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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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Mirror grinding - Telescope making

A good starter size is the 150 mm (6") mirror. A 200mm (8") will also work. Most ATM books and websites recommend a Pyrex® mirror blank, but in my opinion, annealed plate glass is better for this first, "learn and practice" mirror.It is cheaper, it is softer …

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Joy of Mirror Making: Polishing - BBAstroDesigns

Polishing a mirror is one of the great joys you will experience as a maker and builder. It's also arguably the most accurate surface made by man or machine. If the mirror is expanded to the size of a football field, then the mirror's surface will be smooth to 1/1000 inch or 1/30 millimeter!

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telescope mirror grinding machine

The 60-inch telescope mirror on grinding machine, tipped forward for testing. A workbench with equipment is seen on the left-hand side; a chair is in front of the tilted mirror. Photograph probably taken at the Mount Wilson Observatory's optical laboratory, Pasadena.Image courtesy of the Observatories of the Carnegie Institution for Science ...

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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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Astro-Tel - Mirror grinding machine

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.

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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 M-o-M designs finally inspired me to just get up and do it. Over the years, I'd been collecting motors, gear boxes, pulleys, etc. Most …

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Mirror Grinding Machine | Hackaday

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 …

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Telescope Mirror Blanks Manufacturer and Supplier ...

22" - 2.000". Telescope Mirror Blanks Made to Your Specifications. If one of our standard telescope mirror blanks isn't exactly what you're looking for, Advanced Glass can custom make a telescope mirror blank to your specifications. AGI can manufacture mirror blanks up to 40" in diameter. AGI can diamond machine ID holes into your mirror ...

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

Loc: Oregon, South Western Coast. Posted 22 June 2021 - 02:01 PM. Robot or CNC machining of glass has been around since late 1960's, they were simple machines using punched tape. produced by a computer. It was used on free form optics. There was what is called profile grinding / …

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Waite Research :: 15" F4.5 Telescope Mirror

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 target focal length.

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RFO Telescopes and Equipment – Robert Ferguson Observatory

The telescope mirror was purchased from Jeff Baldwin. The Project 40 team finished rough grinding, fine grinding, polishing and figuring the hand-built polishing machine. Optical testing used a large zone mask for initial figuring and two years of interferometric measurements and figuring to …

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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 if the drip pan is moved to the fast shaft on ...

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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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Explore how telescope mirrors are made | Astronomy.com

Making a telescope mirror. To start, a new mirror blank is "sanded" down to create a precise parabolic curve in a process called grinding. To do that, the blank is …

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Buy Telescope Mirrors - Jim's Mobile

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.

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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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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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Build your own telescope part 1: The mirror – Thomas ...

On the opposite, a shallow mirror (e.g. F/D = 8) will be performing very well on planets and the moon. The theory behind grinding is that you can remove glass as long as you use a material with a higher hardness. Telescope makers use silicon carbide powders (a.k.a. carborundum) for this task. It is cheap and comes in various size (can range ...

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Obsession Telescopes / Optics

Obsession Telescopes feature primary mirrors made by two of the best established and most reputable optical companies serving the astronomy community today. Optical Mechanics Inc. (OMI) supplies Obsession with 12.5" to 25" aperture mirrors. Ostahowski Optics supplies Obsession with 15" to 22" aperture mirrors. Ostahowski Optics is well known as ...

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Mike's Telescope Workshop

I finally decided it was time to build a machine to help me grind the edges of the blanks true and round. 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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Hubble's Mirror Flaw | NASA

Once Hubble began returning images that were less clear than expected, NASA undertook an investigation to diagnose the problem. Ultimately the problem was traced to miscalibrated equipment during the mirror's manufacture. The result was a mirror with an aberration one-50th the thickness of a human hair, in the grinding of the mirror.

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Waite Research Telescope Mirrors :: Home

Fine Grinding a 20" Quartz Telescope Mirror. Rough Grinding on the Fixed-Post Mirror Grinding Machine. Hogging the Curve on a 20" f/4.5 Quartz Telescope Mirror. Astronomy magazine names Waite Research's Renegade telescope a top astro product of 2015. The 20" Renegade telescope offers fabulous viewing without climbing a ladder.

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

Mirror-O-Matic grinding machine. When I decided in 2009 after a ten-year break to get into mirror making again, it quickly became clear to me that I would need to construct machine, as hand grinding big mirrors is not something very beneficial for the hands of a musician.

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Mirror Grinding Machine - ATM, Optics and DIY Forum ...

Mirror Grinding Machine - posted in ATM, Optics and DIY Forum: I have some interest in building a grinding machine for possible up to an 18 mirror, but something that will also do a 6 or 8 mirror. I have plans for the Mir O Matic but would like to do something a bit more modern. I have some ideas about using a AC drive and a large aluminum disk for the turntable and have made a parts list …

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Telescope Making Links - Supplies and Components | STAR ...

Grinding Supplies. Got Grit Salem Distributing Ortho Cast, Inc. - Orthodontic Study Models Dental Supplies Laboratory Equipment ... Discovery Telescopes - Good, moderately priced mirrors for Newtonians E-Scopes (aka Coulter Optical) - Newtonian mirrors and kits ...

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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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Making mirrors for giant telescopes - SPIE Digital Library

Similar mirrors are used as the 3.4 m secondary mirror of the Large Synoptic Survey Telescope (LSST) and the 4 m secondary and tertiary mirrors of ESO's ELT. Also around the same time, Roger Angel at the University of Arizona developed a way to maintain the stiffness of traditional mirrors but with a small fraction of the weight, extending ...

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Kits building making homemade telescopes schools amateur ...

TELESCOPE BODY AND STAND SECTION 8"(200mm) Tube Swivel box assembly Main mirror mount Secondary mirror mount Drawtube and eyepiece holder Dobsonian pedestal mount Base assembly $390.00AUS TELESCOPE MIRROR MAKING SECTION 8"(200mm) Mirror blank Tool Grinding compounds Polishing compound Lap compound Aluminizing of mirror Secondary mirror $460 ...

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telescopes mirror grinding equipment

telescopes mirror grinding equipment ; SPAC Mirror Lab. The Saint Petersburg Mirror Lab is a small band of dedicated mirror grinders and telescope makers living in the Tampa Bay area of Florida. We offer a mirror making class for interested persons. ...

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Strasbaugh polishing and grinding machine | Astromart

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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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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