This is a reprocessing of this image of M51. Differences of note are that I used PixInsight for LRGB composition and spent more time on extracting the fainter elements of the image. I also have an alternate view of the same data. I preferred this orientation of the image after looking at both options.

Acquisition Details:
Date: 03/18/2007
Exposure: L: 70x2 min, RGB: 15x2 minutes
Telescope: TEC 140 APO at f/7 (1000mm)
Mount: Atlas EQ-G
Camera: SXV-H9