Eta Carinae. I. The Nebulosity.

A series of photographs taken with the C6rdoba 61-inch reflector discloses the complex structure of the nebula surrounding Car. Isophote-curves are drawn for a wide scale of exposure times. The blending of the star's nebula with the galactic nebulosity is shown. Identifiable parts of the nebula, measured previously as stellar components, are shown to be moving radially away from the nucleus at speeds compatible with the assumption that they were ejected from the star in 1843 or later.