telescope mirror grinding machines

    Ritchey Mirror Grinding Machine | National Air and Space ,, George Willis Ritchey built this mirror grinding machine at the Yerkes Observatory in Williams Bay, Wisconsin, in the late 1890s Under the sponsorship of George Ellery Hale, the machine was used to grind a series of telescope mirrors starting with a 24-inch and then a 60-inch mirror for a telescope ,Telescope Mirror Grinding Machines, Telescope Mirror Grinding Machines Mc World Grinding Machine for Large Telescope Mirrors Grinding Machine for Large Telescope Mirrors I designed and built a grinding machine for mirrors up to 42 inches [11m] in diameter By slipping on and off a couple of belts, the machine can quickly be reconfigured for spinning work or for stroking work ,Document sans nom, 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 bronzeObsession Telescopes / Optics, A telescope mirror is designed to form a diffraction limited image of a point source Ideally, a certain percentage of the light in the image will fall within the diffraction disk diameter The Strehl ratio compares the mirror's actual performance in terms of its ability to ,Telescope Mirror Blanks / TelescopeMirrorBlanksCom ,, 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.

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    Buy Telescope Mirrors, Jim's Mobile, Inc (JMI Telescopes) is a world renowned manufacturer of astronomical telescopes and aftermarket accessories for the amateur and professional astronomer We manufacture telescopes and accessories such as telescope wheels, carrying cases, guiding computers, focusers, motors and motor controls and much morePanasonic HDC, May 01, 2010· just a quick vid of my home made mirror grinding machineTelescope Making Supplies, 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 Machine, 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 of them came from industrial junk yardsMike's Telescope Workshop, This is my home-built edge grinding machine for grinding down my home-cast mirror blanks Click to see the whole project This is a 125 inch diameter, 15 inch thick, light-weight honeycomb-back telescope mirror blank that I made myself.

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    Stellafane ATM: Grits, Polish & Pitch, Mel Bartels, a well respected west coast amateur, recommends on his Large, Thin Mirror Grinding web page starting with something between 30 and 60 grit, and then 120, 220, 500 (=25 micron) and finishing with 9 micron This is just a 5 grit sequence, as opposed to 8 to 10 for the more traditional sequences usually recommended for novicParabolizing a Telescope Mirror, - 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 ,grinding / polishing machine for telescope mirrors ,, Sep 29, 2014· Mechanical assembly is complete The machine could start grinding now I still need to build the electronics, and then there's painting and finishingTelescope 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 ,Mirror, Mirror-O-Matic grinding machine When I decided in 2009 after a ten-year break to get into mirror making again, it quickly became clear to me that I would need to construct machine, as hand grinding big mirrors is not something very beneficial for the hands of a musician.

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    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 ,Making my own fixed post mirror grinding/polishing machine ,, Oct 15, 2012· 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?What are the best sources for mirror blanks?, Jun 12, 2016· What are the best sources for mirror blanks? - posted in ATM, Optics and DIY Forum: Ever since I found Stellafanes mirror making page, Ive been itching to build my own telescope Im going to start with a 6-8in Newt (the classic beginning ATM project!) All I need now are the materials! I can find the yogurt containers pretty easily For the rest of it, I had to do a little searchingHomemade Telescope Making, (3) A homemade telescope mirror can be made with more accuracy and smoothness than the mass-produced, commercial mirrors available today Unfortunately, the cost of mirror grinding kits and pyrex blanks has increased significantly in recent years to the point where any savings from making a mirror versus buying one are minimal at bestWooden Telescope Part 1: the Mirror : 14 Steps (with ,, CNC machining is already the standard way of grinding and polishing telescope mirrors at an industrial level This method usually produces consistent and good results Some amateurs actually use grinding machines to cut most of the grinding and polishing time Figuring is actually the most sensitive part.

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    Grinding Machine for Large Telescope Mirrors, Grinding Machine for Large Telescope Mirrors I designed and built a grinding machine for mirrors up to 42 inches [11m] in diameter By slipping on and off a couple of belts, the machine can quickly be reconfigured for spinning work or for stroking work The machine can also work smaller mirrors if the drip pan is moved to the fast shaft on ,telescope mirror grinding / polishing machine with ,, Feb 14, 2016· The machine is shown grinding a 300 mm mirrorHow to build a tachometer: florinmyiporg/blog/making-tachometer-grinding-polishing-machine-telescope-m,Mirror, The Machines: Documentation: Information for ATMs Zip archive of Mirror-o-Matic Yahoo Groups (2000-2019) 307 Contact Dennis ,24" F/6 thin telescope mirror grinding 3/4" plate, Nov 06, 2013· Page 1 of 2 - 24 F/6 thin telescope mirror grinding 3/4 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, 85, 92, and 147 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 ,Telescope Mirror Grinding Machine | Products & Suppliers ,, After experimenting with copper and tin alloys for the metal reflecting surface and developing his own steam-driven mirror grinding machine , this telescope was completed in 1839 Optomechanical tests and performance results of the SIRTF cryogenic optical system The flight secondary mirror of the telescope was machined , ground , and polished ,.

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    jeffbaldwinorg, 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 positionStellafane ATM: Rough Grinding, This page describes the rough grinding process Before You Start Use this checklist to make sure you are ready to start rough grinding: You have selected a mirror diameter and focal ratio, and have use these to calculate a target sagitta; You have a way to measure sagitta; You have an appropriate size mirror blank, you have selected a surface to grind, and you have beveled the edgeTelescope Mirror Making: Part 3, Rough Grinding, Sep 23, 2012· After hogging the mirror blank to depth, the rough grinding stage begins In this video I am grinding with 60/90 grit The wets are lasting about 90 second,How to Make Your Own Telescope Mirror, How to Make Your Own Telescope Mirror: [Fig 1] This is a large piece of glass a woman off Craigslist gave me It was 40"x40" and 075" thick Its what I decided to use to make the mirror Cutting it into smaller sections can be difficult but scoring it with a glass cutter and tapping the,Mel Bartels' Amateur Telescope Making, 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.

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