mirror grinding parabolic

  • Grinding own mirror gives you a spherical or a parabolic

    Aug 27 2012 nbsp 0183 32I cant help but come to the conclusion that everyone who grinds their own mirror is actually making a spherical curved mirror rather than a parabolic am I right I cant see how a parabolic curve can be made with the technique everyone appears to use to grind their own mirrors because a parabolic…

  • Grinding Polishing and figuring a 14 f 3 85 Telescope Mirror

    Furthermore I decided that I would like to grind and polish the mirror myself telescope mirror will only focus distant light correctly if it is parabolic in shape …

  • Making a Mirror Bob May 39 s Astronomy Site

    A paste allows for the placing of a little bit on the mirror or lap and then thin it out don 39 t provide for the flexibility that pitch does for making a parabolic surface …

  • Pressureformed Parabolic Mirror From A Mylar Blanket

    Jul 26 2016 nbsp 0183 32Pressureformed Parabolic Mirror From A Mylar Blanket was a full size mirror in glass that was spun while cooling to get near finished shape to cut down on the amount of grinding and the…

  • optics Is it practical to hand grind a convex parabolic

    I know it s practical to hand grind a convex spherical mirror and that it s practical to make a concave parabolic mirror from a spherical one But as I understand it the procedure for doing so depend on tracking progress by using interference patters generated by focusing light off the mirror and that procedure clearly can t be used unmodified with a convex mirror …

  • Mirror The James Webb Space Telescope NASA

    Webb Telescope 39 s scientists and engineers determined that a primary mirror 6 5 SSG Tinsley started by grinding down the surface of each mirror close to its …

  • Grinding Telescope Mirrors Then and Now Blogs Philadelphia

    Jan 27 2012 The article Want To Make A Giant Telescope Mirror John Mudge 39 s apparatus for grinding parabolic mirrors Source John Mudge …

  • MIRROR MAKING HOW TO MAKE YOUR OWN TELESCOPE MIRROR BY

    A To make a telescope mirror from a flat disk of glass the flat surface has to be changed to a spherical parabolic surface because a flat surface can only reflect light in the same opposing angle as it comes to the surface but for a enlarged view to be seen the light has to come to a small focal point at our eye or camera lens therefore the surface is changed by grinding and…

  • Mirror grinding scope making

    You might purchase a mirror grinding kit and have everything you need included If such a kit is unavailable you need to do some scrounging You can order a 19 mm thick disc at your local glass shop Such glass is usually used for tabletops and window displays …

  • Figuring the Perfect Mirror al coat

    The mirror is now on the bottom don t forget to rotate the mirror Since the original version of this program we have learned a bit more about polishing lap on top It seems that lap on top polishing with short strokes actually shortens the mirror radius Grinding tool on top lengthens mirror…

  • Joy of Mirror Making Rough Grinding

    Rough grinding a telescope mirror The fix is to change the mirror 39 s curve from spherical to parabolic The parabola is defined as the curve that results from the …

  • MIRROR MAKING

    Jan 21 2016 for the mirror and ¼ thick glass grinding tool B Cut mirror piece While the parabola whole mirror only Nulls at Focal Length The Parabola …

  • Wooden Telescope Part 1 the Mirror 14 Steps with Pictures

    A Foucault Tester is an instrument designed to analyze the surface of parabolic mirrors It has a light source that shines on the mirror When the light comes back it focuses in a different area depending if it came from the edge or the center of the mirror The grinding of the mirror was done at home It took more than a month to finish…

  • Stellafane ATM Mirror Making Myths

    For many years the Springfield Telescope Makers have held mirror making We then polish this sphere smooth and then slightly alter it into a parabolic curve …

  • Parabolic Mirror – Thomas Jacquin Creations

    Once the mirror has been parabolised using the Foucault knife edge test it is Project Parabolic Mirror Technology Glass grinding and polishing Material …

  • A Grinding Apparatus For Making A Middle Size Parabolic Mirror

    A large solar furnace that has a parabolic mirror with a diameter of 10m a focal length of 3 2m and a heliostat mirror with an area of 15x15m was made by the …

  • telescope mirror grinding polishing machine with

    Feb 15 2016 nbsp 0183 32The machine is shown grinding a 300 mm mirror How to build a tachometer How To Make Parabolic Mirrors From Space Blankets NightHawkInLight Duration 6 59 …

  • Mirror grinding machine Hackaday

    Sep 26 2006 Grinding and polishing your own mirrors is a long arduous process a parabola lambda 20 is considered very good lambda 4 is passable …

  • Telescope Mirrors Orion Optics

    Each optical surface is tested up to 29 times as it passes through its many processes of being turned from a blank piece of glass to a highly accurate figured mirror or lens Below is our selection of Telescope Mirrors available to purchase and a…

  • Telescope Mirror Blanks TelescopeMirrorBlanks Com Grind Your

    Com provides telescope mirror blanks and thin plate glass mirror blanks for plate glass blanks take on and maintain every bit as accurate a parabola as Pyrex …

  • tut44 Making A Mirror Grinding Tool Asterism

    mirrors have either a spherical or a parabolic shaped concave face Unlike most other mirrors in your home the mirror coating of a Newtonian mirror is actually applied to the front face of the glass not the back The light collected by the Newtonian primary mirror does not pass through any glass until it reaches the eyepiece It simply…

