Natural color composition from the emission of ionized elements, R=80%Hydrogen+20%Sulfur, G=100%Oxygen and B=85%Oxygen+15%Hydrogen to compensate otherwise missing H-beta emission. This composition is very close to a visual spectrum.

Star colors are mixed from the NB channels, Red=H-a, G=O-III and B= 85%O-III + 15%H-a.



Sh2-129 is a diffused nebula in Cepheus. It locates about four degrees west from IC1396. This nebula has a very low surface brightness and there is very few images of it around, I haven't seen this in HST-palette before.

Image area is about three degrees wide. (Six full Moons side by side)