LBN 576 in H alpha - Oxygen III - RGB (Reprocessed 20/05/2022)

LBN 576 (also known as Abell 85 and CTB 1) is a large supernova remnant in Cassiopeia.

It was initially catalogued by George Abell as a planetary nebula, but it soon became clear that it was an SNR. It was also recognized as a radio source and thus given the designation CTB 1... Updated 20/05/2022

M 51

Located in the constellation of Canes Venatici, M51 is one of the most famous spiral galaxies in the sky and together with its neighbour NGC5195, it is also a clear example of galaxy interaction...Read more