Grinding Machine for Large Telescope Mirrors

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 to the spindle. I also built another machine of the same type.

Mike's Telescope Workshop

telescope mirror grinding machine for sale. 2019-1-22rough grinding a telescope mirrorhe joy of mirror making mel bartels rough grinding also theres the difficulty of creating a spherical curve in the mirror facehe grinding wheel on a boom approach is difficult because it is hard to anchor the mirror and the booms pivot so that they do not move in relation to each otherlass tools About our ...

home made grinding machine homemade telescope mirror ...

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.

This alligator device is ideal for placing the driving contact as close as possible to the mirror surface, which limits the risks of a rocking effect. Yet it requires a regular shape of the mirror side (circular and vertical). The alligator is mostly used on Hindle-type machines but it may be adapted to other types of machines (see photo below).

Telescope Mirror Blanks / TelescopeMirrorBlanks.Com ...

telescope mirror grinding machine for sale. 2019-1-22rough grinding a telescope mirrorhe joy of mirror making mel bartels rough grinding also theres the difficulty of creating a spherical curve in the mirror facehe grinding wheel on a boom approach is difficult because it is hard to anchor the mirror and the booms pivot so that they do not move in relation to each otherlass tools About our ...

Leviathan of Parsonstown - Wikipedia

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.

Mirror-o-Matic mirror making machine - ATM pages of ...

Grinding Machine for Large Telescope Mirrors. I designed and built a grinding machine for mirrors up to 42 inches [1.1m] 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 ...

Diy mirror grinding aspherical : telescopes

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 …

Document sans nom - Astrosurf

Sep 26, 2006· The true test of the amateur astronomer is building their own telescope. Grinding and polishing your own mirrors is a long, arduous process. Instead of …

telescope mirror grinding machine for sale

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.

Mirror Grinding Machine | Hackaday

Sep 26, 2006· The true test of the amateur astronomer is building their own telescope. Grinding and polishing your own mirrors is a long, arduous process. Instead of …

Ritchey Mirror Grinding Machine | National Air and Space ...

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 to the spindle. I also built another machine of the same type.

Amateur Telescope Making Main Page - Stellafane

Grinding Machine for Large Telescope Mirrors 2017-8-9 · Grinding Machine for Large Telescope Mirrors I designed and built a grinding machine for mirrors up to 42 inches [1.1m] in diameter. By slipping on and off a couple of belts, the machine can quickly …

Obsession Telescopes / Optics

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 more.

Grinding metre scale mirror segments for the E-ELT ground ...

Thin Telescope Mirrors . Abridged from an article appearing in Telescope Making #12 Provided: Courtesy of Astronomy Magazine Article's Author: Bob Kestner . Part I - Grinding . 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.

Astronomy Options | Astronomy, Mirror Making, Telescopes ...

In addition, a great deal of money will be saved: a finished 24" scope will set you back $7,000; grinding your own mirror and building the mount yourself will cost you $2,000. Amateurs have made mirrors up to 41" by hand. A grinding machine relieves the labor, but is not necessary. A 24" is the largest you can comfortably do solo.

Telescope Making Supplies

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 …

Mirror Grinding Machine | Hackaday

However, since grinding a giant 24" parabolic mirror just to cut out a few 8-10" segments is very time consuming and expensive, most people will just opt for the big 24" monolithic telescope.

Astro-Tel - Mirror grinding machine

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 more.

Newport Glass Works, LTD. Grinding, Polishing and Figuring ...

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 ...

Astro-Tel - Mirror grinding machine

Grinding a Mirror "For it is true that astronomy, from a popular standpoint, is handicapped by the inability of the average workman to own an expensive astronomical telescope. It is also true that if an amateur starts out to build a telescope just for fun he will find, before his labors are over, that he has become seriously interested in the ...

telescope mirror grinding machine for sale

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.

Telescope Mirror Blanks / TelescopeMirrorBlanks.Com ...

Rough grinding. This step is about making one side of the glass concave. It will give your mirror its overall focal ratio. If you make the centre deep, you will end up with a fast telescope (e.g. F/D = 4) well suited for deep sky observations. On the opposite, a shallow mirror (e.g. F/D = 8) will be performing very well on planets and the moon.

Astronomy Options | Astronomy, Mirror Making, Telescopes ...

Mar 12, 2018· By Giulio TiberinI March 12, 2018 Roughing and grinding machines mirrors, mirror making, tools Small tutorial on using "minimum" software POLSIM for the machining of a parabolic mirror for telescope, "Assisted" by the use of a simple rotating plate, even in the digging operation of the "arrow" of the initial spherical concavity.


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