Telescope Mirror Grinding Machine | Crusher Mills, Cone ...
Thin Telescope Mirrors . … I can buy it easily and get all the starting work done on diamond-grinding machines – something most of you don't have access to. Mirror grinding machine – Hack a Day. ... Telescope mirror grinding machine Mirror making and optical testing … The images below show the completed grinding machine in it's new ...
Telescope Making Links - Designs and Techniques | STAR ...
Grinding Your Telescope Mirror Polishing Your Telescope Mirror Glass Notes Grit and Microgrit Grading Conversion Chart at READE Making a tile on plaster tool Berthold Hamburger's Tile Tool Page (mirror) Grinding with Washers Grinding Large Thin Mirrors Part I Grinding,Polishing and Figuring Large Thin Mirrors - Part 2 - Polishing Astronomy ...
24" F/6 thin telescope mirror grinding 3/4" plate - ATM ...
Page 1 of 2 - 24 F/6 thin telescope mirror grinding 3/4 plate - posted in ATM, Optics and DIY Forum: A friend and I have decided to grind this as a fun yet challenging project. I have ground and polished several mirrors including a 6, 8.5, 9.2, and 14.7 quartz mirror. I have decided to take the next step with this ultra-thin setup. I know it is bordering on the edge of extremely thin with a 32 ...
Thin Telescope Mirror Grinding Advice
Thin Telescope Mirrors and Mirror Making There is a wealth of great information on the internet regarding the benefits of thin mirrors, and techniques for grinding thin mirror blanks. Here is one such website created by someone with much experience the realm of creating fine homemade telescopes using thin (and ultra-thin!) mirror blanks...
Grinding an 8″ F/10 Telescope Mirror – gordtulloch
Grinding an 8″ F/10 Telescope Mirror. For this project (my first time ever grinding a mirror) I ordered an 8″ Black Vitrified Ceramic (BVC) blank without a pregenerated curve from ASM Products in Ste-Basile PQ. Ordering from Canada is always cheaper once you factor in all the taxes – all told the kit cost about $185.
TELESCOPE MIRROR MAKING HOW TO PART 1: Rough Grinding ...
Welcome to my channel - in this video, we will begin to make a telescope mirror from scratch! I'll be showing you the basics of telescope mirror grinding!Her...
Parabolic telescope mirrors - R.F. Royce
My mirrors are made to the following design and use specifications. Wavefront accuracy having an RMS of .032 and a Strehl Ratio of .96 or better at 633 nm for apertures up to 10" at f/5 or larger.Mirrors up to 16" and f/5 or larger have a wavefront accuracy having an RMS of .036 and a Strehl Ratio of .94.. Mirrors at f/4.5 and lower ratios have correspondingly lower Strehls due to the ...
Mirror-o-Matic mirror making machine - ATM pages of ...
Mirror-O-Matic grinding machine. When I decided in 2009 after a ten-year break to get into mirror making again, it quickly became clear to me that I would need to construct machine, as hand grinding big mirrors is not something very beneficial for the hands of a musician.
Grinding a 25-Inch F3 Telescope Mirror: Thinning and ...
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...
24" F/6 thin telescope mirror grinding 3/4" plate - Page 2 ...
Page 2 of 2 - 24 F/6 thin telescope mirror grinding 3/4 plate - posted in ATM, Optics and DIY Forum: Are there plans/parts list available for this setup?
Explore how telescope mirrors are made | Astronomy
Making a telescope mirror. To start, a new mirror blank is "sanded" down to create a precise parabolic curve in a process called grinding. To do that, the blank is …
Parabolizing a Telescope Mirror - BBAstroDesigns
I developed my process while working on large thin mirrors in the 1980's and on my recent 13 inch [34cm] f3.0, 6 inch [15cm] F2.8, 10.5 inch [27cm] F2.7 and 25.1 inch [637cm] F2.6 mirrors. I read comments like, "thin mirrors cause astigmatism", "the thermal effects of plate glass make figuring difficult". Neither is true because process matters.
Joy of Mirror Making: Rough Grinding - BBAstroDesigns
The center will deepen during the first stage of fine grinding as contact is achieved across the mirror face and fine grinding tool. On larger mirrors, the ring tool may leave the zones part way to the edge a little underground. For these mirrors, as you near the depth, you can alter the strokes to be off-center.
tut44 Making A Mirror Grinding Tool - Asterism
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:
Lamination of ultra-thin s ilicon wafers for producing ...
