Re: [ATM] Cerium Oxide

[Ken Lowther <hermit@outofoptions.org>]

Quoting Geoff Nelson <gjnza@absamail.co.za>:

> Hi
>
> I have been given a new sample of Cerium Oxide (CeO) that is off
> white. The CeO I have been using up until now is dull pink. The the
> off white material in other aspects seems very similar.Can anyone
> comment on the potential quality for optical work. I am most likely
> going to use it anyway  as it is a lot cheaper than the current
> stuff, but I would like some idea of it's potential as I may keep the
> current stuff for figuring if it is a superior product.

Well, there are many grades of CeO available.  Is there any names on it?

> This is for a
> group of now eight guys, we were four at the beginning of the year.
> Telescope making is growing in South Africa.
>

We will take this as GOOD news. ;-)

Ken

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