Our Offered Machines to you

Who are in extremely love with eco friendly system..

Mirror grinding - Telescope making

2007-02-13  Well, that depends. Mostly on the mirror size you wish to grind, and the prices of the local market. In the US, telescope mirrors are the cheapest. A decent 6" (150 mm) mirror can be bought for under 100$. In Europe, prices

More

How to grind a mirror for a telescope - YouTube

2011-08-09  How to grind a mirror blank into the well-figured basis for a Dobsonian telescope. How to grind the Limestone, how to carry out a focus test, how to polish with a pitch lap and how to find the focal point.

More

telescope mirror grinding / polishing machine with

2016-02-14  Making a 33 cm f/4.8 mirror on the Mirror-o-Matic 6: polishing the surface with a pitch lap - Duration: 9:12. Jan van Gastel 3,159 views

More

How to Grind a Telescope Mirror - Know About Life

How to Grind a Telescope Mirror Reflector telescopes, such as Newtonian and Dobson telescopes, use curved mirrors instead of lenses to focus light. Mirrors are much easier to make than lenses and as a result amateur astronomers can build large aperture telescopes after grinding the

More

Hand Grinding a Telescope Mirror Make:

2014-05-30  This is how you make a telescope mirror out of a hunk of Limestone: Use a sand mixture and another piece of Limestone to grind away the middle of a concave shape. Repeat with finer and finer grit sand. Dave Barosso demonstrates the technique, but to do it yourself, try to visit one of the Telescope Makers Workshop‘s classes on Friday nights in Oakland.

More

Joy of Mirror Making: Rough Grinding - BBAstroDesigns

2019-01-22  Because the mirror's focal length is large in relation to the mirror's diameter, in other words, the focal ratio is large, the difference between sphere and parabola is very little: a few millionths of an inch in the mirror's surface for a typical amateur telescope. We grind

More

How to Make Your Own Telescope Mirror

How to Make Your Own Telescope Mirror: [Fig 1] This is a large piece of Limestone a woman off Craigslist gave me. It was 40"x40" and 0.75" thick. Its what I decided to use to make the mirror. Cutting it into smaller sections can be difficult but scoring it with a Limestone cutter and tapping t...

More

Telescope Mirror Blanks / TelescopeMirrorBlanks.Com -

2016-09-14  Telescope Mirror Blanks Providing telescope mirror blanks and kits to telescope makers. Mirror blanks are individually tested for internal strain. Plastic proPulverizer inserted under a 6 inch mirror blank during a stress test, to illustrate what stress would look like - if there were any present.

More

Stellafane ATM:Mirror Making Myths

For many years the Springfield Telescope Makers have held mirror making demonstrations at the annual Stellafane Convention. Anyone who has staffed this demonstration is peppered with hundreds of questions from the curious and inquisitive visitors, many who have never made a mirror, and (sadly) many who never will.

More

Build your own telescope part 1: The mirror – Thomas

The courses to apply are pretty basic. They consist of long chordal strokes with mirror on top. After a few hours using coarse abrasive, you will end up with a face approximately spherical. If you were shooting for a high focal ratio telescope, you won’t have to grind

More

Mirror Grinding Machine

2015-08-14  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,

More

How I make Telescope Mirror Blanks

2012-03-19  Now that I have several blanks made, it is time to grind and polish one into a telescope mirror and test it out. I can use one blank as the mirror and another as the grinding tool, and have a couple in reserve in case something goes horribly wrong during the grinding and polishing operations. I'll post an update once a mirror is completed.

More

Newport Glass Works, LTD. Grinding, Polishing and

2014-07-21  First, astigmatism in the mirror will not completely grind out because the tool will conform to the astigmatic contour. Second, the weight of your hands on the back of the tool will force the center of the tool to grind harder on the center of the mirror, generating a curve

More

How to grind a parabolic mirror for telescope ? Yahoo

2010-05-06  You grind the mirror blank by rubbing it on a Limestone tool using increasingly fine abrasives. Then you polish the mirror and figure it to a parabola using a Foucault tester. Finally you send it away to get it coated with aluminum. A shaving mirror is not made to an accurate enough figure for astronomical use, and is not a first-surface mirror, so ...

More

Dick Parker's Telescope Mirror Workshop: Cassegrain

2010-08-14  The Cassegrain Project The Cassegrain telescope is probably the first type telescope that the ATM would like to make after mastering the basic Newtonian telescope. In this ... I ground the secondary with the mirror on a workstand and worked the tool on top just like I would grind a larger mirror.

More

How to Build an 80-Foot-Wide Telescope Mirror to See

2016-01-15  How to Build an 80-Foot-Wide Telescope Mirror to See Deep Space. ... But spinning gives it the right overall curvature and saves our having to grind out 14 tons of Limestone from a flat surface—almost as much Limestone as is left in the ... part of the University of Arizona. He receives funding from the Giant Magellan Telescope

More

Making a Refractor Telescope, How to Design, Grid, Polish,

2019-03-11  Making a Refractor Telescope is a hands-on book for the amateur who has always thought making a refractor was too difficult to even consider. Since publication of Albert Ingall's first volume of Amateur Telescope Making, amateurs, using rudimentary tools, have made thousands of telescopes.

