Abstract
ABSTRACT Hundreds of naked-eye observations of bright stars near the southern horizon have been made on clear moonless nights over the interval 1977-91. They reveal a consistency in their visibility from one season or year to another, but a deterioration over the entire time interval reveals a possible increase in light pollution and possibly air pollution as well. The method is constrained to the sky near the northern and southern horizons where stars remain at near-constant altitude over a suitable time interval, but the repeatability assures that it is sound. The limiting magnitude is given as a function of zenith distance, and color and seasonal effects do not appear to influence the results.
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