A Two-Dimensional Brightness Distribution of the Visible Zodiacal Light

By adopting a recently developed semi-empirical methodology for removing the atmospheric diffuse light and an improved technique of individual star subtraction, we have newly reduced the distribution of the visible zodiacal light (ZL)brightness from almucantar scan observ ations of the night sky brightness at Mt.Haleakala, Hawaii.The resulting two-dimensional map of the ZL brig htness covers the sky over 40°≤ λ-λ⊙ ≤320° and -40°≤ β≤ 40°and its angular resolution 2° ×2°is fine enough to reveal optical counterparts of the structures in the zodiacal emission first found from the IRAS space observations.