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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 finishing.

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Buy mirror blanks for telescope making

10 Inch Mirror Blanks, 3/4" Thick: $55 + S&H (16);Shipping prices are to the USA - not shipping outside the US, sorryCombined 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 website for great prices on plate glass

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Obsession 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 .

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TELESCOPE MAKING

Diamond generator for hogging out mirrors - the blue is the angled cutter: Primary Mirror. The primary mirror at f/3 required a lot of glass to be removed to reach the correct depth. Even with a grinding machine this is laborious to say the least. To get over this problem Brian built a diamond generator. This can hog out deep mirrors in half an

Mirror Grinding Machine

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. CERAMIC ABSTRACTS. H.E.S. Mirror grinding machine . FRANKT. Optical measurements of reflectance and absorptance of metals.

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Mike'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 12.5 inch diameter, 1.5 inch thick, light-weight honeycomb-back telescope mirror blank that I made myself.

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grinding / polishing machine for telescope mirrors

Mechanical assembly is complete. The machine could start grinding now. I still need to build the electronics, and then there's painting and finishing.

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telescope mirror grinding machine for sale

Nov 07, 2015· Astro-Tel. 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" Fig3, Page 163, "Amateur Telescope Making" Book 1.

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Making a homemade mirror grinding machine

Mar 06, 2006· Making a homemade mirror grinding machine - posted in ATM, Optics and DIY Forum: I want to make a motorized mirror grinder, any good info on this, i have a couple geared motors, low speed high torque. One more questionwill 1 1/2 shaft size pillow block bearings work good for a homemade EQ mount? Thank you, John

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 [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 .

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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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Machine grinding a 25" telescope mirror.

Nov 16, 2012· Grinding 500 grit on a 25" f/3.0 meniscus mirror. Tool is a 19" glass tiled stone tool with about a 3" overhang and about 37 pounds of weight.

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Telescope Mirror Making: Part 3, Rough Grinding

Gordon Waite sets up his fixed-post mirror grinding machine to begin rough grinding on an 11 f/4.3 telescope mirror. He uses a grinding tool made from dental plaster and steel pieces to speed up grinding. Gordon shows the setup for spin grinding at high speeds and with added weights to get the job done as fast as possible.

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Making mirrors for giant telescopes

The Starfire project provided much of the funding for a new polishing lab built in 1990 and equipped with an 8 m grinding and polishing machine and a 24 m test tower, which were first used to figure the 3.5 m mirrors. (replacing the six 72 inch telescopes of the original Multiple Mirror Telescope) and the first of two Magellan telescopes at

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Using the Fixed-Post Grinding Machine for Rough Grinding

Gordon Waite sets up his fixed-post mirror grinding machine to begin rough grinding on an 11" f/4.3 telescope mirror. He uses a grinding tool made from dent...

Ritchey Mirror Grinding Machine

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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telescope grinding machine

Nov 06, 2020· telescope mirror grinding machines - MC World. 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.

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Panasonic HDC-SD60 Telescope mirror grinding machine

just a quick vid of my home made mirror grinding machine

Ritchey Mirror Grinding Machine

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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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?

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Machine grinding a 25" telescope mirror.

Grinding 500 grit on a 25" f/3.0 meniscus mirror. Tool is a 19" glass tiled stone tool with about a 3" overhang and about 37 pounds of weight.

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Mirror Grinding Machine

Sep 26, 2006· Mirror Grinding Machine. 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 lapping the blank

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Rough Grinding a 20" Quartz Telescope Mirror on the Fixed

Mar 07, 2010· This video shows how to setup a mirror grinding machine for fixed-post grinding, also known as spin grinding or spinning. After setup, you'll see how abrasi...

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Mel Bartels' Amateur Telescope Making

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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Telescope Mirror Blanks / TelescopeMirrorBlanks.Com

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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Электроника: [View 34+] Telescope Lens Grinding Machine

Get Images Library Photos and Pictures. telescope mirror grinding / polishing machine with tachometer - YouTube Mirror grinding Petzval Lens New Assignment for Telescope: Better Measurements of Dark Energy Oct. 3, 1947: Birth of Palomar's 'Giant Eye' | WIRED Document sans nom Astro-Tel - Mirror grinding machine . OptoTech NC-Controlled Grinding, Lapping and Polishing Machine .

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Telescope Mirror Making: Part 3, Rough Grinding

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...

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100-inch telescope mirror, on grinding machine — Calisphere

100- inch telescope mirror on grinding machine, at Mount Wilson Observatory's Pasadena laboratory.Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.

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Building a fixed post mirror grinding machine

Aug 19, 2019· Re: Building a fixed post mirror grinding machine. I I had a nice piece of 3/4" stainless dowel that was begging to be used. So I bought a cheap pillow block to provide the locator for the metal dowel, and then drilled the overarm to fit. These pillow blocks are $8 and come complete with a locking collar - great deal.

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DIY Telescope Mirror grinding machine

Jul 08, 2013· Homemade 10inch Mirror Grinding Machine.Sorry for blurred image.....

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Stellafane ATM:Mirror Making Myths

Mirrors can only be made with Special Precision Equipment in Expensive Factories or Labs; Not True! Telescope mirrors can be made in your kitchen, basement or garage with nothing more than the mirror blank and a second piece of glass (called the tool) to rub the mirror .

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Fixed post mirror grinder advice

Nov 01, 2011· Basically there are two types of grinding/polishing machine. The 'traditional' type which involves the mirror rotating at a relatively slow speed, a few rpm for a big mirror (16-20 inches) with the tool moving across the mirror, from side to side, at a higher rpm depending on the size of the mirror .

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Stellafane ATM: Pour a Pitch Lap

1. Clean: Make sure your plaster disk is clean and dry.If you are using a glass substrate or tile tool, clean the surface with turpentine. 2. Build a Dam: Using 2" wide masking tape, build a dam at least 3/4" high around the edge of the disk to hold the pitch in when you pour it. .

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Lens & Mirror Making Best lenses and mirrors are both made

• Best lenses and mirrors are both made by grinding the surface • Start with a mirror or lens blank • For mirrors only surface needs to be good • Typical mirror want pyrex (eg BK7) • Then need a tool blank – poorer glass & softer glass • Place mirror on top tool • Now add grinding compound (grit) between tool & mirror

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 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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How I built an edge grinder for telescope mirror blanks.

I borrowed a few ideas from the Mirror-O-Matic mirror grinding machine, particularly how to mount the turntable on top of the pulley. Anyone building machinery for cold-working glass should have a look at the MOM web site and plans. I drew concentric circles on the top of the tabletop in the sizes of common telescope mirror blank diameters

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Using the Fixed-Post Grinding Machine for Rough Grinding

Gordon Waite sets up his fixed-post mirror grinding machine to begin rough grinding on an 11" f/4.3 telescope mirror. He uses a grinding tool made from dent...

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mirror grinding machine for sale

Mirror Grinding Machine. telescope mirror grinding machine based on Dennis Rech's M-o-M 20. Read more. SkyBadger - Mirror Grinding Machine. I have a Mirror-o-maticmirror making machine that I swapped with MikeMS for a Newtonian telescope that was no use to me. The grinding machine had been built to the design of the mirror-o-matic design of

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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 [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 .

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Telescope Mirror Making: Part 2, Hogging to depth

Feb 11, 2017 - This is part 2 of my video series documenting grinding and polishing a 12.5 inch telescope mirror. I'm using a spin or fixed post grinding machine. This vi...

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Newport Glass Works, LTD. Grinding, Polishing and Figuring

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.

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