ABSTRACT
Results are reported of a program to determine the brightness of the night sky at Kitt Peak during the recent solar minimum. Well-calibratd photometry in B and V suggests that the average brightness of the night sky during this period was approximately V = 21.9, B = 23.0 in magnitudes per square arcsec, but that variations of a few tenths of a magnitude can occur from night to night, or even during a single night. Since 1987, the sky has already brightened considerably, probably due to the increase in solar activity as the sun moves toward sunspot maximum in 1991.