Pickering's Triangle in the Veil Nebula

Constellation: Cygnus        Distance: 1470 lightyears

veil nebula

Click for full resolution (2871 x 2106)

Image spcefications:
  • Exposure: 11 hours, RGBHaO3 = 60:60:240:240 minutes
  • Camera: SBIG ST-8300M, Temp -25 ° C
  • Filters: Baader RGB, Astrodon 5nm Ha and 3nm O3
  • Instrument: TEC 140 with field flattener, focal distance 980 mm
  • Guiding: SBIG Off Axisguider, Starlight Xpress Lodestar autoguider and PHD
  • Mount: Losmandy G11
  • Ambient temperature: Between 9 ° C and 11 ° C
  • Location: Etoile St.Cyrice, France
  • Date: September 2014, September 2015

Image acquisition with ImagesPlus 5.75 Camera Control:
  • 6 Red + 6 Green + 6 Blue of 10 min, binned 1x1
  • 12 H-alpha of 20 min, 12 O3 of 20 min, binned 1x1
  • 20 Flat fields with flatfield panel
  • 20 Dark frames of 20 min
  • 50 Bias frames

Processing in PixInsight 1.8
  • ImageCalibration, ImageIntegration, CosmeticCorrection, StarAlignment, ChannelCombination, BackgroundNeutralization, DynamicCrop
  • StarMask, Convolution, Pixelmath, ATrousWaveletTransform
  • Non lineair: HistogramTransformation, CurvesTransformation, MorphologicalTransformation, ACDNR