THE HIGH-EXCITATION PLANETARY-NEBULA NGC-7662

Wavelengths and identifications have been provided for approximately 3 00 lines between 3660 and 10125 Angstrom in the spectrum of the archet ypal bright, high-excitation planetary nebula NGC 7662. These lines ar e measured with the Hamilton echelle spectrograph at Lick Observatory and are supplemented by image-tube data. Published results are used to construct diagnostic diagrams and derive ionic concentrations. The el ectron temperature indicated by [O III] is about 12,500 K; the density regimes consist of N-epsilon = 5000-17,000 cm(-1). Derivation of prec ise abundances will require appropriate model calculations, but with t he aid of homogeneous spherical model procedures we find C to be enhan ced, N marginally so if at all, and heavier elements depleted with res pect to the Sun. These conclusions are in harmony with those of Barker .