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 …
A grinding machine relieves the …, Sky and Telescope magazine starting on page 75 carries … A lot of work went into preparing the mirror for initial grinding! Grinding and Testing a Telescope Mirror – The St. John's …
Mechanical assembly is complete. The machine could start grinding now. I still need to build the electronics, and then there's painting and finishing.
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. ... What motor …
Astronomy, telescope making,mirror grinding and testing Large Thin Mirror Making by Mel Bartels Grinding Machines Mirror-o-matic Tom Waineo's Desktop Grinding/Polishing Machine Ken Lilja's Grinding Machine Grinding …
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. All blanks test like this, or they don't ship. …
The machine is shown grinding a 300 mm mirror.How to build a tachometer:
… 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. The grinding machine … 50 Inch telescope (1.3 meter telescope) at the Astronomical …
Very old mirror/lens grinding machine. This machine can grind and polish using different stroke patterns, i.e. w-stroke, short strokes, long strokes, etc. C...
The long screw-eye passes through an embedded nut in the top wooden plate, and presses on the assembly below. The springs pull up against the screw-eye. Turning the screw-eye raises and lowers the grinder height in minute …
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. ... If you need materials for making a grinding tool or pitch lap, we have them available on our Tools page. A second mirror blank can also be ...
Amateur Telescope Making Main Page. "For it is true that astronomy, from a popular standpoint, is handicapped by the inability of the average workman to own an expensive astronomical telescope. It is also true that if an amateur …
Amateur Telescope Making Main Page. Russell Porter. Grinding a Mirror. "For it is true that astronomy, from a popular standpoint, is handicapped by the inability of the average workman to own an expensive astronomical telescope. It is …
Gordon Waite sets up his fixed-post mirror grinding machine to begin rough grinding on an 11" f/4.3 telescope mirror. He uses a grinding tool made from dent...
just a quick vid of my home made mirror grinding machine
Hello all, I'm fascinated by those who can grind and figure their own mirrors for reflecting telescopes. With the availability of kits to finish beautiful ATM dobs from companies like dobstuff, the lure of building one's own scope to high tolerances an…
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 ...
The machine is shown grinding a 300 mm mirror.How to build a tachometer:
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 was the only way to get an affordable large aperture telescope. Back in the day, owning your own 10" telescope was huge. Today, with the low-cost ...
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 ….
Mirror-O-Matic grinding machine. Waite Research LLC | Premium Newtonian Primary Mirrors Fine Grinding a 20" Quartz Telescope Mirror. Rough Grinding on the Fixed-Post Mirror Grinding Machine. Hogging the Curve on a 20" f/4.5 Quartz Telescope Mirror. SkyBadger – Mirror Grinding Machine
Make life easy with state-of-the-art motion control components and positioning systems. And never sace quality by using the PRO Series or eSX 5-Axis CNC lens grinding platform that's right for you. Spheres, aspheres, cylinders, prisms, and freeforms. Glass, ceramics, and hardened steels. Lens sizes from 5-500 mm.
Gordon Waite sets up his fixed-post mirror grinding machine to begin rough grinding on an 11" f/4.3 telescope mirror. He uses a grinding tool made from dent...
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 abrasi...
One of the best methods in grinding is to grind two blanks against each other. That will now give you an end product of two flattened blanks for the work of only one of the two. Grinding the front, which is at the side, and the curve becomes the ground on a telescope. They all need to be of a lesser degree.
Grinding, Polishing and Figuring Thin Telescope Mirrors Abridged from an article appearing in Telescope Making 12, There are several ways to support the grinding and polishing machine turntable, but first make sure the turntable itself is rig It must not bend...
22923231 Virtual International Authority File. Description of a machine for polishing specula with directions for its use together with Remarks upon the art of casting and grinding specula and a description of a twentyfourfoot Newtonian telescope equatoreally mounted at Starfield near Liverpool On polishing the specula of reflecting telescopes 1874 Oxford DNB
This machine is the result. It is capable of grinding up to 20" telescope mirrors. Pictured is a 10". I quickly discovered that changing the original plans was not easy, so I hacked out a 3-D drawing program to help me visualize it. I'd been …
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.
Dick Parker s Telescope Mirror Workshop Cassegrain, The Cassegrain Project The Cassegrain telescope is probably the first type telescope that the ATM would like to make after mastering the basic Newtonian telescope, The primary is a concave mirror and the secondary is convex and placed inside the primary focus, This optic is small enough that a lens grinding machine …
Telescope Grinding 24,397 views Jun 5, 2009 33 Dislike Share Save Messiermarathon 37 subscribers Very old mirror/lens grinding machine. This machine can grind and polish using different stroke...
Cutting telescope mirror blanks out of a thick glass tabletop ... 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. The blank only weighs 10 lbs, 4 oz.
A grinding machine relieves the labor, but is not necessary. A 24" is the largest you can comfortably do solo. Larger mirrors require a helper. ... April 1996, Sky and Telescope magazine starting on page 75 carries an article by Toshimi Taki, analyzing mirror cell design to support thin mirrors. He concludes that thin mirrors are most affected ...