I made this sketch of M51 with a 625mm (25″) dobson in a starparty located in the Margériaz, France.
The seeing was not really good and there was a few high clouds passes during my observation.
Object Name: M51
Object Type: Galaxy
Location: Margériaz, France
Date: 6th July 2013
Media: graphite pencil (3B, 2H and 4H) on 180g white bristol, then Photoshop CS6 for the inversion and stars processing.
Have a nice day
José Rodrigues