Mirror blank kit - ATM, Optics and DIY Forum - Cloudy Nights

Jun 23, 2014· I purchased my 8" mirror making kit from Newport Glass and it included a Pyrex blank, a plate glass tool, all the grits needed from silicon carbide #80 grit for rough grinding through cerium oxide for polishing and figuring. The kit also contains enough pitch to make two pitch laps if you had to.

How I make Telescope Mirror Blanks - mdpub.com

Now that I have several blanks made, it is time to grind and polish one into a telescope mirror and test it out. I can use one blank as the mirror and another as the grinding tool, and have a couple in reserve in case something goes horribly wrong during the grinding and polishing operations. I'll post an update once a mirror is completed.

Telescope Mirrors & Prisms for sale | eBay

Get the best deal for Telescope Mirrors & Prisms from the largest online selection at eBay.com. Browse your favorite brands affordable prices free shipping on many items.

Astronomy Catalog - NEWPORT GLASS WORKS, LTD. & …

newport glass works, ltd.----- telescope blanks --&-- related products -- copyright newport glass works,ltd. 1999

Telescope Mirrors, Blanks, Secondaries, Grinding Materials ...

Pyrex Schmidt-Cassegrain: It doesn't take much more to make a Schmidt-Cassegrain mirror. Blanks are supplied with a started hole in the middle eliminating having to drill. The primary mirror is a full parabola and the secondary is a hyperbola. Custom Blanks: Different shapes and sizes are available. Let us know your specifications.

Casting a Large, Light-Weight Telescope Mirror From ...

This Instructable is all about the process of actually casting the light-weight mirror blanks. The process of grinding, polishing and figuring them into finished mirrors is really fodder for another Instructable, because it is another long, complex, highly technical process with many steps.

Telescope Making Supplies - willbell.com

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 …

Telescope Mirror Blanks - firsthanddiscovery.com

Telescope mirror blanks for amateur telescope makers. We have a wide variety of blanks in Pyrex® and Supremax® 33. Both are excellent low thermal expansion borosilicate glass. Perfect for making a high quality telescope mirror to your own specifications.

From the kiln of Horace Davis - Mirror Grinding Machine

I couldn't help him with the former, but I could the latter. I had an idle mirror grinding machine (a modified MOM 20), so I volunteered to grind and polish his blanks and check for strain using the cross-polarized light test. Soon, three plate glass blanks arrived, two 10 …

SkyBadger - Mirror Grinding Machine

The mirror machine came to me as a result of astronomical horse-trading, swapping a large GEM mount and a 8" Newtonian OTA for the machine as it was and a start kit consisting of two 6" blanks and the grit, rouge and pitch to manufacture a mirror. The grinding machine had been built to the design of the mirror-o-matic design of Dennis Rech ...

Fixed post mirror grinder advice - DIY Astronomer ...

Nov 01, 2011· I'm sure you'll do fine with the grinding Steve, I was just a little taken aback by the rotation speed, but as long as the mirror has three robust cleats in place to hold it, it shoudn't fly off. Many years ago I made a machine to grind large blanks,but the largest I did was a 16" f4.5.

Mirror blank grinding - YouTube

Jul 22, 2008· Grinding a borosilicate mirror blank against a steel plate with 60 grit silicon carbide.

Five Star Optical Supply|Quartz Mirror Blanks for Telescopes

Following in the footsteps of Greg Rohde (Superior Optical Supply), new owners Tim and Chris Anderson (Five Star Optical Supply) will continue to provide high quality, quartz mirror blanks to the amateur astronomy market. Quartz is a very pure glass with an extremely high melting point.

Joy of Mirror Making: Fine Grinding - BBAstroDesigns

The Joy of Mirror Making ... chipping the glass and ruining the blank). ... [4cm] or thinner, the mirror back must be ground flat, or at least regular in shape before beginning fine grinding the mirror's face. Cast a tool specifically for the mirror's back, and grind with 220 grit, inspecting for low unground spots. Grind until they disappear.

King Telescopes, telescope mirror blanks, using both ...

Our intent is to provide a source for lower cost, mirror blanks, and supplies for grinding your own telescope mirror. If I had known as a kid how, well not easy, but indeed not as hard as I would have expected to grind my own mirror. I sure would have had a much nicer scope then. At present we have a supply of high quality Pyrex mirror blanks.

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.

Sources for Parts - home made telescope | Building a Telescope

A major supplier of blanks and supplies for those considering grinding their own mirrors. Newport's sells educational kits for beginners that include the cost of vacuum coating. To compare to ASM, for example, Newport has 8 inch kits, including vacuum coating and a secondary mirror for …

Mirror grinding - scopemaking.net

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 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.

Buy mirror blanks for telescope making

12 Inch Mirror Blanks, 3/4" Thick: $69 + S&H (16); Shipping prices are to the USA - not shipping outside the US, sorry Combined 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 …

tut44 Making A Mirror Grinding Tool - asterism.org

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." ... of the mirror blank using the tool you just finished:

Large Homemade Telescope Making Project

(3) A homemade telescope mirror can be made with more accuracy and smoothness than the mass-produced, commercial mirrors available today. Unfortunately, the cost of mirror grinding kits and pyrex blanks has increased significantly in recent years to the point where any savings from making a mirror versus buying one are minimal at best.

Mirror Blanks For Telescopes - United Lens

United Lens Company supports both the professional and amateur astronomical community. We've sold classic test plate and mirror blanks for nearly as long as ULC has been in business. Additionally, we provide high-end custom solutions including the application of durable thin film mirror …

Joy of Mirror Making: Rough Grinding - bbastrodesigns.com

More importantly, the glass tool can be saved and used later as a mirror blank for a second project. Grinding Stands. I use an old printer stand. Here is a 25 inch [635cm] mirror being rough ground followed by a beautiful grinding stand from the Delmarva Mirror Making Seminar.

Jumping into Mirror Making, by Michael Mills - novac.com

Jumping into Mirror Making Michael Mills. I have been preparing to grind my own primary mirror for a long time. I've collected many fine books on telescope making and mirror grinding, including Richard Berry's Build Your Own Telescope, Sam Brown's All About Telescopes, and Jean Texereau's How to Make a Telescope.I read through all of these books, ordered a 6" mirror kit from Willmann-Bell, and ...

mirror blank suppliers in the uk - Stargazers Lounge

Jun 20, 2013· It involves a lot more Mirror-on-top grinding and neatness after changing grits as there is not much room to go back and correct mistakes. One also needs to be more careful about the flatness of the polishing platform compared to a 2" thick pane to avoid astigmatism (I used a 600mm x 600mm x 40mm concrete flagstone I found lying around in my ...

What are the best sources for mirror blanks? - ATM, Optics ...

Jun 12, 2016· What are the best sources for mirror blanks? - posted in ATM, Optics and DIY Forum: Ever since I found Stellafanes mirror making page, Ive been itching to build my own telescope. Im going to start with a 6-8in. Newt (the classic beginning ATM project!). All I need now are the materials! I can find the yogurt containers pretty easily. For the rest of it, I had to do a little searching.

Telescope Mirror Kits - firsthanddiscovery.com

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.