[ATM] mirror cells and parabola...

[Norm Prince]

The twelve inch project is moving right along...have tool.. will
grind..Horace has been handy to exchange ideas with on tile tools...(tips
hat).

But thats not why i'm typing.  I'm trying to think ahead a bit, and it
occurs to me that i might need a pretty fancy cell involving some fancy math
for what i'm seeing as a pretty darn thin chunk of what appears to be a
pretty soft chunk of glass.  I've dug thru the archives some, but that is so
tedious, and would be time better spent doodling up some sketches, or even 
grinding for that matter.  If anyone would be so kind as to throw a dog a
bone as to how/where to dig up some more fundamental info on this subject i 
would be eternally greatful.

I've been thinking about figuring too, and running some numbers...it seems
to me that parabolizing an f/5 doesn't really buy me much.  Well at least as
far as my eyeball is the limiting factor in the system.  The difference
seems so miniscule that my eye wouldn't know the difference, tho i could be
doing the math wrong as far as the Raleigh standard is concerned....  Does
the correction help in other ways??? chromatically...etc.?

-norm prince-
Georgia, USA (land of bad seeing)