From: "Thomas Janstrom" 
To: "atm" 
Reply-To: "Thomas Janstrom" 


Ok I now have my DK secondary ready to test, at a first glance (no wedges
used) I get about 26 fringes neatly centered. With wedges I get arcs, and I
mean lots of them, far too many to count. I have tried several wedging
options, some with as small a difference as 2.5microns, the largest was
0.1mm, in both cases there were more fringes than you would want to have to
count.

What should I do to bring the fringe numbers down (this question is only
RE: using an air wedge) Tex suggests a shallow wedge, but I tried that....

Secondly what is the recommended polishing technique to steepen a convex curve?
Clear skies, Thomas
http://www.tjanstrom.com
"Don't make me set the laser printer to stun"

--- BBBS/NT v4.00 MP