Valter Luna: Site: Novi ligure (AL) - Date: 18-20 May 2010 - Optics: Skywatcher Newton 254/1200 - Mount: Skywatcher NEQ-6 SynScan 3.27 - CCD: Atik 16ic - Guide: Orion SSAG on Tecnosky 70/420 - Filter: Ha Astronomik 12Nm - OIII Orion Extra Narrow Band 7Nm