Re: New AP scope and more

From: David (moravianus1_at_yahoo.com)
Date: 10/31/04 

Date: 30 Oct 2004 20:39:34 -0700

chris1011@aol.com (Chris1011) wrote in message news:<20041029132017.08241.00002766@mb-m10.aol.com>...
...
>
> To make high quality glass requires high melt temperatures for an extended
> period of time. For simple lenses as used in magnifiers and cheap camera
> lenses, a quick anneal is fine. For astronomical lenses, an extended anneal is
> required to eliminate internal strain. Fine annealing takes up to a week or
> more in a high temperature oven, fired by either gas, or more expensive
> electricity.
>

Could you save doing annealing in-house en masse with perfect thermal
isolation?
Zambuto does this for his mirrors..
Buy cheaper striated blanks and re-do them in your factory addition,
voila, we have a $2k lens.