[ATM] 20" F4.5 Done

["Geogre Nikolidakis" <geoniko@otenet.gr>]

Hi all
Finally I finished the construction of my telescope. 
A 20" with F4.5 Primary Mirror from the Pegasus Optics 
and a 4" secondary from the Antares Optics. 
It took me 4 months with very afternoon and evening job,

too running for materials and highly improvisational ... 
Details of the construction finished and standing, you can see 

http://geonik.homeip.net/home/complete/tabid/106/Default.aspx

I received measurement data from John Hall director of Pegasus optics,

Listed below.
There seems a Wavefront PV Error 1/19.71 Wave 
but below there is a Worst Case P-V Error 1/9.93 Wave 
What I finally can not understand is what is my mirror Wavefront error? 

I bet that there is 1/9.93 Wave, but the 1/19.71 is confusing me.
Can someone explain that to me?

 

 

Primary mirror measurement data

Strehl Ratio   0.986 .

Wavefront P-V Error 1/19.71 Wave, Indicated error, uncorrected for effect of
random variables.

Wavefront RMS 1/53.3 Wave   Indicated Root-Mean-Square Error

 

Worst Case  Strehl Ratio   0.957   Corrected to simulate potential effect of
random variables.

Worst Case P-V Error 1/9.93 Wave     Corrected to simulate potential effect
of random variables.

Worst Case RMS 1/30.34 Wave  Corrected to simulate potential effect of
random variables.

 

And finally Some data from my scope
Height at eyepiece 218 cm
Total height 238 cm 
Dimensions 70 x 70 

Height at the end of Bearings 81 cm 
Weight 55 Kgr (reockerbox + mirror box + mirror) 

 

Sincerely 
George Nikolidakis

 

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