The complete visual light curve of SN 1987A: Thirteen months of FES observations

Astronomy and Astrophysics – Astronomy

Scientific paper

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Iue, Light Curve, Spaceborne Astronomy, Star Trackers, Supernova 1987A, Ultraviolet Astronomy, Calibrating, Stellar Radiation, Stellar Spectrophotometry

Scientific paper

Visual brightness measurements of SN 1987A are being obtained with the IUE acquisition camera and star tracker Fine Error Sensor, (FES) as part of each ultraviolet observation. Due to IUE's around-the-clock operation and lack of clouds, the FES record of SN 1987A provides the most complete set of visual photometry of the supernova made by any single instrument. The data illustrate the photometric limitations of the FES (+ or - 0.03 mag). Use of differential photometric methods are recommended for IUE observers desiring accurate photometry from FES measurements made during their observing shifts.

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