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  Objectname: Cygnus widefield   Optics: Mamiya 80 / 1.9 medium format lens @ f/4
  Object type: several HII objects   Focal length: 80 mm
  Constellation: Cygnus   Camera: FLI Microline 16803-65
  Location/Date: Remseck / 13.11.2010   Exposure: 6 x 1200 sec H-alpha / 3 x 1200 sec OIII / 2 x 1200 sec SII / 1 x 300sec RGB
  Distance: 4700 Lj (NGC 6888)   Filter: Baader H-alpha 7 nm / Baader OIII 8.5 nm / Baader SII 8 nm / Baader RGB
  Displayed FOV: 25° x 25°   Mount: 10micron GM2000
  - -   Autoguiding: none
  - -   Image processing: MaximDL 5/ Photoshop CS3
  Position (R.A. / DEC): center: 20h 12' / +38° 21'   Color method: Tone-mapping: Ha = light red / OIII = cyan / SII = deep red / RGB star color overlay
 
 

Explanation:

This image is a widefield of Cygnus from bright Deneb to Albireo, the famous double star.

The colors have been matched using the tone-mapping method. H-alpha and SII match the red colors, OIII directly was set to cyan. No RGB-frames have been used for the nebulaes.

To obtain colored stars, a short exposed RGB-star image was overlayed to the final image.