33 Telescope Making ideas | telescope, diy telescope ...
Grinding my first 6" f/8 Telescope Mirror - YouTube. Diy Telescope. Bath Caddy. Science. Lathe. Binoculars. Mirrors. ... PM builds one and speaks to John Dobson, the man behind the plans, about the joys of DIY astronomy. Diy Telescope. 2017 Vbs. ... An edge grinding machine for telescope mirror blanks. Diy Telescope. Grinding. Light Bulb. Table ...
grinding machine design elementals [Archive] - IceInSpace
You could try "Advanced Telescope Making Techniques" by MacIntosh. There are several grinding machines plans given as examples. I too would recommend the making of a couple of smaller mirrors to get the feel of how things "blend" when using a machine. I used to remove the arm from my machine and finish off the polishing by hand on the rotating ...
Mirror-O-Matic
Build a machine to grind the mirror (AKA mirror-o-matic) Buy some glass. Mirror-O-Matic . One of the coolest ideas I found on the Web was this thing called a Mirror-O-Matic. Credit goes to Dennis Rech for making available the plans on the Internet on how to build it.
mirror grinding machine for sale - mayukhportfolio.co.in
telescope mirror grinding machine based on Dennis Rech's M-o-M 20. Read more. SkyBadger - Mirror Grinding Machine. ... If you plan on working your mirror by machine, you'll run into problems that will... Read more. Mike's Telescope Workshop - Michael Davis Publishing.
Telescope Mirrors, Blanks, Secondaries, Grinding Materials ...
TELESCOPE MIRROR MAKING BOOKS Advanced Telescope Making Techniques Volume 1 & Volume 2 $60AUD Amateur Telescope Making Volume 1, 2 & 3 $70AUD Build Your Own Telescope Complete plans for 5 high quality telescopes $70AUD The Dobsonian Telescope A practical manual for building large aperture telecopes $82AUD How To Make a Telescope 2nd Edition ...
Astro-Tel - Mirror grinding machine
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, Page 163, "Amateur Telescope Making" Book 1. A bowl which rotated was fitted to the spindle. I also built another machine of the same type.
M-o-M Free Preview - Mirror-o-matic
Mirror-o-Matic was designed to be a very low cost astronomical mirror grinding, polishing and figuring machine. Its attributes are: 1. It can be built for somewhere between $200 and $400. 2. It is constructed of hardware store items and it needs no machined parts. 3. It is constructed primarily of 3/4 inch plywood and has few close tolerances. 4.
Mirror grinding | Diy telescope, Refracting telescope ...
Astronomy. Grinding a 25-Inch 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!
telescope mirror grinding / polishing machine with ...
The machine is shown grinding a 300 mm mirror.How to build a tachometer:
How to Make Your Own Telescope Mirror - Instructables
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 0.75" 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 …
Dick Parker's Telescope Mirror Workshop: Cassegrain ...
Grinding the secondary is just like grinding any other optic except in minature. I ground the secondary with the workstand and worked the tool on top just like I would grind a larger mirror. This optic is small enough that a lens grinding machine could work well.
Astronomy Options | Astronomy, Mirror Making, Telescopes ...
Currently manufacturing a 16″ diameter 1″ thick plate glass f3.88 Newtonian telescope mirror. Doing this with my new fixed post grinding machine built this summer. Work is progressing well, and very efficient.
Making a 25 inch F2.6 mirror - BBAstroDesigns
Questions answered. Yes, a 25 inch [0.64cm] F2.6 that is half-inch [13mm] thick can be made by an amateur telescope maker. The greatest challenge by far is the extreme amount of parabolization required. Astigmatism and good mirror cell support are solvable issues.
Mirror grinding - Telescope making
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 ...
Mirror-o-matic
The Machines: Documentation: Information for ATMs Zip archive of Mirror-o-Matic Yahoo Groups (2000-2019) 307 Contact Dennis. The Machines: Documentation: Information for ATMs Zip archive of Mirror-o-Matic Yahoo Groups (2000-2019) 307 Contact Dennis ...
Stellafane ATM: Make a Plaster Disk
You should plan to make your plaster disk at least the same thickness as your mirror blank. Plaster is a light weight material, so a little extra thickness will not add much weight and will increase the stiffness of the disk and be easier to grip when grinding. Note that Dental Stone is a great alternative to plaster.
Telescope Making Links - Designs and Techniques | STAR ...
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 Mirror-o-matic Tom Waineo's Desktop Grinding/Polishing Machine Ken Lilja's Grinding Machine Grinding Machine Figuring Figuring a Paraboidal mirror by thermal ...
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.
DIY Telescope: Polishing the Mirror - YouTube
Up until now, we've used abrasive grits to remove the glass, but now we'll be using a polishing compound called Cerium oxide to put the finishing touches to ...
GRINDING A TELESCOPE REFLECTOR WITH TOOL …
Grinding telescope reflectors of 15-inch diameter and over makes it necessary to employ a motor-driven turntable. Small mirrors are generally ground and polished by rotating the tool, fastened to the turntable, and working the mirror blank by hand either in straight or in circular strokes over the tool. In this case the overhang of the mirror ...
Making a homemade mirror grinding machine - ATM, …
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 …
Joy of Mirror Making: Polishing - BBAstroDesigns
Polishing a mirror is one of the great joys you will experience as a maker and builder. 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 1/1000 inch or 1/30 millimeter!
Fixed-post 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 curve-generated. 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.
Making a Mirror grinding & Polishing machine - ATM, Optics ...
Page 1 of 5 - Making a Mirror grinding & Polishing machine - posted in ATM, Optics and DIY Forum: Hello, I am on the half of the way to make a mirror grinding machine inspired by original M-O-M design. I made the pulley arrangement such a way that, both the turn table & eccentric spins at 50 RPM fixed. I wont go for making mirror bigger that 10.5 (or max 12).
Fixed post mirror grinder advice - DIY Astronomer ...
Basically there are two types of grinding/polishing machine. The 'traditional' type which involves the mirror rotating at a relatively slow speed, a few rpm for a big mirror (16-20 inches) with the tool moving across the mirror, from side to side, at a higher …
Build your own telescope part 1: The mirror – Thomas ...
On the opposite, 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 silicon carbide powders …
Mirror grinding machine - The Home Shop Machinist ...
I assume you are talking about a telescope mirror. I have read a lot and ground one small mirror some years ago but did it all by hand. If I remember properly, some of the features you want in a grinding machine are the ability to change the stroke's length as well as the path it takes across the surface (radial, cordial).
Homemade Telescope Making - Google Search
(3) A homemade telescope mirror can be made with more accuracy and smoothness than the mass-produced, commercial mirrors available today. Unfortunately, the cost of mirror grinding kits and pyrex blanks has increased significantly in recent years to the point where any savings from making a mirror versus buying one are minimal at best.
Newport Glass Works, LTD. Grinding, Polishing and Figuring ...
Thin Telescope Mirrors . Abridged from an article appearing in Telescope Making #12 Provided: Courtesy of Astronomy Magazine Article's Author: Bob Kestner . Part I - Grinding . For many years, amateur astronomers and telescope makers thought it essential that glass for telescope primary mirrors be at least one-sixth as thick as its diameter.
Building a fixed post mirror grinding machine ...
Re: Building a fixed post mirror grinding machine. I I had a nice piece of 3/4" stainless dowel that was begging to be used. So I bought a cheap pillow block to provide the locator for the metal dowel, and then drilled the overarm to fit. These pillow blocks are $8 and come complete with a locking collar - great deal.