The Triangulum Galaxy is a spiral galaxy 2.73 million light-years (ly) from Earth in the constellation Triangulum. It is catalogued as Messier 33 or NGC (New General Catalog) 598. With the D25 isophotal diameter of 18.74 kiloparsecs (61,100 light-years), the Triangulum Galaxy is the third-largest member of the Local Group of galaxies, behind the Andromeda Galaxy and the Milky Way.The galaxy is the smallest spiral galaxy in the Local Group (although the smaller Large and Small Magellanic Clouds may have been spirals before their encounters with the Milky Way), and is believed to be a satellite of the Andromeda Galaxy or on its rebound into the latter due to their interactions, velocities, and proximity to one another in the night sky. It also has an H II nucleus.
~ WikipediaThis is another work-in-progress (what isn't?). I'm looking to get more data in all channels.
OK, this is turning into an exercise in processing...
@Russ Brasser and I have semi-joked that it is near impossible to get the same result twice from Pixinsight. So far, trying to get the M33's core to be yellow has been an exercise in Chaos Theory (initial conditions). I got it once by accident, when I did not run SPCC. But every time I run SPCC, I get blues and purples. I'm fairly convinced that the yellowish core has too much saturation in my RGB image. The luck that I've had so far is to really crank the saturation down in the core, using HDR Multiscale Transform and other tricks.
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