Telescope Mirror Grinding Machine

Telescope Mirror Grinding Machine

Making a homemade mirror grinding machine - ATM, Optics ...

Feb 15, 2016· The machine is shown grinding a 300 mm mirror. How to build a tachometer:

How I make Telescope Mirror Blanks - mdpub

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.

Telescope Mirror Kits - Firsthand Discovery

- 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 ...

Stellafane ATM: Measuring Sagitta

Making A Mirror Grinding Tool By Allen Malsburry The average person would never think, "I can make my own telescope." Most amateur astronomers believe, "I can buy a better telescope than I can build." Neither is actually correct. For many decades now, amateur astronomers have been building their own telescopes.

The process was performed at Cranfield University Precision Engineering on the BoX grinding machine (Figure 4, left), designed for rapid and accurate grinding of large telescope mirror segments [15]. X-Ray Telescope Mirrors-Materials, Manufacture, Tolerances And Metrology

Telescope Mirrors - Orion Optics

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 and grinds faster, needing less abrasives and with these small sizes, the low expansion glass like Pyrex has no practical (visible at ...

Mirror grinding - Telescope making

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.

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

Want to build your own telescope? Start with one of our telescope mirror kits. Each kit comes with a telescope mirror blank and all the abrasives (silicon carbide grits and white aluminum oxide powders), cerium oxide polish and pitch to grind and polish it to your specifications. They are great for beginning and expert amateur telescope makers ...

Document sans nom - Astrosurf

Telescope Mirrors, Blanks, Secondaries, Grinding Materials, Testers, Aluminising, Making Advice Information. Telescope Mirrors, Blanks, Tools, Aluminising, Testing & Materials: HOME PAGE TELESCOPES & ASTRONOMY ... TELESCOPE MIRROR ALUMINISING Mirror Size (ins) Aluminium + Quartz R>91% Aluminium Enhanced R>95% Silver Enhanced + Protected R>98% 6 ...

Buy mirror blanks for telescope making

AGI also supplies Schott SUPREMAX 33 mirror blanks. SUPREMAX 33 is a borosilicate Pyrex equivalent, and is an excellent alternative for telescope mirror blanks. Our blanks have the following standard characteristics:

Strasbaugh polishing and grinding machine | Astromart

Jan 26, 2012· After the mirror is cast, it moves to the Large Polishing Machine, where the mirror's shape is refined and perfected — down to the millionth of …

Mirror-o-matic

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 ...

AGI Products: Telescope Mirror Blanks

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 question ...will 1 1/2 shaft size pillow block bearings work good for a homemade EQ mount? Thank you, John

Mirror Grinding Machine | Hackaday

It is a fine-looking, near full-thickness, 10 inch diameter blank that I intend to grind and polish into a 1st class telescope mirror. Here is a stack of my home-made 8 and 10 inch mirror blanks. The second from the bottom is the one above. I can use the thinner blank below it as the grinding tool. UPDATE

Obsession Telescopes / Optics

Sep 01, 2018· Modern optical telescope use mirrors and very few lenses. Unlike bathroom mirrors, where the shiny layer is sealed in to the back of the glass, telescopes use so-called "first surface" mirrors ...

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

Want to build your own telescope? Start with one of our telescope mirror kits. Each kit comes with a telescope mirror blank and all the abrasives (silicon carbide grits and white aluminum oxide powders), cerium oxide polish and pitch to grind and polish it to your specifications. They are great for beginning and expert amateur telescope makers ...

Fixed post mirror grinder advice - DIY Astronomer ...

Don't confuse lower case r (mirror radius) with upper case R (Radius of Curvature) which is twice F (Focal Length). Calculating Sagitta. Before you start grinding, you should have decided on your mirror's desired focal length. The two most common beginners' mirrors, the …

Stellafane ATM Main Page

Throughout the grinding and final lapping stages, the objective has been to reduce pits and scratches to the smallest possible size. However, no amount of grinding can produce a surface smooth enough or sufficiently transparent to meet the needs of a first-class telescope objective. Different techniques are …

The Joy of Mirror Making: Parabolizing - BBAstroDesigns

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 Making Supplies - willbell

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. ... [Mike's telescope workshop] [Mike's home-built ...

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.

tut44 Making A Mirror Grinding Tool - Asterism

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 of them came from industrial junk yards.