I live about 13 miles north of downtown Los Angeles just inside the White Zone. I used to be outside the White in a Red Zone 3 years ago, but the widespread installation of LED street lighting is making things much worse. My SQM is now typically around 18.0 to 18.3 at the zenith, but pointing south toward LA anywhere lower than 50-degrees will net a reading of around 15! Its darker in my living room!!!
To my north I have a sodium streetlight just off to the right of the end of my driveway, which I block by setting up in the shadow of my front neighbor's house.
On the next street uphill from me I have a large car dealership with its lot tower lights, a Post Office loading dock with 6 unshielded and very bright fluorescent lights. The street itself is now lined with full-spectrum LED streetlights as of last Fall.
All around me are taller houses with security lights, patio lighting, plat spotlights and other annoying and useless outdoor lighting.
Its getting worse and worse with each passing year…
Somehow I still manage to shoot 5nm Ha and occasionally 5nm SII from my driveway… LRGB is out of the question as the CCD is swamped in a few seconds. Since the spread of LED street lights, shooting OIII from home is now all but impossible as well.
In the winter the heat plumes and chimneys from my neighbors home's make shooting from my driveway even more challenging. Focus is very difficult and seeing is very poor. I usually head for the desert in the winter, and in the summer I head to the mountains. Those areas, while only 1.5 to 2 hours away are around an SQM reading of 20 to 21.
Of course my wife and I are always on the lookout for a place to move, but LA is very very crowded these days and its hard to find affordable housing.
I do the best I can.
