Abstract
Spectrophotometric observations of P/Halley are presented for four nights in the optical region (γγ3200–7000 ∢) during post-perihelion period. Emission features due to CN, CH, C3 and C2 molecules are identified and the total apparent fluxes in each emission band are measured. It is found that the comet display large variations in the emission bands as well as continuum.
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