Bob
):-{])) <---- madden@netcom.com madden@svpal.org Remember amateur astronomers: "keep looking for the next Universe"
On Tue, 2 May 1995, Bratislav Curcic wrote:
>
> Read a "Bible" again. Texerau gives a good example of making a flat
> by testing it against a spherical mirror (Common test ?). I think that
> the same/similar method is described in Advanced Telescope Making
> Tecniques. If memory serves, there is a sizeable chapter by Strong in
> ATM II or III about making flats as well.
>
> Bratislav
>