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.
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 ...
Joy Of Mirror Making Rough Grinding. 2019-1-22rough grinding a telescope mirrorhe joy of mirror making mel bartels rough grinding also theres the difficulty of creating a spherical curve in the mirror facehe grinding wheel on a boom approach is difficult because it is hard to anchor the mirror and the booms pivot so that they do not move in relation to each otherlass tools.
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.
Please see the Buy Telescope Mirror Blanks page for low prices on plate glass mirror blanks. If you'd like to buy a complete mirror grinding KIT, with all abrasives and grinding tool included, please see the Buy Telescope Mirror Kits. website for the lowest prices on plate glass telescope mirror grinding kits.
The November 1974 issue of Sky & Telescope (page 325) carried an article by Eric G.H. Mobsby of Blandford Forum, Dorset, England, describing a method of testing medium and long focus mirrors with a special inverse grating that can be interpreted with the ease of a Null Test. Robert A. Cox, then Co-editor of the Gleanings for ATM's column ...
18 INCH Glass Reflector Telescope Mirror Lens Optical Optics 1" Thick BLUE TINT. $699.99 +$19.99 shipping. Make Offer - 18 INCH Glass Reflector Telescope Mirror Lens Optical Optics 1" Thick BLUE TINT. Telescope Secondary Mirror 4.50" - .
The Machines: Documentation: Information for ATMs Zip archive of Mirror-o-Matic Yahoo Groups (2000-2019) 307 MB Contact Dennis ...
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.
Astronomical Telescope Accessories Main Mirror D135F1100 Short-axis Secondary Mirror 25mm Newton Reflector Spherical Primary Mirror Lens Secondary Mirror DIY Astronomical Telescope Mirror Concave Mirror, 5.9" Dia, 300mm Focal Length - Eisco Labs
May 01, 2010· just a quick vid of my home made mirror grinding machine. ... Using the Fixed-Post Grinding Machine for Rough Grinding an 11-inch Telescope Mirror - .
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
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 for sale - apemonaco. Mirror Grinding Machine. telescope mirror grinding machine based on Dennis Rech's M-o-M 20. rotary flat metal polishing machines for sale. Rotary flat metal polishing machines for sale are used for various flat small metal fittings surface polishing by changing different fixtures.
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 ...
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.
telescope mirror grinding machine for sale. mirror grinding machine for sale africarhirecoza. Grinding Machine for Large Telescope Mirrors I designed and built a grinding machine for mirrors up to 42 inches [11m] in diameter By slipping on and off a couple of belts, the machine can quickly be. Live Chat; Newport Glass Works, LTD Grinding ...
A 10-inch telescope mirror has a 10-inch or 250mm primary mirror. You can collect more light with a larger aperture. A 20-inch telescope mirror for sale will collect 6.25 times more light than an 8-inch telescope mirror will. However, the price of the mirror increases as the mirror gets larger. A larger telescope primary mirror will also make ...
Telescope Mirror Blanks Providing telescope mirror blanks and kits to telescope makers. Mirror blanks are individually tested for internal strain. Plastic protractor inserted under a 6 inch mirror blank during a stress test, to illustrate what stress would look like - if there were any present.
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.
DIY Mirror Grinding and Telescope Making. Bill's Homemade Telescope Making Project This web page provides an overview of my large homemade telescope making project. I read several telescope and mirror making books and visited many amateur telescope making or "ATM" websites to learn how to build a 14.5 inch homemade telescope of this size.
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.
Astronomical Telescope Mirrors and Flats Due to pressure of work, we are not able to offer a comprehensive list of mirrors and flats for sale. However, if you have a specific requirement please ask us as we still have the occasional mirror and flats ( .
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. Get Price; Amateur Telescope Making Main PageStellafane
