Friday, Nov 8, 2024

HFG1 is a Planetary Nebula located in the constellation of Cassiopeia and was discovered in 1982 by Heckathorn, Fesen and Gull, it was produced by a binary star system (V664 Cas) HFG1 moving quickly through our galaxy creates a shock wave creating an arc and leaving behind a red "tail" of hydrogen, the Nebula is mostly made of oxygen. At the top left another "small" Planetary Nebula, Abell 6 or Pk136+04.1 a bubble of oxygen, also in the constellation of Cassiopeia.