Comet C/2011 L4 PanSTARRS belongs to the dozen of the brightest comets since 1950 which have reached at least the magnitude 0. Unfortunately, the viewing geometry from the Earth was far from to be perfect. The visibility on the Northern hemisphere started several days after the perihelion however the comet was moving in the evening sky nearly parallel to western and north-western horizon and the visibility during the period of high comet brightness (March 12 - 20) was limited to about 60 to 90 minutes after the sunset.
Institute of Mathematics, Faculty of Mechanical Engineering
Brno University of Technology, Czech Republic