  • Amazon 160mm Telescope Spherical Mirror 1300mm

    160mm Telescope Spherical Mirror 1300mm Focal Length So it seems ok for a cheap mirror A parabolic mirror will cost you almost twice as much Read more One person found this helpful Helpful Comment Report abuse Daniel 5 0 out of 5 stars Bought this mirror to replace the one in my bath 10 10 very reflective …

  • Mirror blank kit ATM Optics and DIY Forum Cloudy Nights

    Jun 23 2014 nbsp 0183 32Mirror blank kit posted in ATM Optics and DIY Forum Could somebody please point me to a source where I can purchase a kit for grinding a 6 quot mirror for a Newtonian type telescope Thank you …

  • Parabolic Mirror Grinding Machines Products amp Suppliers

    Find Parabolic Mirror Grinding Machines related suppliers manufacturers products and specifiions on GlobalSpec a trusted source of Parabolic Mirror Grinding Machines…

  • Mirror o matic

    May 2 2002 Tools of less than 50 diameter may cause problems while grinding although they are valuable when figuring a parabola with a pitch lap …

  • Precision Machining of Parabolic Mirror Made of Low Thermal

    In order to develop the mirror made of a new low thermal expansion ceramic parabolic mirror of the ceramic is ground and polished to test By the grinding and …

  • tut44 Making A Mirror Grinding Tool Amateur Astronomers Inc

    Today with the low cost imported telescopes making your own telescope mirrors have either a spherical or a parabolic shaped concave face Unlike most …

  • Buy mirror blanks for telescope making

    12 Inch Mirror Blanks 3 4 quot Thick 69 S ampH 16 Shipping prices are to the USA not shipping outside the US sorry Combined shipping is possible Write For a complete mirror making KIT with all abrasives polishing compounds pitch and grinding tool included please see our Buy Telescope Mirror Kits…

  • Telescope Mirror Kits Firsthand Discovery

    Want to build your own telescope Start with one of our 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 specifiions …

  • How to make your own telescope mirror All Instructables

    After your finished with fine grinding the mirror you will need to make yet another tool This is symmetrical however it is a far cry from a near perfect parabola …

  • 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 MoM designs finally inspired me to just get up and do it Over the years I d been collecting motors gear boxes pulleys etc …

  • Grinding my first 6 quot f 8 Telescope Mirror YouTube

    Oct 27 2011 This video shows a few initial stages of making a primary mirror for a 6 quot not sure if a spherical mirror is good at f7 its cheaper then parabolic …

  • Amateur telescope making Wikipedia

    Grinding a mirror using an abrasive and a smaller tool over 300 mm mirror quotATM 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 fabriion of the primary mirror …

  • Newport Glass Works LTD Grinding Polishing and Figuring

    I recommend 60 carborundum for rough grinding By the way as in all optical work be sure that you always maintain bevel on the edge of the mirror throughout grinding If your mirror is light enough to grind on top grind much the same way you would a smaller mirror …

  • Spin casting mirrors Wikipedia

    Spin casting is a technique for constructing large parabolic mirrors by using the curved surface formed by a rotating liquid e g in a rotating furnace It is distinct from the spin casting or centrifugal rubber mold casting CRMC technique used for casting metal or plastics …

  • Grinding a 25Inch F3 Telescope Mirror Thinning and

    Dec 16 2014 nbsp 0183 32Gordon started with a 2 quot thick telescope mirror that weighed about 70 pounds By thinning the blank he s lightened the mirror by about 20 pounds This video explains how he ground off the excess…

  • How the Enormous Mirrors on the World 39 s Largest Telescope Are

    Sep 3 2014 How long does it take to fully grind and polish a mirror segment entire 25 m telescope is a symmetric parabolic mirror but the segments …

  • Mirror grinding Scopemaking

    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 quot pride of …

  • Telescope Mirror Making Part 3 Rough Grinding YouTube

    Sep 23 2012 nbsp 0183 32After hogging the mirror blank to depth the rough grinding stage begins In this video I am grinding with 60 90 grit Telescope Mirror Making Part 3 Rough Grinding How To Make Parabolic…

  • Diy mirror grinding aspherical telescopes

    You can definitely grind a parabolic mirror by hand I have seen many videos of people doing it You start by grinding a spherical mirror Use a pottery wheel type setup to help this process go faster Once you have a decently shaped and polished spherical mirror you can start the quotfiguring quot process to make it parabolic …

  • Making a 12 inch Mirror DIY Astronomer Stargazers Lounge

    Sep 10 2010 I would like to use this thread to describe the making of a 12 inch F5 curve on the mirror the parabolic surface is 39 added 39 after the mirror is …

  • The ATM 39 s Workshop 14 quot Mirror Making Log

    This is a log of one of my ATM mirror making projects My target parabola should have an edge that focuses about 5mm longer than the center This is quite a …

  • Joy of Mirror Making Rough Grinding BBAstroDesigns

    The center will deepen during the first stage of fine grinding as contact is achieved across the mirror face and fine grinding tool On larger mirrors the ring tool may leave the zones part way to the edge a little underground For these mirrors as you near the depth you can alter the strokes to be offcenter …

  • Telescope Mirrors amp Prisms for sale eBay

    A refurbished telescope mirror is more affordable while still assuring you of a highquality optical surface Another choice for an affordable telescope mirror is to buy an open box item These mirrors are unused though the packaging is opened Used mirrors can be a bargain but you need to make sure the optical surface is pristine …

  • Telescope – Beginners Guide Reflector Sideways Orion

    Feb 12 2010 Reflecting Telescopes Reflectors use a big mirror to collect the light To create a spherical or parabolic mirror you can grind the glass by …

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