Telescope Grinding Machine
Freeform optical grinding with the Cranfield Precision OGM ...
large optical component Grinding. If you're looking for a machine capable of ultraprecision freeform grinding of large optics, you've come to the right place. The OGM is used to produce freeform mirrors used in extreme ultraviolet semiconductor lithography, as well as mirrors for space telescopes.
Mike's Telescope Workshop
Since I've been casting my own telescope mirror blanks for several years now. I finally decided it was time to build a machine to help me grind the edges of the blanks true and round. This is my homebuilt edge grinding machine for grinding down my homecast mirror blanks. Click to see the whole project.
Mirror grinding | Diy telescope, Refracting telescope ...
Grinding a 25Inch F3 Telescope Mirror: Thinning and Flattening the Back. Gordon started with a 2" thick telescope mirror that weighed about 70 pounds. By thinning the blank, he's lightened the mirror by about 20 pounds! This vid... Fnx Najmal. astronomy 4 ishki. Stargazing Telescope. Diy Telescope. Cool Mirrors. Small Mirrors. Radio Astronomy. Machine Image. Optical Shop. Science And Nature ...
Would an amateur telescope maker be able to grind a mirror ...
Answer (1 of 5): The record for largest telescope made the same way amateurs use today goes to Ireland's Lord Rosse, who in 1845 built a 72inchtelescope. Mirror grinding How the Enormous Mirrors on the World's Largest Telescope Are Made Liquid mirror telescope Wikipedia This guy a truck d...
Telescope Making Links
Grinding,Polishing and Figuring Large Thin Mirrors Part 2 Polishing Astronomy, telescope making,mirror grinding and testing Large Thin Mirror Making by Mel Bartels Grinding Machines Mirroromatic Tom Waineo's Desktop Grinding/Polishing Machine Ken Lilja's Grinding Machine Grinding Machine .
Joy of Mirror Making: Introduction
Pounding, scraping, knapping, grinding combined with fire, heat, melting leads us today to grinding telescope mirrors from glass. Making a telescope mirror is one of the most satisfying and sublime joys you will experience. It's also arguably the most accurate surface made by man or machine. If the mirror is expanded to the size of a football field, then the mirror's surface will be smooth to ...
Telescope Making Links
Grinding,Polishing and Figuring Large Thin Mirrors Part 2 Polishing Astronomy, telescope making,mirror grinding and testing Large Thin Mirror Making by Mel Bartels Grinding Machines Mirroromatic Tom Waineo's Desktop Grinding/Polishing Machine .
Constructing a Grinding Machine for large apertures
· I've been using a " equatorial from Orion for many years now and I've finally got the time and money to build a telescope from the ground up. Unfortunately my local astronomy club has noone with experience with ATMing. Given how interested I am on the subject (prospective Astronomy major), I thought it would do me good to start with building a telescope grinding machine to allow me the ...
33 Telescope Making ideas | telescope, diy telescope ...
Nov 6, 2018 Explore Astro's board "Telescope Making" on Pinterest. See more ideas about telescope, diy telescope, telescopes.
Fixedpost machine grinding is where the mirror is on a turntable rotating around 20 PRM [speeds vary], and a 75% tool is on top. They are already curvegenerated. The tool is hanging over the mirror by 1/6 the diameter of the tool, or about 1/8 diameter of the mirror, and is fixed in this position. The motor turns the mirror and the differential rotation enables the grit and water to grind ...
How telescope is made
9 The polishing machine is similar to the grinding machine, but the tool is made from pitch—a thick, soft, resinous substance derived from coal tar or wood tar. A pitch tool is made by placing tape around the circumference of a curved dish, pouring in hot, liquid pitch with other ingredients such as beeswax and jeweler's rouge, and letting it cool back into a solid. A pitch tool can polish ...
Telescope Making / O. Richard Norton |
I was dumbfounded, never having touched a grinding machine before. But Cave had an incredible talent for reading people and knew I was dying to make a mirror. Fortunately, I had been watching Bach grind his 6inch mirror on the potterywheel machines. With melted pitch he would stick 1inch tiles onto a flat glass or metal plate to be used as a grinding tool. Then he would pack it with plenty ...
