IC5146 Cocoon Nebula

Constellation: Cygnus        Distance: 3900 lightyears

IC5146

Click for full resolution (3120 x 2274)

Image spcefications:
  • Exposure: 2,5 hours, RGB = 50:50:50 minutes
  • Camera: SBIG ST-8300M, Temp -25 ° C, Baader RGB filters
  • Instrument: TEC 140 with field flattener, focal distance 980 mm
  • Mount: Losmandy G11
  • Guiding: TS Off Axisguider, Starlight Xpress Lodestar autoguider and PHD
  • Location: Etoile St. Cyrice, France
  • Sky Quality Meter: 21,30
  • Ambient temperature: 11° C
  • Date: 5 and 6 october 2013

Image acquisition with ImagesPlus 4.0 Camera Control with dither:
  • 5 Red + 5 Green + 5 Blue of 10 min, binned 1x1
  • 20 Flat fields per channel with Aurora Flatfield panel
  • At home, camera in fridge:
  • 20 Dark frames of 15 min + 20 Dark frames of 10 min
  • 20 Flat darks (per channel) + 20 Bias frames

Processing in PixInsight 1.8
  • ImageCalibration, ImageIntegration, StarAlignment, ChannelCombination
  • BackgroundNeutralization, ColorCalibration, HistogramTransformation
  • RGBCombination, TGVDenoise, CurvesTransformation, SCNR
  • ATrousWaveletTransform, PixelMath