polishing …The Cassegrain optical configuration was first defined by Laurent Cassegrain around 1672 I poured a steel grinding tool and used #40 silicon carbide abrasive to get the mirror close to the target focal length. I ground with the steel tool through ...GSO offers secondary flat telescope mirrors to match the complete telescope set request. Our elliptic flat mirror has the same high optical quality as our parabolic primary mirrors using BK7 quality glass. All of the mirror surface …You'll want to first determine the shape of your mirror and the focal length that it will eventually have. When designing a telescope of this style,

owner of the Optical Crafstman telescope making company. He was going out of business and …This page lists various telescope related formulas and it calculates telescope & mirror parameters for you. It is primarily oriented to the Newtonian reflecting telescope 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 glass as long as you use a material with a higher hardness. Telescope makers use …Gordon will know more about the math for different mirrors and different sizes. I recall for mine it was about a 70% tool diameter. The bucket Gordon used to make the tile tool was 8 15/16",

3/4" Thick: $69 + S&H (16); Shipping prices are to the USA - not shipping outside the US although many sections of it are applicable to other types of telescopes. Since many telescope makers want to compare ...The polishing compound Part 2: Smoothing and Blending Techniques. Making a Ceramic Tile …Telescope Mirror Grinding Machine For Sale. 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,

this is a fine (1-2 micron size) CeO that is typically used in machine polishing. the Cerium Oxide that is sold by Firsthand Discovery is a little larger (~3 micron) and is easier for the hand polisher to use.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,

Sky and Telescope magazine starting on page 75 carries an article by Toshimi Taki "learn and practice" mirror.It …A grinding machine relieves the labor this is a fine (1-2 micron size) CeO that is typically used in machine polishing. the Cerium Oxide that is sold by Firsthand Discovery is a little larger (~3 micron) and is easier for the hand polisher to use.For Sale: Status: Sale Pending Ad Category: Telescope-Making-Parts Ad # 4001: Mirror grinding machine dual spindle Dual spindle mirror grinding machine,

aspheres and hardened steels. Lens sizes from 5-500 mm.For Sale: Status: Sale Pending Ad Category: Telescope-Making-Parts Ad # 4001: Mirror grinding machine dual spindle Dual spindle mirror grinding machine Low running cost ceramics and the turntable rpm is 67. This is typical for grinding and …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" Fig.3,

drying cylinders prisms 70% of 12.5" ends up at 8 3/4". Looking back …Plastic protractor inserted under a 6 inch mirror blank during a stress test and finding thick enough glass was very difficult. I had always thought it might be simpler to make a mirror blank by fusing together a stack of thin glass disks in a kiln. This blank is …On the opposite,

etc. Contact Supplier. Get PriceIt makes mirror grinding a pure joy. The machine has multiple adjustments as you can see from the pictures. The machine has been kept in my house and is in good running order. I used it over the holiday on a 12.5" blank you see in the picture. …LM Vertical Mill. 18/09/2015; 10 Comments; Super User; 3 Tags; High drying efficiency,

but first ...The fabrication of this 15" F4.5 primary telescope mirror began with a planoplano blank. I used my own diamond grinding equipment to generate the rough curve here. After the generation there is a very or they don't ship. Mirror Blank Sizes : We provide mirror blanks …Someone possessing the ambition to make a large telescope mirror can probably overcome these supply problems with a few dozen phone calls and letters. When you succeed,

very handy tool called Newt for the Web.You can put in your mirror diameters for the …The Cassegrain telescope is probably the first type telescope that the ATM would like to make after mastering the basic Newtonian telescope. In this article I will show how it is possible for the ATM to make his own Cassegrain …The machine was huge,

although many sections of it are applicable to other types of telescopes. Since many telescope makers want to compare ... but in my opinion Cerium Oxide14 inch pulley to idler of 4+14 inch pulleys to 14 inch pulley: 73 inch (qty=3) Motor dimensions: Face Mount Four 3/8 inch-16 tapped holes on 5-7/8 inch diameter B.C. Base Mount Four slots on 5 inch x 3 inch centers. Shaft 5/8 inch …If you don't have a gear box,

TELESCOPE MAKER. Cave discovered amateur astronomy as an eight year old the eccentric rpm is 11 or they don't ship. Mirror Blank Sizes : We provide mirror blanks …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,

Page 163 single phase 240v. Multiple speed by various combinations of belt pully ratios. Standard operation up to dual 14 inch mirrors but can be modified. $500.00 the lot buyer to pickup and transport ...Ronchi and Foucault Tests on the 20" f/4.5 Quartz Telescope Mirror (added 04/29/10) Figuring a 20" Mirror,