NGC2736, aka the Pencil Nebula or Herschel's Ray, is a small section of the Vela Supernova Remnant approximately 800 light-years from Earth in the Southern constellation of Vela. It glows brightly due to ionised Hydrogen (red) and Oxygen (blue/green) where the shock wave from the supernova has ploughed into interstellar gas clouds. The original, violent death of the star which went supernova took place approximately 11,000 years ago.
Data captured by Martin Pugh with his CDK17 at Yass. Process by yours truly with PixInsight 1.8.5.
Scope: Planewave CDK17 @ f/6.8 = 2939mm FL
Mount: Paramount ME
Camera: SBIG STXL-11002/AOX
Filters: Astrodon LRGB gen II, 3nm NB
Image scale: 0.63 arcsec/pixel
Exposures: 3x600s R, 3x600s G, 3x600s B, 14x1800s Ha, 14x1800s Oiii (15.5 hours)
Big version on Astrobin as usual:
https://www.astrobin.com/full/340790/0/
Hope you enjoy the image and please feel free to beat me over the head if I screwed it up
Cheers,
Rick.