Followers of this blog will note the many Astro-Images I’ve posted over the years. I enjoy combining greyscale images exposed with red, green, and blue filters by the Hubble Space Telescope and making a color version of the subject. Instruction about my technique can be found at this earlier post.

Several weeks ago, I used that technique to colorize the galaxy NGC 1433 in the southern constellation Horologium. It was first observed in 1826 by Scottish astronomer James Dunlop. It is 46 million light-years from Earth and now classified as a Seyfert galaxy with an active galactic nucleus displaying intense star formation. Here is my color version. A better version from a NASA site can be seen here. Star forming occurs in the outer light blue ring. Much more intense star forming occurs in the central nucleus. The dark regions are dust lanes. All images of the galaxy in this post are oriented the same for ease of comparison.