Barnard 150 Seahorse Nebula

Constellation: Cepheus        Distance: unknown

Seahorse Nebula

Click for full resolution (6209 x 7441)

Image spcefications:
  • Exposure: 11.5 hours, LRGB = 540:90:90:90
  • Camera: ZWO ASI2600MM, Temp -10 ° C, Baader LRGB filters
  • Instrument: TEC 140, focal distance 980 mm
  • Mount: Paramount MX+
  • Guiding: TS Off Axisguider, Starlight Xpress Lodestar autoguider and PHD
  • Location: Nozières, France
  • Ambient temperature: 25° C
  • Date: 21, 22 and 23 August 2023
  • © Frans Kroon, Arno-MarkBlesgraaf

Image acquisition Sequence Generator Pro:
  • 3 panel mosaic: 54 Luminance of 10 minutes, binned 1x1
  • 3 panel Mosaic: 18 Red + 18 Green + 18 Blue of 5 minutes, binned 1x1
  • 25 Flat fields per channel with Flatfield panel
  • 20 Dark frames of 10 minutes + 20 Dark frames of 5 minutes + 50 Bias frames

Processed with PixInsight 1.8.9-2:

    Lineair:
  • ImageCalibration and StarAlignment
  • ImageIntegration and ChannelCombination RGB
  • GraXpert on Lum and RGB
  • ImageSolver and SPCC on RGB
  • BlurXTerminator on Lum and RGB

  • Non Lineair:
  • HistogramTransformation on Lum and RGB
  • NoiseXTerminator on Lum and RGB
  • LRGBCombination

  • For Mosaic:
  • ImageSolver (list to make WCS)
  • MosaicByCoordinates (to make WCS_registered)
  • GradientMergeMosaic

  • StarXTerminator with Generate StarImage
  • CurvesTransformation on starless photograph
  • MorphologicalTransformation (smaller stars) on StarImage
  • CurvesTransformation (more color in stars) on StarImage
  • PixelMath to put them together