Fine Grinding a 20" Quartz Telescope Mirror - YouTubeClick to view7:21

    2010-03-11 · Gordon Waite shows some steps during fine grinding of the 20" mirror. As the grind progresses through the grades of abrasives, see the technique Gordon uses to change from 5-micron to 3-micron ...

    Author: GordonWaite
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    Rough Grinding a 20" Quartz Telescope Mirror on the Fixed ...Click to view9:53

    2010-03-07 · Fine Grinding a 20" Quartz Telescope Mirror - Duration: 7:21. GordonWaite 55,832 views. 7:21. DIY Vacuum chamber for telescope coating mirror03 - Duration: 4:11. ...

    Author: GordonWaite
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    mirror grinding 20 - redhatsocietyeindhoven

    mirror grinding 20 Solutions Just Right For You. I want to try grinding 8 mirror for a dobsonian Ive got several stepbystep txts on how to do it They all suggest buying a mirror grinding kit but I am able to get all I need elsewhere Ive decided to use 8012022050012micron and 9micron grits but I dont know how much I need for grinding one mirror Pulverized Coal Briquetting Machine Power 7 5 ...

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    build a mirror grinding machine - proman

    From the kiln of Horace Davis - Mirror Grinding Machine. His kiln is computer controlled to follow any schedule of temperature vs time. 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. Get Price. How to Build a Simple ...

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

    Rough grinding. This step is about making one side of the glass concave. It will give your mirror its overall focal ratio. If you make the centre deep, you will end up with a fast telescope (e.g. F/D = 4) well suited for deep sky observations. 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 ...

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    Building a fixed post mirror grinding machine ...

    19.08.2019 · A few years ago, I was thinking about hand grinding a mirror. I watched a YouTube video of John Dobson hand grinding a mirror. I don't really remember how big it was, but it was big. Maybe 14". Maybe larger. John was no youngster in this video and even though he is a master, he sure put a hellova lot of labor into that mirror.

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    Mirror grinding - scope making

    Example : Make 6 strokes, rotate the mirror 40 degrees clockwise, and the tool 30 degrees counterclockwise. Make 7 more strokes, rotate the mirror 60 degrees clockwise, and the tool 20 degrees clockwise. Don't think in degrees, nor numbers, just spin it randomly.

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    Buy mirror blanks for telescope making

    Grinding Thin Mirrors; Contact Us; New Discount Items; Purchase telescope mirror blanks here. We provide 6 inch, 8 inch, 10 inch, and 12 inch telescope mirror blanks in standard 3/4" thickness, and larger mirror blanks up to 20 inches in 1" thickness. All of the mirror blanks we sell are individually tested to be free of internal strain. Order with the payment buttons next to the desired blank ...

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    Fine Grinding a 20" Quartz Telescope Mirror - YouTubeClick to view7:21

    2010-03-11 · Gordon Waite shows some steps during fine grinding of the 20" mirror. As the grind progresses through the grades of abrasives, see the technique Gordon uses to change from 5-micron to 3-micron AlOx...

    Author: GordonWaite
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    Ed Grinds a Mirror

    Chapter Two: Grinding With the 120 Grit, June 11, 2000 My mirror is hyperbolic. In my zeal to achieve an f/8 curve so quickly, I ground out the center of the mirror far more than the required depth. I'm not alone in this; a couple of other grinders also have hyperbolic mirrors, although mine is the worst off. I work carefully, grinding center-over- center in short strokes to take down the ...

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    Obsession Telescopes / Telescopes: 12.5", 15", 18", 20 ...

    20" f/4 Classic $9,495. Plus Shipping & Crating. This is truly big aperture. Thousands of deep sky objects will tempt you. In fact, nearly everything in Uranometria 2000 is within your grasp! The Obsession 20" is the scope that in 1989 revolutionized the Dobsonian. Our user friendly design, craftsmanship second to none, one person set up and super smooth operation have since made Obsession the ...

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    Rough Grinding a 20" Quartz Telescope Mirror .

    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 abrasiv...

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    Joy of Mirror Making: Fine Grinding

    For large thin mirrors, say 12 inches [30cm] or greater and 1.5 inches [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. It's OK for the back to be ever so slightly spherical ...

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    King Telescopes, telescope mirror blanks, using .

    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.

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    Telescope Mirrors - Orion Optics UK

    Telescope MIrror Sets to purchase online. 4 Grades available: Standard, Professional, Research and Ultra. World class optics.

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    [email protected] | Newbie .

    25.04.2020 · Hello everyone, This is my first post on this group, and I'd really appreciate any advice you guys can offer. I recently built a mirror-o-matic machine, and have attempted to grind my first mirror. Ironically, I am finding working the glass to be more difficult and frustrating than building the machine :(My mirror is 208 mm in diameter and my tool is 155mm in diameter (~75%).

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    Mirror Grinding - Take A Class Or DIY? - ATM, Optics and ...

    2017-05-11 · Page 1 of 2 - Mirror Grinding - Take A Class Or DIY? - posted in ATM, Optics and DIY Forum: Ive been interested in grinding/polishing my own Newt mirror for a long time but dont know how to get started. As a beginner, would you recommend attending a workshop or class or is it possible to make a good mirror using other learning resources such as books and online videos?

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    Telescope Mirror Blanks for the Astronomical Industry ...

    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 and anti-reflective coatings. We're also proud to report that our optics are in space and on the moon, a testament to the industry's confidence in the quality of our products. From large ...

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    20 Pcs Wool Felt Mirror Rotary Grinding Polishing Tool ...

    20 Pcs Wool Felt Mirror Rotary Grinding Polishing. Ideal for the rotary grinding and polishing tool. Tool Electric Grinding Head. With 10 cylinder shaped grinding heads.

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

    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 abrasiv... Diy Telescope Grinding Machine Galaxy Note 10 Outer Space Cosmos Inventions Quartz Good Things How To Make. More information... Saved by Russell Johnson. 55 ...

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    Buy mirror blanks for telescope making

    Purchase telescope mirror blanks here. We provide 6 inch, 8 inch, 10 inch, and 12 inch telescope mirror blanks in standard 3/4" thickness, and larger mirror blanks up to 20 inches in 1" thickness. All of the mirror blanks we sell are individually tested to be free of internal strain.

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