Measuring Transparency

My understanding is that transparency is measured by determining the limiting magnitude (magnitude of faintest star visible to the naked eye). But doesn't light pollution influence this, as well? How, then, do I accurately measure transparency in the presence of light pollution?

Walt

Walt Soderman said:

My understanding is that transparency is measured by determining the limiting magnitude (magnitude of faintest star visible to the naked eye). But doesn't light pollution influence this, as well? How, then, do I accurately measure transparency in the presence of light pollution?

Walt