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telescope mirror grinding machine

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  • Newport Glass Works LTD

    2014 7 21 Thin Telescope Mirrors Abridged from an article appearing in Telescope Making #12 Provided Courtesy of Astronomy Magazine Article s Author Bob Kestner Part IGrinding 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.

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  • Astronomy Options

    2021 5 25 Currently manufacturing a 16″ diameter 1″ thick plate glass f3.88 Newtonian telescope mirror Doing this with my new fixed post grinding machine built this summer Work is progressing well and very efficient Started project in August 2013 and at this point I am ready to move on from 25 micron White Aluminum Oxide to 9 micon White Aluminum

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  • Mirror Grinding Machine

    2015 8 14 Very last knife edge readings for this mirror I think Here is the project file source code It was created using Microsofts VC ver 6 If you don t have at least that this file probably won t be very useful ParabProj.zipAbout 170 kb Tom Stokes 12/25/12

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  • Telescope Mirrors Blanks Secondaries Grinding Materials

    2015 12 17 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

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  • Telescope mirror grinding on Vimeo

    2019 9 2 Telescope mirror grinding Fine grinding the Dream Cellular 62 cm f/3.4 Cassegrain primary spindle grinder The grinding tool is glass tiles cast in dental stone The grit at this stage is 25 micron aluminum oxide.

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  • Astro Tel

    2001 4 12 MIRROR GRINDING MACHINE I made my first mirror grinding and polishing machine over thirty years ago It used the working principle of the machine illustrated at A Fig.3 Page 163 Amateur Telescope Making Book 1 A bowl which rotated was fitted

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  • How I make telescope mirror blanks by fusing glass sheets

    2016 2 26 This page describes how I make thick glass telescope mirror blanks by fusing together sheets of thinner glass I have found fusing the glass sheets to be easier and less problematic than casting the blanks as I do with my light weight honeycomb blanks or my earlier attempts at casting solid blanks.The main problems with casting are that much higher temperatures are required and lots of air

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  • Building a fixed post mirror grinding machine

    2019 10 13 Re Building a fixed post mirror grinding machine Update summary Lots of work to get to this point Things I need to probably change or fix My gearing of the DC motor I will need a slow speed for polishing 5 rpm and faster speeds for hogging out and fine grinding 15 30 rpm so likely need to think about adding a gear reduction.

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  • Types of mirror grinding machines

    2018 11 16 Types of mirror grinding machinesposted in ATM Optics and DIY Forum Hi to all I am planning to make a mirror grinding and polishing machine but i have limited knowledge about these machines Because of this i have some questions to someone who has some experience with those machinesSome machines have fixed supportes and some of them have a prestaltic moving arm

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  • Strasbaugh polishing and grinding machine

    Strasbaugh polishing and grinding machine You wont find very many of these around Strasbaugh is the premier manufacture of machines used by the professionals This machine is solid no plastic or wood You can adjust the spindle and eccentric speed with a turn of a knob while running It makes mirror grinding a pure joy.

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  • Waite Research Telescope Mirrors Home

    2010 4 29 Fine Grinding a 20 Quartz Telescope Mirror Rough Grinding on the Fixed Post Mirror Grinding Machine Hogging the Curve on a 20 f/4.5 Quartz Telescope Mirror Astronomy magazine names Waite Research s Renegade telescope a top astro product of 2015 The 20 Renegade telescope offers fabulous viewing without climbing a ladder.

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  • Stellafane ATM Materials Tools

    This is the focus of all your workyou will turn this flat piece of glass into an accurate parabolic telescope mirror We recommend a full thickness Pyrex blank for mirrors up to to 12 in size Full thickness means the diameter to thickness ratio is 6 1 i.e an 8 full thickness mirror is 1.3 thick .

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  • Telescope Mirror Kits

    Each kit comes with a telescope mirror blank and all the abrasives silicon carbide grits and white aluminum oxide powders cerium oxide polish and pitch to grind and polish it to your specifications Please note that our kits do not include a grinding tool or pitch lap If you need materials for making a grinding tool or pitch lap we have

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  • Mike s Telescope Workshop

    2021 7 28 I finally decided it was time to build a machine to help me grind the edges of the blanks true and round 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 12.5 inch diameter 1.5 inch thick light weight honeycomb back telescope mirror blank that I made myself.