We present a thin wafer lamination method for producing X-ray telescope mirrors aiming at 1-10 optics quality and low fabrication cost. Traditional grinding/polishing and hot slumping methods find difficulty to meet the required figure accuracy when the mirror thickness is below 1 mm.
Large Thin Mirror Making - BBAstroDesigns
A large thin mirror dobsonian can be made for a very reasonable cost and is transportable to dark skies. There is a reason why long lines form behind these scopes at star parties - the views are incredible! Gazing at incredibly distant galaxies using a mirror that you have ground yourself is immensely satisfying and joyful. In addition, a great ...
How to Build an 80-Foot-Wide Telescope Mirror to See Deep ...
Two of the ELTs, the European ELT and the Thirty Meter Telescope, have adopted the approach pioneered by the 10-meter Keck Observatory telescopes in Hawaii—they'll make a …
Stellafane ATM: Grits, Polish & Pitch
Mel Bartels, a well respected west coast amateur, recommends on his Large, Thin Mirror Grinding web page starting with something between 30 and 60 grit, and then 120, 220, 500 (=25 micron) and finishing with 9 micron. This is just a 5 grit sequence, as opposed to 8 to 10 for the more traditional sequences usually recommended for novices.
Fine Grinding a 20" Quartz Telescope Mirror - YouTube
Gordon Waite shows some steps during fine grinding of the 20" mirror. As the grind progresses through the grades of abrasives, see the technique Gordon uses...
Telescope Mirror Blanks Manufacturer and Supplier ...
22" - 2.000". Telescope Mirror Blanks Made to Your Specifications. If one of our standard telescope mirror blanks isn't exactly what you're looking for, Advanced Glass can custom make a telescope mirror blank to your specifications. AGI can manufacture mirror blanks up to 40" in diameter. AGI can diamond machine ID holes into your mirror ...
Waite Research :: Quartz Mirror 18" F3.6
Quartz Mirror 18" F3.6. Grinding and polishing a n 18" quartz substrate. Quartz is a wonderful material for making telescope mirrors. The thermal performance of quartz offer minimal wait time before observing sessions can begin. That same property helps me as a mirror maker in that I don't need to let the mirror aclimate as long ...
Making two matching 30 inch [0.76m] F2.7 telescope mirrors
The 13.2 inch meniscus acts like standard flat-back mirrors (as does the 20.5 inch x 2 inch thick Pyrex mirror), but the 25 inch is definitely floppy: I saw that during fine grinding as the blank flexed and scratched at 9 micron aluminum oxide, necessitating a return to 25 micron AlO2.
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.
Optical Testing of Parabolic Mirrors : 9 Steps (with ...
A mirror mount is needed to hold the mirror during testing. If the mirror is a 'thin' mirror (i.e. the thickness is much less than 1/8th its diameter) then the mount must hold the mirror without deforming it. The weight of the glass can deform a thin mirror. In my case, I was making a full-thickness mirror, which is a mirror whose thickness is 1/8th the diameter or more, so mirror deformation ...
spin grinding a slumped mirror - ATM, Optics and DIY Forum ...
spin grinding a slumped mirror - posted in ATM, Optics and DIY Forum: so after taking a few years off from the hobby to get my wife well i have completed my spin grinder and am ready to tackle the 14 honeycombed mirror that you see as my avatar i had it fused to shape many years ago and it is slumped to an F5 curve. i have not used a spin grinder as yet all my work has been done by hand or ...
Telescope Mirror Kits - Firsthand Discovery
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. Please note that our kits do not include a grinding tool or pitch lap. If you need materials for making a grinding tool or pitch lap, we have ...
TELESCOPE MIRROR MAKING HOW TO: Fine Grinding - …
In this video I am showing you how to make a DIY telescope mirror! This is the second part in the series, showing fine grinding in a step by step tutorial.
DEVELOPMENT OF AN ACTIVE OPTICS CONCEPT USING A …
Mechanical Interactions of Thin Mirror ..... 76 Final Grinding to Reduce Mirror Thickness ..... 77 Scatterplate Interferogram of Mirror Before Thickness ... or figure, of a telescope primary mirror, com- puting the necessary electronics control signals, and physically aligning the rnlrror ...
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, I'd been collecting motors, gear boxes, pulleys, etc. Most of them came from industrial junk yards.
(PDF) Study of thin telescopic mirror fabrication and ...
In conventional telescope mirror grinding standards it is required to maintain thickness to diameter ratio greater than 1/6. Mirrors with the ratio less than 1/6 are considered as thin mirrors.