NGC 6888 Crescent Nebula in Cygnus
RGB imaged 2006 September 23rd at the Kelling
Heath Star Party, Norfolk, UK
Ha imaged 2006 August 29th from my home observatory Leigh on sea, Essex, UK
Televue TVNP101 100mm APO refractor 540mm fl.
Sbig ST4 autoguider on G11 Mount
Starlight Xpress HX916 CCD camera
True Tech RGB colour filters. Astronomic Ha filter
HaRGB image Ha 60 mins 1x1, R 30 mins 1x1 G 30mins 1x1, B 30mins 1x1, 150 minute total exposure.
All 5 min sub exposures.
The Ha luminance images were taken from my Leigh on sea observatory which is heavily light polluted but otherwise with good conditions. The RGB colour components were taken from Kelling Heath during the Equinox star party. The sky was dark but slightly hazy and the conditions were very windy.