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  • Mirror Grinding Machine Leonardo Da Vinci s Inventions

    The mirror or lens grinding machine is a masterpiece of mechanical engineering It has several gears in mesh at all times and also has several variable settings built into it This machine was most likely designed by Leonardo while he was either investigating the different ways that light reflected off things or maybe he was planning on

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  • Mirror Grinding Machine

    2015 8 14 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.

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  • How I make Telescope Mirror Blanks

    2012 3 19 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

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  • mirror grinding machine 24 or larger

    mirror grinding machine 24 or larger Please Log In to view the details for this classified ad Don t have an Astromart account Click here to create one seen three machines for sale several months ago located in ohio if anyone has one or knows about the three that were for sale i would appreciate any info thanks wade likes.

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  • Mirror Grinding Machine

    2021 10 14 orbital mirror polishing machine LPC 160 MIRROR is suitable also for grinding and surface preparation prior to mirror polishing Machine is delivered complete with Inverter device for an optimal mirror finishing Browse Grinders and Grinding Machines Datasheets for J S Machine Inc.

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  • Stellafane ATM Mirror Making Myths

    Making a Mirror takes Hundreds of Hours of Work Not True A 6 or 8 mirror should take about 40 to 80 hours of effort While this is a non trivial amount of time the mirror can be completed in a few months and certainly within a year Most people work one to three hours a day on their mirror

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  • Telescope Mirrors Astronomical Mirrors Reflector

    2021 9 17 Parabolic Astronomical Telescope Mirrors 1/12 Wave are polished and figured to yield high level performance Each mirror is aluminized and hard overcoated with a protective overcoat ready for placement in the telescope tube All mirror surfaces are free of any defects which affect performances Special types of equipment and techniques make

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  • To Grind a Telescope Mirror

    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 accessible Further technical details may be found in many books on amateur telescope

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  • Ritchey Mirror Grinding Machine

    2021 1 11 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 initially intended for the Yerkes Observatory.

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  • ELID grinding of SiC ultra lightweight mirror

    Silicon carbide SiC is the most advantageous as the material of various telescope mirrors because SiC has high stiffness high thermal conductivity low thermal expansion and low density and so on 1 2 However since SiC is very hard it is difficult to obtain the surfaces efficiently by using ordinary grinding method Therefore we developed the ultra lightweight mirror by ELID

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  • M o M Free Preview

    2015 4 5 Mirror o Matic was designed to be a very low cost astronomical mirror grinding polishing and figuring machine Its attributes are 1 It can be built for somewhere between 200 and 400 2 It is constructed of hardware store items and it needs no machined parts 3 It is constructed primarily of 3/4 inch plywood and has few close tolerances 4.

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  • How I make Telescope Mirror Blanks

    2012 3 19 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

    Get Price
  • Slotted Block for the Mirror o Matic telescope mirror

    This is a slotted block for the Mirror o Matic telescope mirror grinding and polishing machine.by Dennis Rech You can look at mirror o matic for the information plans and operations manual All size parameters can be adjusted as well as the diameter of the target mirror The optional slots for washing out the grid from inside the block slit are also provided.

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  • Mel Bartels Amateur Telescope Making

    2021 9 25 The I.A.U named asteroid 17823 Bartels discovered 1998 by J.M.Roe 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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  • ELID grinding of SiC ultra lightweight mirror

    Silicon carbide SiC is the most advantageous as the material of various telescope mirrors because SiC has high stiffness high thermal conductivity low thermal expansion and low density and so on However since SiC is very hard it is difficult to obtain the surfaces efficiently by using ordinary grinding method Therefore we developed the ultra lightweight mirror by ELID ELectrolytic

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  • Waite Research 15 F4.5 Telescope Mirror

    The fabrication of this 15 F4.5 primary telescope mirror began with a planoplano blank I used my own diamond grinding equipment to generate the rough curve here After the generation I poured a steel grinding tool and used #40 silicon carbide abrasive to get the mirror close to the target focal length.

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  • Parabolizing a Telescope Mirror

    2021 7 20 Zambuto s process using a Mirror O Matic machine comes close to generating a properly parabolized mirror simply by following the steps outlined in his spreadsheet Texereau states that his group has parabolized a number of mirrors automatically in effect by using a team of four or five operators all applying the same stroke

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  • jeffbaldwin

    2015 9 7 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.

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  • Stellafane ATM Mirror Making Myths

    Making a Mirror takes Hundreds of Hours of Work Not True A 6 or 8 mirror should take about 40 to 80 hours of effort While this is a non trivial amount of time the mirror can be completed in a few months and certainly within a year Most people work one to three hours a day on their mirror

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