Abstract:
Phtotoelectric spectrum scans of the head of comet Bennett (1969i) covering the range 352÷612 mμ are presented and the emission features of CN, CH, C₂ and Na have been identified. The scattered light becomes redder as the phase angle decreases and matches with the solar light scattered according to the λ² law at a particular phase angle indicating that the size of the scattering particles is of the order of 0.5 μ.
