GMOS image of GRB130427A afterglow

Gemini Multi-Object Spectrograph acquisition image showing the afterglow of GRB130427A (center) which is so bright that it saturates the instrument’s CCD. The fuzzy object just to the lower left of the GRB is a galaxy at approximately the same redshift (distance). The GRB afterglow shines about 400 times brighter than that entire galaxy.