telescope grinding machine

Stellafane ATM Mirror Making Myths
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You may notice that many commercial telescope advertisements proclaim they use Hand Figured Optics - in fact this is one of the best and least expensive ways to get an accurate surface on a mirror - most machines just can t hold the tolerances necessary and any good telescope optic including the mirror...

Telescope Mirror Blanks / TelescopeMirrorBlanksCom
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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...

How I built an edge grinder for telescope mirror blanks
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I eventually decided I needed to build a dedicated edge grinding machine This is how I did it I started the build by making a sturdy frame for the unit out of 2x4 lumber and 3/4 inch thick plywood Wheels were added to the bottom of the unit so it can be wheeled outside The grinding operation will be messy so it will need to be done outside...

GRINDING A TELESCOPE REFLECTOR WITH TOOL
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GRINDING A TELESCOPE REFLECTOR WITH TOOL-GRINDING DEVICE By George F Tauchmann 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...

Mel Bartels Amateur Telescope Making
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The IAU named asteroid 17823 Bartels discovered 1998 by JMRoe in recognition for my contributions to amateur astronomy Making is the Key to Knowing A telescope mirror is arguably the most accurate surface made by human or machine Amazingly you can grind a mirror by hand and make a telescope with simple hand tools...

Mel Bartels Amateur Telescope Making
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The IAU named asteroid 17823 Bartels discovered 1998 by JMRoe in recognition for my contributions to amateur astronomy Making is the Key to Knowing A telescope mirror is arguably the most accurate surface made by human or machine Amazingly you can grind a mirror by hand and make a telescope...

Stellafane ATM Materials Tools
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The Tools Grinding Polishing You will need two tools A hard tool for rough and fine grinding and a soft tool or pitch lap for polishing and figuring Traditionally the pitch lap was made on top of the grinding...

How I Make Light
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Rough grinding is complete for the 125 inch honeycomb-back telescope mirror blank The rough grinding went pretty quickly and painlessly this time I only have maybe 12 hours of actual work in the mirror so far It s hard to believe but the rough grinding has removed over a pound of glass The mirror now weighs in at only only 8 pounds 15 ounc...

Grinding a 25
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Dec 16 2014 0183 32 Gordon started with a 2 thick telescope mirror that weighed about 70 pounds By thinning the blank he s lightened the mirror by about 20 pounds This v...

Document sans nom
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As often in sciences and technology Leonardo da Vinci was a pioneer creating machines for the production of optical devic Indeed between 1513 and 1517 he imagined machines to grind and polish telescope mirrors which at the time were made of bronze...

Homemade Telescope Making
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This web page provides an overview of my large homemade telescope making project I read several telescope and mirror making books and visited many amateur telescope making or ATM websites to learn how to build a 145 inch homemade telescope of this size Grinding...

jeffbaldwinorg
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Fixed-post machine grinding is where the mirror is on a turntable rotating around 20 PRM speeds vary and a 75 tool is on top They are already curve-generated The tool is hanging over the mirror by 1/6 the diameter of the tool or about 1/8 diameter of the mirror and is fixed in this position...

Making my own fixed post mirror grinding/polishing machine
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Oct 15 2012 0183 32 Page 1 of 2 - Making my own fixed post mirror grinding/polishing machine - posted in ATM Optics and DIY Forum Hey guys Im thinking of making my own fixed post mirror grinding/polishing and curve generating machine Ive got loads of questions regarding the design so Ill just start firing away Do I need an eccentric moving tool to be able to polish a mirror spherical...

Mirror Grinding Machine Hackaday
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Sep 26 2006 0183 32 The true test of the amateur astronomer is building their own telescope Grinding and polishing your own mirrors is a long arduous process Instead...

Newport Glass Works LTD Grinding Polishing and Figuring
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Thin Telescope Mirrors Abridged from an article appearing in Telescope Making 12 Provided Courtesy of Astronomy Magazine There are several ways to support the grinding and polishing machine turntable but first make sure the turntable itself is rig It must not bend If your machine lacks a sturdy turntable one way to...

Mirror grinding
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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...

Stellafane ATM Measuring Sagitta
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Stellafane Home of the Springfield Telescope Makers Inc Springfield Vermont USA Amatuer Telescope Making Measuring Sagitta Depth of Curve During grinding the mirror is too rough to measure the focal length optically to any reasonable precision...

Grind and Polish a Dobsonian/Newtonian Telescope Mirror
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Grind and Polish a Dobsonian/Newtonian Telescope Mirror With Hand Tools Making a telescope about 10 years ago was one of the most rewarding projects I ve ever undertaken I ground the mirror and made every other component out of recycled materials as much as possible This Instructable will cover how to grind a mirror f...

Leviathan of Parsonstown
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Design and construction Parsons improved the techniques of casting grinding and polishing large telescope mirrors from speculum metal and constructed steam-powered grinding machines for parabolic mirrorsHis 3 feet 91 cm mirror of 1839 was cast in smaller pieces fitted together before grinding...

Stellafane ATM Mirror Making Myths
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You may notice that many commercial telescope advertisements proclaim they use Hand Figured Optics - in fact this is one of the best and least expensive ways to get an accurate surface on a mirror - most machines just can t hold the tolerances necessary and any good telescope optic including the mirror you could make in your kitchen should...

Roger s Refractor Building Page
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I will assume that you have made mirrors before and thus won t describe the basic processes of grinding and polishing glass or testing an optical figure by means of a knife edge or Ronchi tester Many books exist which detail these processes my personal favorite is Jean Texereau s How to Make a Telescope...

Stellafane ATM Measuring Sagitta
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Stellafane Home of the Springfield Telescope Makers Inc Springfield Vermont USA Amatuer Telescope Making Measuring Sagitta Depth of Curve During grinding the mirror is too rough to...

Mirror Grinding Machine
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My Mirror Grinding Machine For a long time I ve wanted to build a machine for grinding telescope mirrors Dennis Rech s M-o-M designs finally inspired me to just get up and do it Over the years I d been collecting motors gear boxes pulleys etc Most...

Telescope Making Supplies
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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...

Mirror grinding
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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 mirrorIt 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...

Amateur Telescope Making Main Page
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Hundreds of links to all aspects of telescope making on the internet ATM Material Suppliers US suppliers of Mirror Blanks Grinding Polishing Supplies and Telescope Making Suppli Astronomy Clubs Many can offer help with your project Astronomy Conventions Star Parties...

grinding / polishing machine for telescope mirrors
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Sep 29 2014 0183 32 Mechanical assembly is complete The machine could start grinding now I still need to build the electronics and then there s painting and finishing...

jeffbaldwinorg
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Fixed-post machine grinding is where the mirror is on a turntable rotating around 20 PRM speeds vary and a 75 tool is on top They are already curve-generated The tool is hanging over the mirror by 1/6...

How I built an edge grinder for telescope mirror blanks
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I eventually decided I needed to build a dedicated edge grinding machine This is how I did it I started the build by making a sturdy frame for the unit out of 2x4 lumber and 3/4 inch thick plywood Wheels were added to the bottom of the unit so it can be wheeled outside The grinding...

Parabolizing a Telescope Mirror
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- Myron Emerson s Amateur Telescope Mirror Making - GAP 47 s machines summary - David Harbour s Understanding Foucault - Albert Highne s Portable Newtonian Telescopes - Neale E Howard s Standard Handbook for Telescope Making - Albert G Ingall s Amateur Telescope Making Volumes 1-3 - H Dennis Taylor s The Adjustment and Testing of Telescope...

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