Markarian’s Chain

This is M17, the “Swan Nebula”. Everyone seems to see something different in it! To me the whole thing looks like a swan seen from the side, but my family sees different birds within it. It’s like seeing shapes in clouds, which makes sense, as this is just a really, really big cloud of gas…

Formally NGC1570, the “Northern Trifid” is a combination of an emission nebula (the red parts, which is ionized Hydrogen emitting its own light) and a reflection nebula (the blue parts, which is starlight reflecting off dust.) You can also see hints of the dust surrounding this area, which is difficult to capture under the light-polluted…

An interesting emission nebula 30 light years across. Imaged with narrowband filters.

Well, it was certainly born of fire. This is planetary nebula Abell 39, one of the largest spheres in the galaxy… it’s 2.6 light-years across! It really is that color blue. You’re seeing ionized Oxygen gas blown off by the dying star in its center. Look closely for the distant galaxies in the background, including…

This young star cluster inside the Heart Nebula is lighting up the clouds of gas from which it formed. 3 hours of narrowband exposure from my suburban driveway.

M17 is commonly known as the Swan Nebula or the Omega Nebula. From this angle, I think it looks more like a crab – but “Crab Nebula” was taken! Shot over a hazy summer night, with narrowband filters for the gases of the nebula itself, and RGB natural-color filters for the stars. Presented processed with…