ground and polished several mirrors including a 6 8.5 9.2 and 14.7 quartz mirror. I have decided to take the next step with this ultra-thin setup. I know it is bordering on the edge of extremely thin with a 32 .

Making a homemade mirror grinding machine ATM:

Mar 06 2006 Gordon will know more about the math for different mirrors and different sizes. I recall for mine it was about a 70 tool diameter. The bucket Gordon used to make the tile tool was 8 1516 70 of 12.5 ends up at 8 34 . Looking back at my notes I used the tile tool primarily at the 70 zone of the mirror.

mirror grinding kit grind and polish telescope mirror at:

mirror grinding kit grind and polish telescope mirror at home mirror blank grinding tool grinding powders ceruim oxide optical polish View Basket 0 0.00 ex VAT View Quote 0 Register Login