CTB1 - Garlic Nebula

Tip: I think the level of knowledge required to process this data is high. The OIII channel is very weak and requires special noise reduction work.

CTB 1, also known as G116.9+00.1 and AJG 110,[1] nicknamed the Medulla Nebula,[2] is a supernova remnant located in the constellation Cassiopeia. It was discovered as a radio source in 1960 in a study of galactic radiation carried out at a frequency of 960 MHz.[3]