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  • Rough grinding the primary mirror for my 12" : telescopes

    Thin mirrors are hard to work with for a firsttimer. Ultralights are typically faster than f/5. Making a subf/5 primary as your first mirror is difficult I know because I basically did it (I abandoned a 6" f/8 halfway through polishing when I chipped it so my 6" f/4.5 was my first experience in figuring).

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  • Telescope Making Supplies willbell

    Throughout the grinding and final lapping stages, the objective has been to reduce pits and scratches to the smallest possible size. However, no amount of grinding can produce a surface smooth enough or sufficiently transparent to meet the needs of a firstclass telescope objective. Different techniques are

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  • Buy mirror blanks for telescope making

    Purchase telescope mirror blanks here. We provide 6 inch, 8 inch, 10 inch, and 12 inch telescope mirror blanks in standard 3/4" thickness, and larger mirror blanks up to 20 inches in 1" thickness. All of the mirror blanks we sell are individually tested to be free of internal strain.

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  • Grinding and Polishing of Primary Mirror Google Groups

    Grinding and Polishing of Primary Mirror Showing 15 of 5 messages. Grinding and Polishing of Primary Mirror: Rajat Sharma: 7/6/18 5:27 AM: Dear All, I am planning to grind and make 8'' Primary Mirror. Can any one tell me where i can find carborundum power to grind. I recently moved from Delhi and was unable to find any info on web.

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  • WTP: Hubble: The Primary Mirror

    The primary mirror of the Hubble telescope measures 2.4 m (8 ft) in diameter and weighs about 826 kg (1820 lbs). It is constructed of ultralow expansion silica glass and coated with a thin layer of pure aluminum to reflect visible light.

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  • 22" mirror grinding Reiner Vogel

    The mirror rested on a piece of carpet and a thick, flat board on a solid table. All the grinding (and polishing) was done tool on top (TOT). I used Carbo grades 180 and 320, Microgrit 15µ, 9µ, 5µ and 3µ (recommendation of Stathis). The tool was matched to the blank with Carbo 180.

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  • telescope mirror grinding machine christoartfair

    Mirror Grinding Machine. telescope mirror grinding machine based on Dennis Rech's M o M 20. Read More Large Synoptic Survey Telescope . The Large Synoptic Survey Telescope (LSST) is a wide field survey reflecting telescope with an 8.4 meter primary mirror, currently under construction, that will photograph the entire available sky every few

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  • Hubble Error: Time, Money and Millionths of an inch

    Hubble Error: Time, Money and Millionths of an inch . By Robert S. Capers and Eric Lipton . Executive Overview Space exploration has had some serious setbacks. One of the most often mentioned is the Hubble Space Telescope. The drama of that fiasco is a human and organizational tapestry perhaps more complex than the technology involved.

    Published in: Academy of Management Perspectives · 1993Authors: Robert S Capers · Eric LiptonAbout: Total quality managementChat Online
  • Grinding a Telescope Mirror: The NonDIY Project

    Apr 08, 2024 · If you watch this, or follow another guide on the Internet for grinding your primary mirror, it seems to be truly a daunting task. It is beyond hard work and effort and closer to a

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  • mirror grinding mashinee vrystaatboranklub

    telescope mirror grinding machine based on Dennis Rech's M o M 20 Read More Large Synoptic Survey Telescope The Large Synoptic Survey Telescope (LSST) is a wide field survey reflecting telescope with an 84 meter primary mirror, currently under construction, that will photograph the entire available sky every few nights .

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  • mirror grinding tool vrystaatboranklub

    Mirror Grinding Tool for a 22" f/40 Telescope Mirror, Feb 11, 2014· Gordon Waite describes the mirror grinding tool that he used to grind a pair of 22" f/40 mirrors for the Binoscope project The tool is made from dental plaster and ceramic tile

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  • Telescope Mirror Kits firsthanddiscovery

    Want to build your own telescope? Start with one of our telescope mirror kits. 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 specifiions.

