From: J-Engineering 
To: Eric Royer 
CC: Atm{at}shore.net
Reply-To: J-Engineering 


Eric and Group,

Did you parabolize one at at time, or try to do equal figuring to each,
then test both.
If I need to go back to a sphere, is pressing on one, then using it on the
other a bad idea?  The intent would be to match focal lengths.

Am I making too big a deal out if this since 2% variation is considered acceptable?

Ray

Eric Royer wrote:

> Hello,
>
> > I'll soon be parabolizing for the first time.  For my first project, I
> > picked 8" binos. Twin f/6.3 Newts
> Great !
>
> > Any tips on how not to change the focal length too much?
>
> I didn't bother with that when making my 6" f/8 binos.

Snip..

> Eric

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