ATM Interferometry analysis of 25"

[Ak55c@aol.com]

Hi all,

I have just received an interferometry analysis of a 25" galaxy mirror
I purchased second hand at Stellefane.  The mirror was made by
John Hudek back in 1990 or so when he did not have the interferometer.
I purchased the mirror for $2200 because it had a small pea size chip
on the edge.  John just sent it back to me after dressing the chip, recoating 
and doing an analysis.  Unfortunately I am not optically inclined and do
not understand how to interpret the results.  Can anyone please tell me
if this is just an average mirror??? Is it better than average???
Any comments would be sincerely appreciated.

Here are the results:

Residual wavefront variations evaluated at fringe centers (in waves)
Number of pts    566
Peak    0.172
Valley      -0.170
P-V     0.342
RMS     0.046
Strehl Ratio    0.921

Residual wavefront variations over uniform grid (in waves)
Number of pts    2774
Peak    0.146
Valley      -0.163
P-V     0.309
RMS     0.044
Strehl Ratio    0.927

Thank you to all who respond,
Scott S.