Also known as SH2-274 this relatively extended and old planetary nebula shows nice filaments but at a low surface brightness between mag 16 and mag 25. Its twisted structure reminds to the hair of Medusa. It extends above 4 light years at a distance of 1500 light years.
Image data:
HaO3S2LRGB (280-360-560-240-160-160-160 min) total 32 h, north is up, seeing 0.8-1.2 arc-sec,
80cm f/7 Astrooptik Keller cassegrain, FLI PL-16803, Astrodon gen2 filters, Prompt 7 CTIO Chile
Processing: Johannes Schedler
The nebula here is shown in Hubble narrowband palette with sulfur as red, H-alpha as green and oxygen as blue in 30/70% size.
Below you see a version in regular color in 30/70% size.