Hemisphere:  Southern  ·  Constellation: Vela (Vel)

Image of the day 05/05/2019

    Herschel’s Ray - NGC 2736, 



    
        

            Terry Robison
    Herschel’s Ray - NGC 2736
    Powered byPixInsight

    Herschel’s Ray - NGC 2736

    Image of the day 05/05/2019

      Herschel’s Ray - NGC 2736, 



    
        

            Terry Robison
      Herschel’s Ray - NGC 2736
      Powered byPixInsight

      Herschel’s Ray - NGC 2736

      Technical card

      Imaging telescopes or lenses: RC Optical Systems RCOS 10" Ritchey-Chrétien

      Imaging cameras: SBIG STL-11000M

      Mounts: AP900GTO Astro Physics

      Guiding telescopes or lenses: RC Optical Systems RCOS 10" Ritchey-Chrétien

      Guiding cameras: SBIG STL-11000M

      Filters: Baader OIII Narrowband 8,5nm CCD-Filter 2" OIII 8,5nm 2''  ·  Astrondon Astrodon

      Accessory: FLI CW2-7 Filter wheel 7  ·  SBIG AO-L  ·  SBIG Remote Guide Head


      Dates:April 30, 2019

      Frames: 366x900" (91h 30')

      Integration: 91h 30'

      Avg. Moon age: 25.33 days

      Avg. Moon phase: 18.68%


      Basic astrometry details

      Astrometry.net job: 2668074

      RA center: 9h 0' 15"

      DEC center: -46° 2' 34"

      Pixel scale: 0.804 arcsec/pixel

      Orientation: 256.914 degrees

      Field radius: 0.528 degrees


      Resolution: 3948x2600

      Data source: Own remote observatory

      Description

      Imagine a shock wave racing through interstellar space. This is what you are looking at.

      Herschel’s Ray is a sheet of glowing gas that we see almost edge-on from our vantage point. The structure contains many bright intertwined braided filaments giving a three-dimensional look. You can find this beautiful object near the Vela Pulsar in the constellation Vela. At an estimated distance of 800 light years away, and about 5 light years in length, its size is within the grasp of most amateur astrophotographers. The shockwave is moving through interstellar space at over 500,000 kilometres per hour. After the initial explosion, it was travelling in the millions of kilometres per hour range. I guess we all slow down in time.

      Traditional broadband imaging of this area reveals some lovely dark voids, a range of colourful stars, and a lovely teal colour not present in many celestial objects. Narrowband filters reveal strong emissions that may not be seen clearly with RGB imaging. My intent was to merge the interesting features from both imaging domains into one, and attempting to retain a colour space similar to that found in traditional RGB imaging.

      When I look at the final result, I was pleased with the intermixing of reds and blues at the bottom left of the image. It looks to be glowing and appears to have a three dimensional quality like the main target of the image. The data was pushed fairly hard in an attempt to reveal the background dark voids against a curtain of stellar dust. Hopefully, I didn't introduce to much noise. Herschel’s Ray is an incredible structure racing across the cosmos.

      Instruments Used:

      10 Inch RCOS fl 9.1

      Astro Physics AP-900 Mount

      SBIG STL 11000m

      FLI Filter Wheel

      Astrodon Lum, Red, Green, Blue Filters

      Baader Planetarium H-alpha 7nm Narrowband-Filter

      Baader Planetarium OIII Narrowband-Filter

      Exposure Details:

      OIII 87X1800

      Ha 58X1800

      Lum 52X900

      Red 16X450

      Green 16X450

      Blue 16X450

      Thanks for looking

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