NGC7000 in Halpha

Object info:
Common name: North-America nebula
Catalog code: NGC 7000
Object type: emission Nebula
Constellation: Cygnus
Object size: 2-3 degrees
Imaging info:
imaging date: 21 October 2011
Optics: Takumar 135mm f/3.5
Effective focal length: 135mm
Camera & filters: Canon EOS20D modified and 12nm H-alpha filter
Exposure & camera settings: 12x15min ISO1600
Imaging software: Nebulosity 2.3
Mount: Vixen GP
Guiding details: autoguiding with PHD 12.1 and Meade ETX with focal reducer and DSI I camera
Image processing:
processing date: 22 October 2011
calibration frames: No flats, 19 darks
stacking & calibration software: Nebulosity 2.4.1
Postprocessing: Nebulosity
Local conditions:
Location: Stroe
Temperature: 4 Celsius