[Laser] Re: Lunar Eclipse

[F1AVYopto at aol.com]

>I am not suggesting that this guess is  valid.  But if it is "in the ball
>park" ( to use the American idiom  from baseball ) it may be the effects are
>as important as synchronicity  and travel times from curved sources and
>curved reflectors.  If you  overlap the effects, it may be more difficult
>than was previously  assumed.

All the previous considerations are fully right and give many  reflection 
points.
However our experiments let us some evidences for the day  : 
The hum from air diffusing (light pollution) coming from a far away city  in 
Europe, gives two very strong 100 Hz and 300 Hz optical signals roughly with  
the same level (?).
The spectrum from the other harmonics strongly decreases  with the order 
which means probably these signals have not abrupt rising or  falling wave form.
The 100 Hz and the 300 Hz have respectively 3000 and 1000  Km wavelength.
The 120 and the 360 Hz have respectively 2500 an 833 Km  wavelength
A half wave offset destroys of course the signal between two equal  intensity 
separate sources but with random lighted areas, constructive and  
deconstructive beats can occur.  
During our March 3rd 2007 experiment  the USA East Cote was near the earth 
limb (view from the moon checked by the  Home Planet program) and New York was 
probably the main light  contribution.
The moon has a very poor albedo and the best reflective area on  the aiming 
line was the Tycho crater and its ejectas area (Albedo 0,2 and about  500 km in 
diameter) 
We are fully aware that the 120 Hz thin line which  appears in the FFTDSP 
spectrum can be a great chance or a local spurious  signal.
However this signal was absolutely not detectable out of the moon  disc...
(picture at     http://pageperso.aol.fr/F1AVYopto/opto/spectrum.JPG   )
73 Yves  F1AVY.