[Laser] Re: Lunar Eclipse #3

F1AVYopto at aol.com F1AVYopto at aol.com
Sat Mar 1 19:10:27 EST 2008


Hi all
Remember the moon is a very poor albedo reflector.
The IR moon  albedo map had been précised by the Clementine space orbiter.
In the visible  part of the spectrum the properties are rather the  same.
http://www.cmf.nrl.navy.mil/clementine/albedo.html 
The best area is  the Tycho crater (about 85 Km) and its associated ejectas. 
(albedo 0,2)
The  seas are very bad with less than 0,05 optical albedo.
To try to detect the  street lights from the moon the target must be only the 
Thyco crater and its  ejectas.
This 200 Km area gives a small phase cancellation by  curvature.
The reception has to be made by occular projection so the picture of the  
moon is much bigger the photodetector area.
The brightest cities in Europe  are not far the ones to the others and the 
grids are synchronic.
The  North of Europe bright area has also a small curvature.
I am certain theses  curvatures combinations do not fully cancel all the 100 
Hz components.
73 Yves F1AVY












   


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