Re: Are Aluminum Mirrors in reach of the ATMs?

[Del Stanton <sd20@earthlink.net>]

About 35 years ago, while working at Carson Astronomical
Instruments
we made, on contract, an all aluminum newtonian reflector. 
We farmed 
out the mirror to a sub-contractor. I recall they it was
aluminized 
and overcoated with Silicon Dioxide.

Del Stanton   sd20@earthlink.net

Malcolm wrote:
> 
> Hi Everyone,
> 
> Is there anyone out there thinking about making an all Aluminum mirror?
> 
> I'm just a little confused if you would or could (how) parabolize.
> 
> My first thought would be that its almost identical to using glass, but the
> final figuring would be a little more involved
> 
> Regards