1904 20160701171655.0 ASTROimport-61 Helt, B. E. 1991 Stromgren six-colour photometry of SN 1987 A. I - Days 1 to 330 Results are presented of photometric observations of SN1987A with the Danish 0.5-m telescope at La Silla for the period February 1987-January 1988, including color lines and magnitudes from day 1 to day 300. For the first time, flux calibrations for H-beta passbands were derived. Included are also improved flux calibrations for the uvby passbands. Bibo, E. A. Cuypers, J. Debehogne, H. de Campos, J. A. Franco, G. A. P. Gimenez, A. Gray, R. O. Lindgren, H. Lundstrom, I. Manfroid, J. Ng, Y. K. Olsen, E. H. Pernier, B. Petersen, C. S. Vaz, L. P. R. Verschueren, W. Astronomy and Astrophysics Supplement Series 89 1991 399-409 http://esoads.eso.org/abs/1991A%26AS...89..399H published in REFERD