Re: ATM Cerium Oxide Vs Zirconium Oxide

[Bill Marriott <btk@pacbell.net>]

"Myers, Alan" wrote:
> 
>  I have a question, I am near the end of my figuring my first mirror, an 8"
> f/6.7. I am nearly out of polish and am going to order more. The question
> that I have is, since I am quite close, should I order more Ceo, or switch
> to Zirconium?
> 
>  Thanks as always,
> 
> Alan Myers

Alan;

I've never been a big fan of Zirconium oxide, though some people seem to
get good results using it.

My reccomendation is to get some good quality CeO, mix with water up to
a fairly thin consistancy, let it sit for 15 min, pour off the liquid,
which you will use as your finishing compound, in conjuction with slow
smooth strokes as you finish figuring your mirror.

Bill
--
Bill Marriott
http://www.starlightoptical.com
telescope/optical stuff