Different technical steps between 1978 and 2010 for photographing North america nebula in Cygnus constellation
1974 - Black and white Canon FTB QL and 130 mm lens
1996 - true color of north nebula
2004 - true color of north nebula Canon 300D and lens 200 mm F/2.8
2006 - North america nebula with FS60C and SBIG STL4202M - False color with narrowband filters Ha OIII SII
2008 - North america nebula with FSQ 106ED and SBIG STL4202M - False color with narrowband filters Ha OIII SII
2009 - Pelican nebula with FSQ 106ED and SBIG STL4202M - False color with narrowband filters Ha OIII SII
Close-up of Pelican nebula
