[ATM] 8" F/4.2... Really Done!

[Jason Hissong <jhissong@gmail.com>]

I did some more figuring, and after average 4 readings, it says I have:
P-V Wavefront - 1/9.58
Strehl: 0.98
Surface RMS: 6.2
Max RTA is 1

However, the first two readings showed 1/9.39 and 1/6.8.  The last two 
readings show 1/7.5 and 1/7.55.  So I averaged the last two and get:
1/7.5 Wavefront P-V
Strehl .974
Surface RMS 7.1
Max RTA is 1.3, but adjusting it gets me to MaxRTA of 1.
http://www.undermidnight.com/images/atm/12062005_figureXP_final.jpg

I think I will go with the last average reading to be conservative.  I 
think my little F4.2 will make a nice general purpose, DSO and variable 
star observing scope.

I wanted to thank the list and those individuals who provided guidance 
with getting this mirror completed.  And behold.. it is suppose to be 
clear tonight!  Guess who will be star testing?

Thanks again guys.. my 14" F5.5 awaits! (finishing up 220)

Jason Hissong

-- 

"A long journey starts with the first step and an understanding spouse."
http://www.undermidnight.com - astronomy and astrophotography
http://www.n8xe.com - ham radio
http://www.jasonhissong.com - electronic music composition

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