N961GW

After accomplishing a touch and go landing, during a moonless night, the pilot initiated a left climbing turn and orientated himself with the departure end of the runway, by looking outside and behind the airplane. While looking outside, the pilot inadvertently put the airplane into a left steep bank and was unable to recover. Prior to the airplane impacting terrain, which resulted in substantial damage to the fuselage and wings, the pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.