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  • Stellafane ATM Main Page

    Much is also unchanged mirror grinding techniques are very similar to those written up by Porter and Ingalls in the 20´s and 30´s. Many amateur astronomers still choose to fabrie their own instruments, for the pride of accomplishment, the gaining of knowledge and the insurance of quality.

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  • Amazon: telescope mirrors

    Cassini Spherical Primary Telescope Mirror, Plate Glass w/ Quartz Overcoat, Mirror, 120mm PM120. by Cassini. $29.99 $ 29 99 + $6.99 shipping. Product Description Cassini Spherical Primary Telescope Mirror, Plate Glass w/ Quartz Titan Tools 11193 2" Telescoping Inspection Mirror.

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  • Grinding the primary mirror of the Hubble Space Telescope

    This is the mirror after the inner section has been polished (This mirror is actually two mirrors in a single piece of glass the inside has been polished,the outside still needs some work.) Mirrors like this get polished down to mere nanometers of variation, then get an aluminum coating on the front.

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  • telescope mirror grinding machine ascgu

    Grinding the primary mirror of the Hubble The machine that is used to setup up the somebody was grinding the mirror of the Hubble him that he helped make the mirror

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  • telescope mirror grinding machine christoartfair

    Mirror Grinding Machine. telescope mirror grinding machine based on Dennis Rech's M o M 20. Read More Large Synoptic Survey Telescope . The Large Synoptic Survey Telescope (LSST) is a wide field survey reflecting telescope with an 8.4 meter primary mirror, currently under construction, that will photograph the entire available sky every few

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  • Telescope Mirror eBay

    1PC D203F800 Primary mirror. Cleaning the mirror surface: first blow off the dust that can be blown off with a blown balloon, then use a good quality absorbent cotton to dip the alcohol and gently wip GSO 8" f/4 Parabolic Primary and 70mm Secondary Mirror Set for Telescope.

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  • Newport Glass Works, LTD. Grinding, Polishing and Figuring

    A solid tool traps abrasive in the center of the mirror and resists grinding the mirror spherical. When you first start a new and smaller abrasive, this shows up as a tendency to form a large bubble in the center, especially in the larger abrasives.

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  • Telescope Mirror Grinding Machines Crusher Mills, Cone

    Waite Research LLC Premium Newtonian Primary Mirrors. Fine Grinding a 20" Quartz Telescope Mirror. Rough Grinding on the FixedPost Mirror Grinding Machine. Hogging the Curve on a 20" f/4.5 Quartz Telescope Mirror

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  • Mirror grinding Telescope making

    The future, large mirror will also be something like F4.5 so this is a good way to practice parabolising. If you want to make a mirror that you will turn into your primary, visual use telescope, 1200 mm focal length would be recommended.

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  • Buy Telescope Mirrors Official Website for JMI

    Jim's Mobile, Inc. (JMI Telescopes) is a world renowned manufacturer of astronomical telescopes and aftermarket accessories for the amateur and professional astronomer. We manufacture telescopes and accessories such as telescope wheels, carrying cases, guiding computers, focusers, motors and motor controls and much more.

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  • Telescope Mirror Blanks / TelescopeMirrorBlanks.Com

    Please see the Buy Telescope Mirror Blanks page for low prices on plate glass mirror blanks. If you'd like to buy a complete mirror grinding KIT, with all abrasives and grinding tool included, please see the Buy Telescope Mirror Kits. website for the lowest prices on plate glass telescope mirror grinding

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  • Grinding with thin telescope mirror kits:

    When grinding thinner blanks, be conscious of downward pressure if excessive, it may bend the mirror blank out of shape. While this 'bending glass' effect is small, it makes proper support and regular turning of the work important. At later stages (fine grinding and polishing) you should see that the stroke forces are distributed evenly

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  • Sources for Parts home made telescope Building a Telescope

    A six inch 1/4 wave primary plate glass mirror from Island Eyepiece would have cost $136, plus around $25 for the secondary. As you can see, a bit cheaper than Peek'r Technologies, but Ken's mirror was 1/8 wave and, as I said, he was a very nice guy to deal with, which sold me.