Lens Grinding Machine | Astromart
Commercial lens grinding and polishing machine. Produces a back and forth "W" stroke as the tool rotates. Upper disk can be made to rotate also. Independent variable speed controls allow you to vary the speed of rotation of the tool seperately from the lower disk. Has a pumping system for the polishing compound that continuously flushes the disks with the liquid as the machine runs. Once set ...
Christiaan Huygens and his telescopes
Figure 2: Lensgrinding machine of Christiaan Huygens (From his 'Opuscula Posthuma', published posthumously by Janssonio Waesbergios, Amsterdam, 1728 ) What made it very difficult to produce usable lenses, as the Huygens brothers soon found, was that the whole art of lens grinding was surrounded by secrecy. They couldn't benefit much from the experience of professional lens makers ...
Grinding/Polishing Machine | Pierre Lemay
Amateur Astronomer and Telescope Maker Menu Skip to content. About me; Projects. 20 inch ball scope; Hinged Shelter; Ball Scope Tracking Platform; Dual Speed Helical Crayford Focuser (DSHC) A DSHC You Can Make at Home; Past Telescopes; Telescope Making Tools. Grinding/Polishing Machine; Foucault/Caustic Tester; Machining Equipment; English; Français; Grinding/Polishing .
Grinding and Polishing Machine
· Grinding and Polishing Machine. The basis of this machine came from Warren Fillmore's article in "Advanced Telescope Making Techniques", by Allan MacIntosh, where he gives a good argument for the "Elgin" type machine. However the variable speed drive is original and done mechanically. The 1/3 HP motor (blue) and first stage reduction is mounted on a platform (white) that .
Working on NASA's Precision Telescope
NASA scientists challenged ABTech to develop a multifunctional machine that would act as a grinding lathe, an indexing tool for raster grinding, and an assembly station—all in one. The machine would safely and quickly produce optics for their longdelayed NuSTAR Xray telescope. ABTech met the challenge and delivered the machines to Columbia University's Nevis Astrophysics Lab to help put ...
telescope mirror grinder
How I built an edge grinder for telescope mirror blanksHow to Grind a Telescope Reflector Mirror Know About Life. A sturdy post is needed to mount the grinder arm on So I used 1 inch steel pipe for the post I started by mounting a 1 inch floor flange to the corner of the machine How to Grind a Telescope Reflector Mirror Telescope mirrors are rounded pieces of glass used to focus the weak light ...
Grinding/Polishing Machine | Pierre Lemay
Amateur Astronomer and Telescope Maker Menu Skip to content. About me; Projects. 20 inch ball scope; Hinged Shelter; Ball Scope Tracking Platform; Dual Speed Helical Crayford Focuser (DSHC) A DSHC You Can Make at Home; Past Telescopes; Telescope Making Tools. Grinding/Polishing Machine; Foucault/Caustic Tester; Machining Equipment; English; Français; Grinding/Polishing Machine.
Utilize our ultraprecision machining expertise with ...
Metrology systems for NASA's Chandra space telescope mirrors; CNC development, enabling the world's first CNC controlled cam and crank grinding machine ; Worldleading large optics grinding machine for the production of the next generation Extreme Ultraviolet (EUV) silicon wafer lithography system mirrors; Machine – Process – Partnership . Every appliion is different, which is why ...
How I Make LightWeight Hexagon or Honeycomb Telescope ...
· Rough grinding is complete for the inch honeycombback telescope mirror blank. The rough grinding went pretty quickly and painlessly this time. I only have maybe 12 hours of actual work in the mirror so far. It's hard to believe, but the rough grinding has removed over a pound of glass. The mirror now weighs in at only only 8 pounds 15 ounces. Incredible! The curve is still 3 thouhs ...
Services
ID/OD cylindrical grinding is ideal for achieving tight tolerance diameters on hard materials such as Carbide or hardened Tool Steels. Aspen machining has experience with anything from Ceramic Compaction Tooling to building the axles for the light filter wheels for the James Webb Space Telescope's NIRCam (NearInfrared Camera) instrument.
