LIGHT POLLUTION at Southern Stars Observatory
Since March 2007 , the City of FAAA has installed Street Light in the road in the North :N.West of SSO , the pollution is caused by 5 standard lamps and one is just  in front of the observatory . the lamp  are Sodium high Pressure
Despite the light pollution, the sky is relatively dark, the light of these lamps is not entering the telescope, it is protected by a long light shield.
plywood masks are installed around the observatory, when observing (pics follows)


On these pictures ,  my neighbor cut his high hedge that protected me a bit of street lights

                                                          
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Observatory at twilight , Street light are turned on  ( North side)



2 hours later  ( for now South is without light)




Street Light  on Nort East ( we can use plywood mask , not shown)