Re: [ATM] Wedge: How much is too much?

["lance clarke" <alaskawolfjoe@hotmail.com>]

BVC is not homogeneous (at least not when Andre was making it), it is 
comprised of multiple layers of glass fused together during the 
"devitrification" process.  I wouldn't think it is good at all for a flex 
mirror.
-Lance


>From: "Bill Kelley" <flex@commspeed.net>
>To: "John Sherman" <atmer@johnspics.com>,<atm@atmlist.net>
>Subject: Re: [ATM] Wedge: How much is too much?
>Date: Thu, 7 Jun 2007 20:51:12 -0700
>
>
>----- Original Message -----
>From: "John Sherman" <atmer@johnspics.com>
>To: <atm@atmlist.net>
>Sent: Saturday, June 02, 2007 11:52 AM
>Subject: Re: [ATM] Wedge: How much is too much?
>
>
> >
> > Hi Douglas,
> >
> >
> >>  My question is about wedge--specifically,
> >> how much wedge is acceptable in a blank of this size?
> >
> > I'm pretty sure you don't have to worry about the wedge, as it will be
> > compensated when you turn the collimation screws on the scope. Unless 
>you
> > plan to flex the mirror, in which case, BVC is most probably the wrong
> > material to be using.
> >
> > Enjoy!
> >
> > John
>
>BVC should work nicely in a flexed mirror, and of course, wedge should be
>minimized
>Any homogeneous material that will support an optical surface should be
>suitable for a flexed mirror.
>Bill Kelley
>
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