Tag: Emission nebula

NGC2264 Cone nebula

Cone nebula is a giant cloud of ionized hydrogen gas, which includes the Christmas Tree Cluster. It’s located between two bright winter stars Betelgeuse (constellation Orion) and Procyon (Canis Minor) and it’s 2700 light-years far from the Solar System. There is a famous picture from Hubble Space telescope of the tip of the cone – star forming complex.

Bi-color picture didn’t look as I expected, therefore I decided to publish only mono version of hydrogen alpha channel.

NGC6820 Nebula

NGC6820 Nebula doesn’t have a name, so let’s call it Hidden octopus nebula (because only one tentacle is visible). Hidden octopus nebula is a giant cloud (50 light years in diameter) of ionized hydrogen alpha gas, where new stars are born. The tentacle forms similar structure just like in more famous M16 Eagle nebula. It’s located in constellation Vulpecula (Little fox) not far from M27 Dumbbell nebula and it’s 6000 light year from Earth.

The picture was processed in bi-color technique. This means: two narrow band pictures, one H alpha and OIII. H alpha inserted into the red channel, OIII into the green and blue one.


NGC 6888 – Crescent Nebula

In an emission nebula located in constellation Cygnus (swan), 5000 light years from Earth. The nebula has 25 light years (!) in diameter. This constellation, as well as the nebula is lying on the plane of our home galaxy Milky Way. Therefore there are so many stars visible.

The picture was processed by bi-color technique – this means that the picture is assembled from two narrow band images: hydrogen alpha (Ha) and ionized oxygen (OIII). Ha was inserted into red channel and OIII into green and blue.