Testing the Polish on a 20-inch F3.0 Telescope Mirror with a Laser

Gordon Waite turns down the lights in the polishing shop, and shows you how to see if your telescope mirror is polishing properly. Using a laser pointer, Gordon shows you what to look for to determine if the mirror is polishing evenly. He also gives pointers for adjusting the fixed-post polishing machine to correct any problems.

[@tonisee2]

Wow, that is ingenious! :-) So trivial that one usually won't figure that out on his own.

[@kg1016]

Thanks Gordon. Very informative. Will you soon coat the mirror with a reflective surface. I want to see how that process is done.

[@GordonWaite]

kg1016 Hi! I'll check with our coater and see if we can make a video to show the coating process.

[@ranjithkallara]

@@GordonWaite thats so nice of u

[@tomellsworth2726]

Great Videos I am watching them all can you please tell me where to purchase the pyrex glass blanks I have been searching everywhere and no luck thanks

[@GordonWaite]

tom ellsworth In the USA, you can buy borosilicate blanks from Newport Glass in CA. For plain plate glass blanks, I use Swift Glass in NY.

[@Oganes03]

Хорошее видео!

[@GordonWaite]

Thanks!