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The image was shot with narrowband filters to highlight some of the physical processes going on here - i.e. I attempted to get an image with a little scientific value. I shot with three filters that record just the light that's emitted by ionized Hydrogen, ionized Sulfur and ionized Oxygen. I then mapped the data to specific colors. Everything in red in the image is caused by the Sulfur. Green is Hydrogen and blue is Oxygen - aka the Hubble Palette. It shows a bit of what's going on in there and just looks cool at the same time. The effort to construct this image involved combining 106 different images totalling just over 19 hours of telescope time.
http://www.astrobin.com/full/29408/?mod=none
http://asterisk.apod.com/viewtopic.php?f=29&t=30462&start=25#p190659