ATM Am I done yet?

[Mike Warne <warne@lava.net>]

A couple of days ago I started to figure my 10 inch to a parabola. (again..)

After the first session I was at about 1/2 wave.
So I did some work twice around the barrel and took 2 more readings.

Suddenly I am at ~ 1/6 wave PV.
Sixtests shows strehl of .94

I often here people talk about 1/8 wave being their target or goal.  I was 
surprised to see .94 strehl with a 1/6 wave pv.

So.. I am at the cross-roads now,  should I leave it as-is or work it a 
little more... I know it will be my decision in the end..

Here are 2 readings (sixtests file) taken at 2 different diameters..
( There was lots of air currents in the room, so I don't fully trust the 
numbers yet. I will be taking many more readings to double-check later).

----- #1 ---------
MikeAug16-02
251.5	52.07	Mirror, obstruction diameters (mm)
Foucault
0.0	Source distance (0=moving source)
y, mm	X, mm
    38.5  2654.656
    61.5  2654.96
    77.6  2655.392
    90.9  2655.875
   102.4  2656.408
   112.8  2656.697
   122.2  2656.713
*
-1.000	2648.495	Conic targets:  b, R (mm)
0.0733	Measurement std deviation, mm
0.0	Longitudinal reading bias, mm

----- # 2 ------
MikeAug16-02
251.5	52.07	Mirror, obstruction diameters (mm)
Foucault
0.0	Source distance (0=moving source)
y, mm	X, mm
    38.5  2654.529
    61.5  2654.605
    77.6  2654.96
    90.9  2655.545
   102.4  2656.078
   112.8  2656.408
   122.2  2656.535
*
-1.000	2648.495	Conic targets:  b, R (mm)
0.0733	Measurement std deviation, mm
0.0	Longitudinal reading bias, mm

Mike Warne