Axis of Zodiacal light Near Tropic Cancer
  The axis of zodiacal lights have been obtained in blue and yellow colors
using photoelectric observations of zodiacal light. These observations have
been carried out at Abu Simbel Site in Egypt, in October 1975. This site lies
too near to the tropic of Cancer, at which the axis of the zodiacal light cone
perpendiculars to the horizon. The results show that the plane of the zodiacal
light is inclined to the normal by 1.59 degrees in blue color and 1.18 degrees
in yellow color. This means that there is a slight variation in zodiacal light
axis with wavelength, and the axis almost coincide with the ecliptic. The
present results for blue color can be considered as the first one in the world
near the tropic of Cancer.
