An amateur astronomer strikes gold when, for the first time, he was able to image the initial burst of optical light produced by a supernova millions of light years from Earth.

Victor Buso of Rosario, Argentina is a locksmith by trade and a self-taught astronomer.

This is a sequence of combined images (negatives, so black corresponds to bright) obtained by Víctor Buso as SN 2016gkg appears and brightens in the outskirts of the spiral galaxy NGC 613. (V. BUSO, M. BERSTEN, ET AL.)

This is a sequence of combined images (negatives, so black corresponds to bright) obtained by Víctor Buso as SN 2016gkg appears and brightens in the outskirts of the spiral galaxy NGC 613. (V. BUSO, M. BERSTEN, ET AL.)

On September 20, 2016, Mr. Buso was trying out a new camera he had purchased for his 41 cm telescope.

To test his camera he took a sequence of photographs of  a spiral galaxy located some 67 million light years in the constellation Sculptor.

The sequence included photos of the galaxy before and after the supernova’s “shock breakout”.

This is when a shock wave explodes from the star’s core and quickly produces a bright light.

The supernova has been named SN 2016gkg.

Details of Buso’s discovery and of follow-up observations by professional astronomers have been published by journal Nature.