From: "CSC" 
To: "Atm" 
Reply-To: "CSC" 


John:

Yes, the Yolo is about perfect on axis, and the Schief does have a strange
unsymmetrical abberation pattern.
If you expand the field diameter on the Yolo you'll see that unsymmetrical
aspect of typical TCT's show up too at the edge, but it's not visible at
that low a magnification.

Colin


>Hi Colin,



Thanks for sending me those files. Looking at them has taught me more about
using OSLO off-axis than I was able to learn from the help file. I think
now I can figure out how to do what I was trying to do.

Looking at the designs is also interesting. The Yolo looks to be the better
of the two, but it is unusual how the Kutter has a better image off-axis
than on-axis.


John<

--- BBBS/NT v4.00 MP