How to grind a telescope mirror by hand

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August undefined, 2024

Web11 mrt. 2024 · Steps for Telescope Mirror Coating. Step 1: Strip the old coating. Step 2: Prepare the praying chemical mixture. Step 3: Clean the mirror. Step 4: Sensitize the mirror surface. Step 5: Spray the mirror surface with the silvering mixture. Step 6: Apply anti-tarnish coating and let dry. Web19 mei 2024 · Speculum is a alloy of copper an tin that could be polished to a high mirrored surface. Its what telescopes at the time were made of. Step 2: Make a spherical mirror. This was hand ground and done the same way we do it today with ceramic chips imbedded in a blank, and a lot of hand grinding. Step 3: Make it parabolic.

Stellafane ATM:Mirror Making Myths

Web27 aug. 2012 · The natural mirror grinding process will create a sphere. The first part of making a mirror is to grind and polish to a sphere of the required focal length. Then the mirror is parabolised, by using special polishing strokes, that changes the figure from sphere to paraboloid. WebAs we explain in our mirror making demonstrations at the Stellafane Convention, the basic mirror making process involves grinding the mirror blank into a sphere with desired … hcl is this an acid or a base

Grinding own mirror gives you a spherical or a parabolic curve?

http://www.newportglass.com/grind1.htm Web10 mrt. 2010 · 275 60K views 13 years ago Gordon Waite shows some steps during fine grinding of the 20" mirror. As the grind progresses through the grades of abrasives, … Web17 apr. 2015 · And this, only by pushing a piece of glass by hand. Let’s break down the process into 5 steps. Rough grinding This step is about making one side of the glass … hcl is weak or strong acid

10 Inch Telescope Mirror Kit - Firsthand Discovery

Explore how telescope mirrors are made Astronomy.com

Web30 mei 2014 · This is how you make a telescope mirror out of a hunk of glass: Use a sand mixture and another piece of glass to grind away the middle of a concave shape. Repeat with finer and finer grit sand. Dave Barosso demonstrates the technique, but to do it yourself, try to visit one of the Telescope Makers Workshop ‘s classes on Friday nights … WebYou can put in your mirror diameters for the one we'll be making (primary mirror) and the secondary mirror, as well as the focal length of the primary mirror, and it will … hcl is what type of acidWeb30 mei 2014 · This is how you make a telescope mirror out of a hunk of glass: Use a sand mixture and another piece of glass to grind away the middle of a concave shape. … hcl is what type of company

"WebSave money and time by purchasing a telescope mirror kit. This kit includes an 10 inch telescope mirror blank, all the silicon carbide grits, white aluminum oxide powders, gugolz pitch, and cerium oxide polish you will need to grind and polish an 10 inch telescope mirror all bundled in one spot. This will get you on a great start to building your own telescope. " - How to grind a telescope mirror by hand

How to grind a telescope mirror by hand

Looking at the mirror: the craftsmanship of reflecting telescopes

WebHow to grind a mirror BBC Sky at Night Magazine 21.2K subscribers 48K views 14 years ago BBC Sky at Night Magazine presents "How to Grind a Mirror". This is an … WebWant 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 …

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Web3 apr. 2024 · 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!Here I begin to rough grind the mirror! We... Web29 okt. 2007 · The testing is a large part of the quality of a mirror produced... the two testers used here enable you to directly see the figure of the parabolized mirror, which is much …

WebFor large thin mirrors, say 12 inches [30cm] or greater and 1.5 inches [4cm] or thinner, the mirror back must be ground flat, or at least regular in shape before beginning fine grinding the mirror's face. Cast a tool specifically … Web1 Answer. Large telescope mirrors are made by spinning a disc of molten glass so its surface assumes a parabolic shape, and then slowly cooling it while spinning so it retains that shape after it solidifies. Mirror blanks up to ten meters in diameter are routinely cast this way. After the mirror blank is finished, it is placed under a four-axis ...

Web3 mrt. 2024 · Homemade vs. mass-produced mirror quality - posted in ATM, Optics and DIY Forum: Not that Im going to get into grinding my own mirror anytime soon, but Im curious about the relative quality of the average homemade mirror. If I were to get everything necessary to grind my first mirror (lets say 8 f/5, which should be doable as … WebTELESCOPE MIRROR MAKING HOW TO PART 1: Rough Grinding Australian Astronomy with Logan Nicholson 20K views 2 years ago Amateur Telescope Making Arvind …

Web2 mrt. 2016 · I know it's practical to hand grind a convex spherical mirror and that it's practical to make a concave parabolic mirror from a spherical one. But as I …

Webgrinding A flatness in the range of 1 µm can be reached by grinding three glass blanks This will be continued with each Carbo grade. grinding, one of the blanks is picked as … hcl is weak acidWebFirst, astigmatism in the mirror will not completely grind out because the tool will conform to the astigmatic contour. Second, the weight of your hands on the back of the tool will force the center of the tool to grind harder on the center of the mirror, generating a curve deeper (i.e., more parabolic) than spherical curve. gold color closet rodsWeb19 dec. 2014 · Fine Grinding a 10" F2 Telescope Mirror by Hand 19,683 views Dec 19, 2014 150 Dislike Share Save GordonWaite 13.1K subscribers Showing grinding work … gold color cmyk illustratorWeb30 sep. 2015 · Theory 1 is that the shape that you get when grinding a mirror stems from the probability distribution of where the grinding tool is working based on its size and movement. So assuming an infinitely small tool, and a sinusoidal motion along one spatial axis, you would have a probability distribution that is roughly a bell curve. gold color code hex codeWebFor telescope mirrors, the parabola that's needed is basically a circle that's deeper in the center, and more shallow towards the edge. So, if you start with a spherical mirror (circular section) and use polishing strokes that tend to deepen the center in a gradual way, you can get pretty close to a parabola. This is known as a "parabolizing ... gold color cocktailsWebWant 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 … hcl is whatWeb19 nov. 2016 · Find a large computer screen or LCD TV, put on a white image on the screen and, using a polarizing camera filter, or polarized sun glasses look at the computer screen through the glass and rotate the … hcl is what kind of acid