This is a reprocessed M51 with more color data.
Compare with : http://www.pbase.com/mariobmd/image/97922204 with 60 mins each RGB color data.
Takahashi TOA130S, NJP Temma 2 mount ina PWT Pinnacle pier
SBIG ST2000XM with Astrodon i-series LRGB filters.
Exposure: Luminance 110 mins with 300 secs subexposures, RGB: 80:80:80 mins binned 2x2 exposures at 300 secs subexposures.
Image capture with MaxIm Dl, Image processing with CCD Stack and PS CS2
Taken in Jackson, Ohio