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  • DOBSONIAN TELESCOPE OPTICS Webster Telescopes

    The other thing you get from the Webster Telescopes/Kennedy Optics team that you won't get anywhere else is (we saved the best for last): YOU GET THE VERY SAME SECONDARY MIRROR THAT WAS USED TO FIGURE YOUR PRIMARY MIRROR! That's right, the ENTIRE optical path is delivered to you just as it was during fabriion.

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  • tut44 Making A Mirror Grinding Tool PDF Free Download

    The heart of the Newtonian telescope is its primary mirror. Most Newtonian primary mirrors have either a spherical or a parabolic shaped concave face. Unlike most other mirrors in your home, the mirror coating of a Newtonian mirror is actually applied to the front face of the glass, not the back.

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  • Hercules Optics Primary Cellular Mirrors

    Standard mirror blanks From 8 inches to 24 inches. Newton type and RC type. Back and side machined. Top machined at your f/ ratio included for 13 inches

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  • MirroroMatic mirror making machine ATM pages of

    MirrorOMatic grinding machine. When I decided in 2009 after a tenyear 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.

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  • Fabriion and testing of 4.2m offaxis aspheric primary

    parabolic primary mirror with challenging specifiions of the surface quality including the surface figure, irregularity and BRDF. The mirror has been completed at the College of Optical Sciences in the University of Arizona and it meets every aspect of requirement with margin. In fact this mirror may be the smoothest large mirror ever made.

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  • Obsession Telescopes / Optics

    About our mirror suppliers. 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 12.5" to 25" aperture mirrors. Ostahowski Optics supplies Obsession with 15" to 22" aperture mirrors.

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  • Primary Mirror grinding Physics Forums

    Nov 23, 2009 · Short f mirrors are more difficult to figure, but a smaller mount is the difference between closet and viewing time. My first scope was a 6" f10. You needed a pack animal to set up and it quivered like a frightened butterfly in a faint breeze.

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  • draper mirror grinding machine africarhire

    draper grinding machine YouTube. Dec 12, 2006 This is a grinding machine for astronomical parabolic telescope mirrors. The machine can handle primary mirrors up to 80 cm/31.5" We are

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  • ore dressing mirror fine grinding machine

    How mirror is made material, manufacture, making, history, used If the metal backing on a mirror is scratched or thin in spots, the brightness of the Next, the blanks are put in optical grinding machines, which use abrasive

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  • spectrumcoatings

    Spectrum Coatings Telescope Mirror. Specially Formed 24" Telescope Mirror. Spectrum Coatings Telescope Mirror. Custom Optical Reflector. Spectrum Coatings Telescope Mirror. Huge, 24" full thickness ZeroDur Primary. Secondary Mirrors. Assorted Secondary Mirrors. Secondary Mirror for 20in, Primary. Large Secondary Mirror. Spectrum Coatings

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  • Swayze Optical! Home Page

    Grinding and polishing the mirror is the most difficult part of making a telescope. And the most critical. Mirrormaking is a hobby that has been around for many years, and many people have put their hands to the task, but it is time consuming, requiring a great deal of skill, patience and perseverence. Especially when the mirror gets big.

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  • HOMEBUILT TELESCOPES Mirror Grinding Testing And

    Telescope mirror Mirror Grinding Make your own telescope Homemade 12.5 inch Dobsonian Telescope by obsession telescopes / optics About our mirror suppliers. Obsession Telescopes feature primary mirrors made

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  • grinding an optical flat mirror Reiner Vogel

    Fine grinding. A flatness in the range of 1 µm can be reached by grinding three glass blanks alternatingly against each other, blank 1 on 2, 2 on 3, 3 on 1, and so on. This will be continued with each Carbo grade. After fine grinding, one of the blanks is picked as the future flat mirror

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