2011-01-30 ORION NEBULA - Version A
Version A - Set to keep the background sky nearly black, with good contrast on the core of the nebula. No sign of the Running Man nebula in the top left
50x 30 second exposures were stacked and stretched with PixInsight 1.6, using a Skywatcher 190mm Maksutov Newtonian on an LXD75 mount. Shot with a Canon T1i at prime focus at ISO800. 25 minutes total exposure time.
I used no calibration frames (darks or flats), instead let PI's hot pixel remover work during stacking and reduced the sky glow and vignetting using the Dynamic Background Extractor tool in PI.
Image was sharpened mildly and rescaled to 90% to reduce the file size, and saved to PNG format using The Gimp.
After stretching, I used PI's dark structure enhancer to bring out the dark dust areas.
I shot 80x 30 second exposures, dropped the exposures where the stars were not quite round.
2011-01-30 ORION NEBULA - Version A
Version A - Set to keep the background sky nearly black, with good contrast on the core of the nebula. No sign of the Running Man nebula in the top left
50x 30 second exposures were stacked and stretched with PixInsight 1.6, using a Skywatcher 190mm Maksutov Newtonian on an LXD75 mount. Shot with a Canon T1i at prime focus at ISO800. 25 minutes total exposure time.
I used no calibration frames (darks or flats), instead let PI's hot pixel remover work during stacking and reduced the sky glow and vignetting using the Dynamic Background Extractor tool in PI.
Image was sharpened mildly and rescaled to 90% to reduce the file size, and saved to PNG format using The Gimp.
After stretching, I used PI's dark structure enhancer to bring out the dark dust areas.
I shot 80x 30 second exposures, dropped the exposures where the stars were not quite round.