This is a partially completed image from late December 2015, of the heart of the Rosette Nebula (NGC2237) in the constellation of Monoceros. This is a four image mosaic now, but eventually it will probably have 5-6 combined images. For this image I’ve modified the standard Hubble palette, mapping SII to blue, H-alpha to green (as usual) and mapping OIII to red, swapping the SII and OIII from the standard Hubble mapping. I think this particular nebula responds well to those changes. The Rosette and its associated star cluster are about 5,000 light years from earth. Click on the image for a larger view. This is about a 5 hour exposure for each panel.