[Laser] Results from the Lunar Eclipse

[F1AVYopto at aol.com]

>When moving the scope & PMT to the moon  in full eclipse, the light from the 
moon gave 20dB or more >increase in  overall noise.  The only discernable 
signals on Spectran with fairly short  integration were from >60, 120, 155Hz.  
The 60 and 120 were the same  level as off the moon, so I don't think they are 
moon >sourced.  The  155Hz also was something in my area, but not sure what.  I 
have a few 100's  of MB's of >WAV files if someone has some ideas on 
processing. 

Jim,  
I have seen your pictures and Spectran graphs with a great interest.
The  signal to find must be at 100 Hz and 300 Hz and not at 50 Hz!
The signal we  found is so weak that the Spectran parameters to detect the 
120 Hz line are  extremely critical.
It is very important to release the auto bright button  and to adjust 
manually brightness and contrast to display the weakest spectral  lines.
It is also very important to use a smaller resolution to improve the  
sensitivity 
Less than 0,1 Hz resolution with a small average factor (4 is  good with 
average active) associated with a very low waterfall speed will allow  you to 
detect extremely weak signal.
If you can send me small parts of your  files (you can cut a few significant 
1 Mo recorded segments with Audacy or  WavePad programs) I will scan them 
carefully with my FFT tools. 
73 QRO Yves