A two-panel mosaic of the Sadr Region

Image:

Click for full resolution

Equipment:

  • Nikon D90
  • Sigma 300mm prime lens
  • Sky-Watcher Star Adventurer
  • Star Adventurer Tripod
  • Bahintov Mask
  • Intervalometer
  • DIY diffraction spikes
  • Stellarium
  • All Sky Plate Solver
  • Sharpcap
  • Laptop

Acquisition:

  • Bortle 2-4
  • Iso 800
  • F4
  • 8/04/2021 – North Panel
    • 122 x 2′ light frames
    • 100 bias
    • 34 dark
    • 43 usable flats
  • 0/06/2021 – South Panel
    • 106 x 2′ light frames
    • no bias
    • 29 dark
    • 50 flats

Processing:

  • Calibrate with WBPP
  • Blink to discard bad frames
  • Generate normalization data with NormalizeScaleGradient
  • Image integrate
  • CFA drizzle scale 1
  • Crop
  • DBE each panel
  • Photometric mosiac
  • TGV noise reduction
  • EZ soft stretch
  • MMT + Curves
  • curves transformation

Annotated Image

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