We're told to grind the back of the mirror, but why? This is important for thin mirrors so they can be supported evenly by the mirror cell, but what about full thickness mirrors? Here are a few good reasons that I discovered: It allows you make a good decision regarding which side of the mirror will be the front.

small mirrors, plate glass will work fine too. Telescope mirrors are relatively thick. The concave shaped face is made by repeatedly ... There may be a very thin film of plaster over some the tile faces, this will grind off in the first few grinding sessions. ... will need to compete grinding your mirror:

MIRROR GRINDING MACHINE. I made my first mirror grinding and polishing machine over thirty years ago. It used the working principle of the machine illustrated at "A", Page 163, "Amateur Telescope Making" Book 1. A bowl which rotated was fitted to the spindle.

The company has an extremely large inventory of glass products and a full optical fabrication shop to provide advanced optical coatings and manufacturing large mirror blanks. Other services include CNC machining, polishing, slicing, sawing, scribing, grinding, edging, assembly, and more.

Conical Crosssection and Standard Parabolic Mirrors See description on new 6, 8, 10 and " inch conical mirrors as well as inch and larger mirrors for mounting methods. Please note that the 8, 10 and inch mirrors come all required mounting hardware. A General Description of Conical Mirrors. Conical Mirror Specifications

How to Make Your Own Telescope Mirror: [Fig 1] This is a large piece of glass a woman off Craigslist gave me. It was 40"x40" and " thick. Its what I decided to use to make the mirror. Cutting it into smaller sections can be difficult but scoring it with a glass cutter and tapping t...

A lens is a transmissive optical device that focuses or disperses a light beam by means of simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (elements), usually arranged along a common are made from materials such as glass or plastic, and are ground and polished or molded to a desired shape.

48 Years Coating Telescope Mirrors Sacramento Valley Astronomical Society, November 18, 2016. John Dobson and Bob Fies pose for a picture sometime before Nov. 2003. We first started coating mirrors around 1968. In the beginning all the work was new mirrors. Now in 2016 most of the work is recoating.

92505 Reviews Examined. In order to develop the best possible reviews and comparisons of the best orion telescopes, we analyze a lot of user order to craft the list of the best orion telescopes we analyzed exactly 92505 reviews study for orion telescopes will help you choose the bestselling cheap orion telescopes.. Best orion telescopes:

If, however, a mirror is to be used for a scientific application, for example in a telescope, the shape of the surface and the reflectivity of the coating must be known to a very specific degree, to insure the reflected light goes exactly where the telescope designer wants it, and at the right intensity.

Recoating of optical mirrors for telescopes all brands. For optimal performance, telescope mirrors require highquality reflective coating. Our team will guide or assist the telescope owner during the process of removing the mirrors and will also provide guidelines for safe shipping of the mirror.

Grinding, Polishing and Figuring Thin Telescope Mirrors . Part 2 Polishing . Abridged from an article appearing in Telescope Making #13 Provided: Courtesy of Astronomy Magazine Article's Author: Bob Kestner . I am going to start with some additions to topics covered in part 1, on grinding mirrors.

The disc of glass below me is one of seven mirrors that will eventually comprise the Giant Magellan it turns on in full force in 2025, at Las Campanas Observatory in Chile's Atacama ...

Mirror grinding machine | Hackaday · 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 hand, Laurie Hall built this mirror grinding machine from scratch. His site has notes covering his mirror creation machines and ...

So you really want to build a Telescope Mirror. Here's another way to do the work along with some digressions on doing things related to making mirrors. Another work in progress although it's complete enough to make a mirror at this time. I'm just adding thoughts as I .

SiC mirror for space telescope is designed as regular polygon rib structures in the rear face for reducing weight, and both the optical face and the backside ribs are so thin that deformation of the mirror cannot disregard. Therefore, in order to feed back deformation of the mirror to the orbit of grinding wheel, it is necessary to analyze ...

May 04, 2015· Purchasing a new telescope can be baffling, especially for the first timer. And most of us are left wondering, so which telescope is for me? Understanding telescopes and their various accessories can go a long way in choosing the best one for you. Whether you are an amateur astronomer or veteran pathfinder, here are a

Has anyone considered making a telescope mirror by evacuating a space between two sheets of glass? ... enough to make a good primary reflecting telescope mirror? ... put a clear epoxy as a thin ...

Each optical surface is tested up to 29 times as it passes through its many processes of being turned from a blank piece of glass to a highly accurate figured mirror or lens. Below is our selection of Telescope Mirrors available to purchase and a brief description of each grade's qualities.