M5

Constellation: Serpens        Distance: 24.000 lightyears

m5

Click for full resolution (3258 x 2421)

Image spcefications:
  • Exposure: 3,5 hours, LRGB = 60:40:40:40 minutes, for core RGB 1, 3 and 5 min
  • Camera: SBIG ST-8300M, Temp -25 ° C, Baader LRGB filters
  • Instrument: TEC 140 with field flattener focal distance 980 mm
  • Mount: Losmandy G11
  • Guiding: SBIG Off Axisguider, Starlight Xpress Lodestar autoguider and PHD
  • Location and date: Etoile St.Cyrice, France, 24 April 2015

Image acquisition with ImagesPlus 5.75 Camera Control:
  • 6 Luminance of 10 min, binned 1x1
  • 4 Red + 4 Green + 4 Blue of 10 min, binned 1x1
  • 20 Flat fields with flatfield panel
  • 20 Dark frames of 10 min
  • 50 Bias frames

Processing in PixInsight 1.8
  • ImageCalibration, ImageIntegration, StarAlignment, ChannelCombination, BackgroundNeutralization, DBE, ColorCalibration, DynamicCrop
  • StarMask, RangeMask, Convolution, Pixelmath, ATrousWaveletTransform
  • Non lineair: HistogramTransformation, CurvesTransformation, SCNR, MorphologicalTransformation, ACDNR, HDRComposition