27/09/2022 · Mirror grinding machine September 27 2022 General By Mark VandeWettering Courtesy of Hack A Day here s a pointer to all sorts of telescope making stuff including a nifty mirror grinding machine I ve got a dual spindle Elgin style machine in my garage that I must admit to my embarrassment that I ve never actually used
GRINDING AND POLISHING MACHINES TIlE grinding and polishing machines used by the writer are somewhat similar in principle to Dr Draper s machine in Fig 25 of his book but are more elaborate I shall describe here the machine used in making the 5·foot mirror both because it embodies most of the essential features of a grindingand
25/12/2022 · 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
04/04/1994 · Telescope Mirror Grinding Machines Mc World Grinding Machine for Large Telescope Mirrors Grinding Machine for Large Telescope Mirrors I designed and built a grinding machine for mirrors up to 42 inches in diameter By slipping on and off a couple of belts the machine can quickly be reconfigured for spinning work or for stroking work
Gordon Waite sets up his fixed post mirror grinding machine to begin rough grinding on an 11 f/ telescope mirror He uses a grinding tool made from dental plaster and steel pieces to speed up grinding Gordon shows the setup for spin grinding at high speeds and with added weights to get the job done as fast as possible
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
A telescope mirror requires an extreme surface precision will see that this quality is most of the time best achieved by hand rather than machine polishing Mark the larger holes with a Sharpie and continue grinding until those are gone
Telescope Mirror Grinding Machine For Sale Clay crusher cheap stone crushing machine for sale telescope mirror grinding machines mirror grinding machine construction log more us2779137a mirror grinding machine google patents prior art keywords frame figure tools discs over prior art date 19540921 legal status the legal status is an assumption
Grinding Machine for Large Telescope Mirrors Grinding machine for mirrors up to 42 inches in diameter Can be configured for spin or stroke work Grinding Machine for Large Telescope Mirrors I designed and built a grinding machine for mirrors up to 42 inches in diameter By slipping on and off a couple of belts the machine can quickly be reconfigured for
Buy A Mirror Grinding Machine a Spark Plug Telescope Mount Lab Techniques A Mirror Grinding Machine a Spark Plug Telescope Mount THE SIXTH Annual Convention of amateur telescope enthusiasts will be held at Stellafane near Springfield southeastern
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Mirror grinding machine construction logget to far and put it aside for a while as I built several med sized dobsonian telescopes A 15 for myself and a 16 for the NBANB Both of these mirrors were bought but I still wanted to grind one myself I ordered an 8 kit from Willman Bell but it has sat on the shelf for
06/06/2022 · I started this thread to record my building progress of a new mirror grinding and polishing machine This machine will be capable of handling mirror sizes up to 22 I have decided that 22 is the absolute maximum otherwise becomes too cumbersome to move around I have won 2 x 1/3 horse power single phase electric motors on eBay at $45 each
Telescope Mirror Blanks Providing telescope mirror blanks and kits to telescope makers Mirror blanks are individually tested for internal strain Plastic protractor inserted under a 6 inch mirror blank during a stress test to illustrate what stress would look like
Telespe Mirror Grinding Machine Techniker Leipzig George willis ritchey built this mirror grinding machine at the yerkes observatory in williams bay wisconsin in the late the sponsorship of george ellery hale the machine was used to grind a series of telescope mirrors starting with a 24 inch and then a 60 inch mirror for a telescope initially intended for
Grinding Machine for Large Telescope Mirrors Grinding machine for mirrors up to 42 inches [] in diameter Can be configured for spin or stroke work Ccrespo C Ccrespo 5 followers
telescope mirror grinding machines MC World Grinding Machine for Large Telescope Mirrors Grinding Machine for Large Telescope Mirrors I designed and built a grinding machine for mirrors up to 42 inches [11m] in diameter By slipping on and off a couple of belts the machine can quickly be reconfigured for spinning work or for stroking work More
Telescope Mirror Grinding Machine Pgranite In India Telescope mirror grinding machine plans mirror grinding machine price in grinding mirror grinding machine based on dennis rechs m o m 20 the two axis u joints you see are made of a soft 2x2 pine which costs about 180 for 8 feet a 38 hole and a 38
16 03 2022 · grinding machine It is hardly worthy the name of machine Basically it is only a ro tating vertical spindle with an iron plate on top for holding the mirror The bear ings under the plate are old automobile ball bearings These bearings are strong and steady and although they support the weight of the rotating mirror there is no
After experimenting with copper and tin alloys for the metal reflecting surface and developing his own steam driven mirror grinding machine this telescope was completed in 1839 CERAMIC ABSTRACTS Mirror grinding machine FRANKT Optical measurements of reflectance and absorptance of metals
Currently manufacturing a 16″ diameter 1″ thick plate glass Newtonian telescope mirror Doing this with my new fixed post grinding machine built this summer Work is progressing well and very efficient Started project in August 2022 and at this point I am ready to move on from 25 micron White Aluminum Oxide to 9 micon White Aluminum
27 01 2022 · The master craftsman Roger Angel who has been making telescope mirrors for 30 years or its the technicians arranging—arranging not simply throwing into the mold—chunks of glass pictured above or those grinding and polishing the mirror success depends on just knowing when you ve done it right Or as Angel says Not only is it devilishly hard to grind
The IAU named asteroid 17823 Bartels discovered 1998 by JMRoe in recognition for my contributions to amateur astronomy Making is the Key to Knowing A telescope mirror is arguably the most accurate surface made by human or machine Amazingly you can grind a mirror by hand and make a telescope with simple hand tools
Grinding Machine for Large Telescope Mirrors I designed and built a grinding machine for mirrors up to 42 inches 11m in diameter By slipping on and off a couple of belts the machine can quickly be reconfigured for spinning work or for stroking work The machine can also work smaller mirrors if the drip pan Get price
Plans to build an Automatic Power Grinder for Telescope Mirrors The machine easily adjusts for grinding and polishing 6 8 10 and 12 inch mirrors It automatically carries out the three correlated movements of hand grinding the back and forth motion the slight turn of the upper disk at the end of each stroke and the short step around the barrel of pedestal every few
Obsession Telescopes feature primary mirrors made by two of the best established and most reputable optical companies serving the astronomy community today Optical Mechanics Inc OMI supplies Obsession with to 25 aperture mirrors Ostahowski Optics supplies Obsession with 15 to 22 aperture mirrors Ostahowski Optics is well known as
05/10/2022 · Brought back memorys of being 17yrs old and hand polishing a 6 mirror for a friend took nearly a year before it was finished he later made a Dob with it and i later had the chance to view with the telescope Wonderfull observing deep sky objects i remember seeing M81 for the first time with that scope/mirror Wax on Wax off as they say James
Half Automatically Rolls Machine Lens thickness ranging from 20mm The outside diameter of lens ranging from 150mm need to change the ortside diameter of diamond grindstone lens thickness can clip 15 top 25 lenses without rsing adhesive Standard deviation of the outside diameter of lens is
22/11/2022 · 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
Make life easy with state of the art motion control components and positioning systems And never sacrifice quality by using the PRO Series or eSX 5 Axis CNC lens grinding platform that s right for you Spheres aspheres cylinders prisms and freeforms Glass ceramics and hardened steels Lens sizes from 5 500 mm