Telescope Mirror Grinding Machines

Telescope Mirror Grinding Machine | Crusher Mills, Cone ...

The 1.3m telescope mirror blank has been completed by Peter Wangsness and is now at JP Astrocraft in Charleston, … 1.3-m Mirror Grinding Machine … Mirror-O-Matic – Dr. Debug Grinding your own telescope mirror seemed like a cool idea until I did more research and discovered all the physical …

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Building a fixed post mirror grinding machine - Page 2 ...

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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Telescope Mirror Grinding Machines | Crusher Mills, Cone ...

Mirror Grinding Machine, G. W. Ritchey | Flickr – Photo Sharing! … 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. The grinding machine …

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

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 ...

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 …

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Amateur Telescope Making Main Page - Stellafane

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 ...

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Fixed post mirror grinder advice - DIY Astronomer ...

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 and/or tool.

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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. There are lots of good ideas there. The large wood circle will become the base of the turntable.

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Grinding Machine for Large Telescope Mirrors in 2021 ...

Mar 8, 2021 - Grinding machine for mirrors up to 42 inches [1.1m] in diameter. Can be configured for spin or stroke work.

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Mirror Grinding Machine | Hackaday

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 by hand, Laurie Hall built ...

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DIY Telescope Mirror grinding machine - YouTube

Homemade 10inch Mirror Grinding Machine.Sorry for blurred image.....

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How I Make Light-Weight Hexagon or Honeycomb Telescope ...

Rough grinding is complete for the 12.5 inch honeycomb-back telescope mirror blank. The rough grinding went pretty quickly and painlessly this time. I only have maybe 12 hours of actual work in the mirror so far. It's hard to believe, but the rough grinding has removed over a pound of glass. The mirror now weighs in at only only 8 pounds 15 ounces.

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Robotic mirror grinding? - ATM, Optics and DIY Forum ...

PeteDCard81, on 21 Jun 2021 - 09:11 AM, said: The Hubble primary mirror was designed to the correct specification (parameters) but ended up misshaped because of an incorrectly assembled null optics test tool. This test tool was acquired from the Perkin Elmer side of the shop that did work on Defense projects.

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Rough Grinding a 20" Quartz Telescope Mirror on the Fixed ...

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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Document sans nom - Astrosurf

Document sans nom. A history of polishing machines. As often in sciences and technology, Leonardo da Vinci was a pioneer, creating machines for the production of optical devices. Indeed, between 1513 and 1517, he imagined machines to grind and polish telescope mirrors, which, at the time, were made of bronze.

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Panasonic HDC-SD60 Telescope mirror grinding machine - …

just a quick vid of my home made mirror grinding machine

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tut44 Making A Mirror Grinding Tool - Asterism.org

want to learn more about Newtonian telescopes the internet is replete with information about all types of telescopes. Typically, the primary mirror is made of glass. Pyrex is commonly used for the primary mirror because of its thermal stability, but for small mirrors, plate glass will work fine too. Telescope mirrors are relatively thick.

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Ritchey Telescope Mirror Grinding Machine - YouTube

Excerpt from VHS video made at the Lick Observatory optical shops in Santa Cruz, CA before the object was acquired by the Smithsonian. Circa 1985.

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Would an amateur telescope maker be able to grind a mirror ...

Answer (1 of 5): A good friend of mine, and a member of our astronomy club, has ground and polished TWO 32″ diameter mirrors! Yikes! The first one he made was damaged by the coating company, and so he set about making a second mirror! I have looked through both of them, and the images are just st...

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Stellafane Links Page

Rough Grinding in the great outdoors at the Stellafane Mirror Class (October 2002 Stellafane Mirror Class) Telescope Making Workshops and Seminars. Links to World Wide Mirror Class Listings. Link to the Stellafane Mirror Class. Astronomy Conventions & Star Parties

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telescope mirror grinding / polishing machine with ...

The machine is shown grinding a 300 mm mirror.How to build a tachometer:

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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 against with an abrasive grit and water slurry.

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Theories on designing a robotic mirror grinder. - ATM ...

Theories on designing a robotic mirror grinder. - posted in ATM, Optics and DIY Forum: So I have been thinking and doing some preliminary design work on a robotic telescope grinding machine with the intent to grind a 12 inch parabolic primary mirror for a telescope I intend to build. I have been trying to understand the mechanics behind grinding a telescope …

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Waite Research :: 15" F4.5 Telescope Mirror

A look at a 15" Telescope Mirror, with Ronchi history. 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 ...

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Panasonic HDC-SD60 Telescope mirror grinding machine …

just a quick vid of my home made mirror grinding machine

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Building a fixed post mirror grinding machine ...

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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Parabolizing a Telescope Mirror - BBAstroDesigns

- Myron Emerson's Amateur Telescope Mirror Making - GAP 47's machines summary - David Harbour's Understanding Foucault - Albert Highne's Portable Newtonian Telescopes - Neale E. Howard's Standard Handbook for Telescope Making - Albert G. Ingall's Amateur Telescope Making, Volumes 1-3 - H. Dennis Taylor's The Adjustment and Testing of Telescope ...

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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.

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Parabolizing a 20" Mirror, Part 2: Deepening ... - Pinterest

Rough Grinding a 20" Quartz Telescope Mirror on the Fixed-Post Machine 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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Mirror-o-matic.com

The Machines: Documentation: Information for ATMs Zip archive of Mirror-o-Matic Yahoo Groups (2000-2019) 307 Contact Dennis ...

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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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Stellafane Early History

Whimsical Mirror Grinding Machine Cartoon Porter always seemed to be sketching something, and in this 1936 illustration he created a Rube Goldberg style mirror grinding machine, with a napping amateur providing biometric timing control via heartbeat and breathing. ... 1899, was the book Porter used to teach himself telescope mirror making in ...

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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 …

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