Re: [ATM] Two mirrors small size difference

[Mark Holm <mdholm@telerama.com>]

Paul Bradley wrote:

> I'm going to grind more and worry less anyway
Good plan!

>, but confirmation that this is likely to work ok would
> be nice.
Using the same tool on both mirror blanks pretty much guarantees they
will both have the same curvature.  A small diameter difference really
doesn't enter into the picture.  Don't worry about masking the larger
one off either unless it happens to end up with a bit of turned edge.
You won't notice the very slightly brighter images or the very slightly
worse coma and astigmatism  on the lower f-number side.

Mark Holm
mdholm@telerama.com


_______________________________________________
ATM mailing list http://www.atmlist.net/