Spectroscopic and photometric observations of SN 1987A- II. Days 51 to134.

This paper presents spectroscopic and photometric observations of SN 1987a in the Large Magellanic Cloud, made at the Sutherland field station of SAAO and in Cape Town for days 51-134 after the Kamiokande-II neutrino event. During this period, both the bolometric flux from the supernova and the apparent angular radius of the photosphere reached a maximum and subsequently declined. Some discussion is included based on a comparison between the derived fluxes and those predicted by selected theoretical models.