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: Precision …

Read On

Some time in the future I hope to build my own Newtonian telescope (OTA) but draw the line at grinding my own parabolic mirror (though who knows what I might do eventually). Therefore, I would like recommendations for suppliers of finished mirrors, please. I'm sure there must be others who are thinking of doing the same thing.

Read On

Ronchi and Foucault Tests on the 20" f/4.5 Quartz Telescope Mirror (added 04/29/10) Figuring a 20" Mirror, Part 1: Reducing a High Zone. Figuring a 20" Mirror, Part 2: Smoothing and Blending Techniques. Making a Ceramic …

Read On

By Nathan Hurst. This is how you make a telescope mirror out of a hunk of glass: Use a sand mixture and another piece of glass to grind away the middle of a concave shape. Repeat with finer and finer grit sand. Dave …

Read On

For rough grinding a 6" mirror, about 1/2 teaspoon of grit is used per wet. With finer grits, proportionately less grit is used per wet. Grits in the25 micron range are often premixed with water to form a slurry, and water and grit are squirted onto the work together from a plastic squeeze bottle (not a spray bottle). Sprinkle on Grit.

Read On

September 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 lapping the blank by ...

Read On

Reducing the weight of these large mirrors - sometimes down to one eighth the weight of an equal sized solid mirror -- allows changes to the superstructure for ground-based telescopes, helping to reduce costs and extending functionality. Corning continues to develop and expand the use of this telescope mirror technology.

Read On

Zambuto Optical Company is a full service custom manufacturer of premium Newtonian primary telescope mirrors from 7" through 24" diameter. Special Notice-We want to let our customers know that during this timeframe we continue to do business as usual. There may be delays with regard to shipments due to outside circumstances beyond our control ...

Read On

Devices like these are still used nowadays by amateur telescope/optical instrument makers around the world. The version they use is a tabletop sized mechanism, but is essential of the same design as Leonardo da Vinci mirror grinding kit, the only difference being the use of an electric motor instead of the hand crank

Read On

Rough grinding a telescope mirror. The Joy of Mirror Making Mel Bartels Rough Grinding ... Creating the curve can be done by several methods: The curve is ground into the mirror face using a grinding tool. The curve is pre …

Read On

Read Jean Texereau, How to Make a Telescope, even if you do find a good mentor to work with. It's a classic, very well written and the methods he describes are still spot on, in year 2020. I would recommend NOT starting with a thin mirror, a really big mirror, or a really fast mirror. An 8 inch f/6 or even 6 inch f/8 is a great starting point.

Read On

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 mirrors are relatively thick. The concave shaped face is made by repeatedly rubbing the primary glass blank over another blank called the "tool". The ...

Read On

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.

Read On

Panasonic HDC-SD60 Telescope mirror grinding machine, Grinding 10" pyrex blank for telescope mirror. Newport Glass Works, LTD. Grinding, Polishing and Figuring …. Grinding, Polishing and Figuring . Thin Telescope Mirrors . Abridged from an article appearing … are several ways to support the grinding and polishing machine ….

Read On

Obtain the right glass. Choose solid grinding tools. Choose the best position to work on mirrors by hand. Grind the back flat. Try and prevent astigmatism. After having the ground and face of the mirror flat through the 220, you are good to begin rough grinding the curve into the mirror. Do some fine grinding.

Read On

A 250 mm / F1.96 parabolic mirror for a Cassegrain telescope. Left: the mirror is mounted on the supporting system. A one-dollar coin is for scale reference. Right: the supporting system is shown separately. The mirror rests on nine independent points at the bottom and six more points on the side.

Read On

Steps for Telescope Mirror Coating. Step 1: Strip the old coating. Step 2: Prepare the praying chemical mixture. Step 3: Clean the mirror. Step 4: Sensitize the mirror surface. Step 5: Spray the mirror surface with the silvering mixture. Step 6: Apply anti-tarnish coating and let dry.

Read On

The process for grinding telescope mirrors at home actually doesn't look too much different than when Isaac Newton first developed it, and he didn't have any power tools. John Dobson was a monk and did much of his work in secret from his …

Read On

A Dobsonian telescope (which utilizes a mirror rather than a lens) is similar in design to a Newtonian telescope in that it is a reflecting telescope (concave collecting mirror is at the rear of the telescope tube, eyepiece is on the side of tube, up near the front).

Read On

Telescope Mirrors, Blanks, Secondaries, Grinding Materials, Testers, Aluminising, Making Advice Information. ... per kilo $40AUD Tin oxide grinding powder per kilo $30AUD Pumice grinding powder per kilo $30AUD 80 Grade grinding powder per 8" mirror $2AUD 120 " " $2AUD 220 " " $3AUD 320 " " $4AUD 500 " " $6AUD 1000 " " $8AUD 1600 " " $8AUD ...

Read On

Telescope Mirror coating - recoating - aluminising, telescope mirror blanks, polishing, grinding and pitch supplies. View Basket (0) £0.00 ex VAT View Quote (0) Register Login. Telephone: +44 (0) 1268 728077 | Fax: +44 (0) 1268 …

Read On

Free Telescope Mirror Grinding Stand Plans. Sep 08, 2011· Free Telescope Mirror Grinding Stand plans - One of the great joys of telescope making is grinding your own mirror. Now days it is easer to buy finished mirrors than grinding kits to make them. Still grinding your own mirror is a key skill that makes you a real telescope maker.

Read On