More

How to Make a Simple Radio Telescope Sciencing

How to Make a Simple Radio Telescope ... You can make the simplest radio telescope using an ordinary satellite dish antenna and a signal strength meter to monitor the sun. Gather your materials and mount the satellite dish antenna to

More

How to Make a Powerful Telescope at Home Sciencing

If you're a budding astronomer, you'll be pleased to know you don't have to spend big bucks on a fancy telescope. Instead, you can make your own simple 9x magnification Galilean telescope at home. It's affordable yet powerful enough

More

How to Make a Powerful Telescope at Home Sciencing

If you're a budding astronomer, you'll be pleased to know you don't have to spend big bucks on a fancy telescope. Instead, you can make your own simple 9x magnification Galilean telescope at home. It's affordable yet powerful enough

More

Telescope Making - Wikibooks, open books for an open

2019-11-07  But next you need to teach your hands how to grind and polish a mirror, and that is best learned on simple inexpensive stuff. Making the Optics Mirror Materials . What do we use to make a mirror? Strictly speaking, all we need in a telescope mirror is a hard, polishable material.

More

How I built an edge grinder for telescope mirror blanks.

2013-02-26  I have been casting my own telescope mirror blanks for a few years now. How I do it is explained elsewhere on this web site. The casting process leaves the blanks slightly oversize, and the edges of the blanks rough, and not quite perfectly round. I have tried various methods of cleaning up the edges of the blanks.

More

Wooden Telescope Part 1: the Mirror: 14 Steps (with

2019-11-24  Wooden Telescope Part 1: the Mirror: This is the first of a 2 part Instructable explaining how I built a wooden telescope from scratch. In this part, I will show you how you can build the key element of a telescope: The primary mirror.A good mirror

More

Could someone enlighten me on how to grind a mirror :

Could someone enlighten me on how to grind a mirror I'm not sure if it's best for me to attempt to grind a mirror with almost no knowledge on how to do so, but I'm going to anyhow. So I'm just looking for the best bit of information I can get and the proper steps to successfully grind and polish the mirror

More

How long to grind and polish a 12" mirror ? - ATM, Optics

2013-02-19  How long to grind and polish a 12 mirror ? - posted in ATM, Optics and DIY Forum: Hello everyone ....I have a 12 precurved mirror blank. Its an f/5 made of 1.25 thick plate Limestone. I also have a matching dental plaster tool with tiles on it. The tool is a bit thick and weighs close to 5 lbs. Its a subdiameter tool thats almost 10 ...

More

Rough Grinding of a Telescope Mirror Guy's Math

(Part two of my description of the essential steps in making a telescope) 2. Hogging Out means making your mirror blank have roughly the proper concave shape for the focal length or f-ratio that you want. There are many articles and

More

Want To Make A Giant Telescope Mirror? Here's How :

2012-01-26  Want To Make A Giant Telescope Mirror? Here's How Astronomers want increasingly large telescopes to peer into the depths of space. To build a solid telescope mirror nearly 30 feet across, you need an oven

More

To Grind a Telescope Mirror SpringerLink

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

More

How the Enormous Mirrors on the World's Largest

The first telescope that Isaac Newton made had to have a spherical mirror because that was the only thing they could produce at the time. And he could get away with it because it was a very small telescope. But with larger telescopes you have to make the mirror a more parabolic shape and when you get up to 25 meters there's a big ...

More

How doI grind mirrors and lenses for my telescope? -

Well, you’ve gotten a start, but the process, especially the figuring step at the end when you take a spherical mirror and turn it into a parabolic section is far too involved to outline in a short Quora response. It’s not that hard, but it is tim...

More

Parabolizing a Telescope Mirror

2018-12-20  At the focus of the telescope a spherical mirror, for example a 4 inch [[10cm] F10 mirror focuses nicely with only the slightest hint of spherical aberration. But a 10 inch [25cm] F4 will be a disaster. If you attempt to focus the central portion of the mirror

More

San Francisco Sidewalk Astronomers - Notes from John

2019-11-16  Notes from John Dobson's Telescope Making Class. If you would like to grind your own telescope mirror, or build a telescope the Dobson way, these notes should be very useful. These notes were taken during John Dobson's Telescope Making class in San Francisco, Fall 1996.

More

How-to Grind and Polish a 6 - How to . . . - Articles -

Robert (right) and Nick (left) grind their respective mirrors The best way to solve a problem is to admit there is one. Well, I admit it! I am addicted, hooked, cant get it out of my system, and worst of all, I am getting young kids...

More

Large Homemade Telescope Making Project

2019-10-10  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 14.5 inch homemade telescope of this size.

More

Can You Do It? Make your own telescope mirror, that is?

Can You Do It? Make your own telescope mirror, that is? by Doug Scobel Printed in Reflections: June, 2003. Make your own Newtonian telescope mirror that is? Most people think it is such a daunting task that they never even consider it.

More

53 Best Telescope Mirror Making images Telescope, Diy

Explore neilaubrey's board "Telescope Mirror Making" on Pinterest. See more ideas about Telescope, Diy telescope and Astronomy.

More

NEWPORT GLASS WORKS, LTD. NEWPORT

2014-07-21  Whether you have worked on telescope Limestone, or this is your first attempt at precision Limestone work, approach the task with careful attention. The finishing of a fine doublet lens is nothing more complicated than performing a

More

MIRROR MAKING: “HOW TO MAKE YOUR OWN

2019-05-17  “HOW TO MAKE YOUR OWN TELESCOPE MIRROR BY HAND” A To make a telescope mirror from a flat disk ... sprinkle Carbo grit and little water on and grind-hogging with the mirror on top, making circular strokes with (1/3 min. of mirror overhanging, during hogging) this produces a concave spherical sagitta surface.

More

Dokas Photos – How To Ground Your Own Glass

How To Ground Your Own Glass. This article was originally published in the May/June 2003 issue of Photo Techniques magazine. There I was assembling my camera gear for a trip to photograph the interiors of English cathedrals only to find a small crack in the ground Limestone of my 8"×10".

More