Dark Shark & Anglerfish Nebula

Here is a 4.1 hour exposure of the Dark Shark and Anglerfish nebula. These nebulas lie around 650 light years away from earth, and span around 15-17 light years in diameter. Dark nebulas are the opposite of regular nebulas, they consist of dust that block out the background stars and background light.  In the case of the Dark Shark nebula, you can see a couple of blue stars causing a reflection nebula in the dark nebula. 
Picture
Final Cropped Image
Details of How the shot was Taken
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Gear:
  • Olympus OMD EM-5 Micro 4/3 camera 
  • Skywatcher Star Adventurer (Unguided)
  • Olympus 40-150mm F2.8 lens
  • Home made dew heater
    • Made with nichrome wire wrapped in duct tape, which is powdered by a lipo battery 
​Acquisition & Environment:
  • 168x90 Seconds (4.1 Hours)
  • 1600 iso @ 150mm (300 equivalent) F2.8
  • 50 Flat Frames
  • 50 Dark Frames
  • 60 Bias Frames
  • Taken: August 5, 2019
Processing:
  • Images processed in DeepSkyStacker
    • 2x Drizzle Stack
    • Brought Saturation to 17 and match all rgb levels
  • Photoshop Adjustments:
    • Cropped to remove stacking errors
    • Adjust Levels to bring Histogram to the front
    • Adjust Colour balance to adjust background colour to be neutral
    • Used Deep Sky Colours HLVG tool to remove any unnecessary greens in the photo
    • Used Astronomy tools make stars smaller and sharper
      • Also Ran a tool to decrease deep space noise
    • Increased the Saturation
    • Increased sharpness from inaccurate focusing 
    • Exported into jpeg
Picture
Raw Image from the Camera