Abell21, Medusa Nebula

Constellation: Gemini        Distance: 1500 lightyears

medusa

Click for full resolution (2929 x 2199)


Image spcefications:
  • Exposure: 4 hours, LRGB = 110:40:40:40 minutes
  • Camera: SBIG ST-8300M, Filters: Baader LRGB
  • Instrument: TEC140 with field flattener focal distance 980 mm
  • Mount: Losmandy G11
  • Guiding: SBIG Off Axisguider, Starlight Xpress Lodestar autoguider and PHD
  • Location and date: Netherlands, Wateren, 18 Mars 2018

Image acquisition with ImagesPlus 6.0 Camera Control:
  • 11 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 + 20 Dark frames of 10 min
  • 50 Bias frames

Processing in PixInsight 1.8