NGC2237 is popularly known as the Rosette Nebula. it contains the cluster NGC2244 in the centre. It is about 5500 light years from Earth and has a big angular size of approximately 80'x 60'. I have been planning to image this nebula since early 2005, but due to weather and the fact that the nebula isn't very high in the sky, it was not possible until january 2006.
4 & 27 January 2006
Ha was used as Luminance and combined with RGB in Photoshop using Luminance Layering (LLRGB). Curves and levels applied for final colour balancing. Clone tool was used for removal of artifacts from passing satellite during green channel captures. Thanks to Tom How for support and processing tips!.
24 January 2006
This is the Ha exposure as used in the image above.
Click the image for larger size.