This CCD image was taken with a Nikkor 24mm f/2.8 (operating at f/4), the Mandel Wide Field Imaging Adapter, SBIG ST10XME camera and a CFW8 with a 4nm  H-a filter .  It is the combination of  the following exposures for a total exposure time of 4 hours:   12 x 20 minutes

 The image was  processed using MaxIm DL and Photoshop.