While most spiral galaxies, including our own Milky Way, have two or more spiral arms, NGC 4725 has only one. In this image, the solo spiral arm seems to wind from a prominent ring of bluish, newborn star clusters and red tinted star forming regions. The odd galaxy also sports obscuring dust lanes a yellowish central bar structure composed of an older population of stars. NGC 4725 is over 100 thousand light-years across and lies 41 million light-years away in the well-groomed constellation Coma Berenices.
I took this image over 15.5 hours. (Luminance data for 30 images of 20 minutes each and each color for 11 images of 10 minutes each).