Re: [ATM] 12.5 inches BVC advice for parabolizing

["Mel Bartels" <mbartels@bbastrodesigns.com>]

> Suiter did not say there was no difference between
> those images.  He said that there was no difference
> between a PERFECT mirror and a 1/2 wave undercorrected
> mirror at close to the same positions from COC.

Right, and I am stating that I see significant differences for these two 
cases.  Look at the edge Ronchi banding, particularly their placement in 
regards to the furthest edge zones.  Not even close!  I even might go so far 
as to submit that if people are as careless in their Foucault measurements 
that they would mess that test up too.

Mel Bartels 

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