NGC 2467 – Skull and Crossbones nebula

NGC 2467

Thirty-Three 5-minute light frames, calibrated, registered, stacked, and post-processed using PixInsight. This may well be the most exposures I have taken of one object in one night, and the resulting reduction in noise is fantastic!

Date taken: 05/01/2016
Location: Adelaide, South Australia
Camera: Canon 450d w/ IR filter removed, GSO coma corrector
ISO800
Mount: HEQ5PRO
Scope: GSO 8″ f/5 Newtonian
Autoguider: Orion Starshoot AG
Imaging: BackyardEOS w/ PHD dithering
Guiding: PHD2
50 bias frames, 20 dark frames, 50 flat frames.
Total integration time: 165 minutes

PRE-PROCESSING DETAILS:

  • BatchPreProcessing, calibration and debayer
  • Blink to find and remove any really bad frames
  • Star Alignment
  • Blink to make sure everything aligned well
  • Image integration (using Winsorized Sigma Clipping)
  • Automatic Background extraction

PROCESSING THE IMAGE:

  • Background Neutralisation
  • Colour Calibration
  • Histrogram Transformation
  • TGVDenoise (masked, L channel extracted post-histogram extraction)
  • UnsharpMask (masked, with a range mask so only the interesting nebulae were affected)
  • Histrogram Transformation x2 to further stretch the image after noise reduction
  • Curves Transformation x2 to bring out the colours
  • scnr to remove the green tinge
  • DynamicCrop, removing the less interesting edges of the images

Far less effort was required to reduce the noise in this image – TGVDenoise was able to eliminate almost all of the small scale noise in a single pass without ruining the details of the nebula.

NGC2438

Fourteen 5-minute light frames, calibrated, registered, stacked, and post-processed using PixInsight. I took this after the Horsehead Nebula was too low in the sky to get any useful images.

The gathering of stars just above the nebula are commonly known as M46, this region is within the constellation Puppis.

Date taken: 13/03/2015
Location: Adelaide, South Australia
Camera: Canon 450d w/ IR filter removed, GSO coma corrector
ISO800
Mount: HEQ5PRO
Scope: GSO 8″ f/5 Newtonian
Autoguider: Orion Starshoot AG
Imaging: BackyardEOS w/ PHD dithering
Guiding: PHD2
50 bias frames, 20 dark frames, 50 flat frames.
Total integration time: 70 minutes

Pre-Processing details:

  • BatchPreProcessing, calibration only
  • BatchDebayer
  • Star Alignment
  • Image integration (using Winsorized Sigma Clipping)
  • Automatic Background extraction
  • Dynamic Crop to remove some of the dodgy edges
  • Automatic Background extraction to remove any remaining unwanted gradients
  • Extracted luminance from the RGB for later on

Processing the RGB Image:

  • Background Neutralisation
  • Colour Calibration
  • scnr to remove the green tinge
  • atrouswavelettransform (masked, duplicate image, STF autostretch)
  • multiscalemediantransform (masked, duplicate image, STF autostretch)
  • Histrogram Transformation
  • atrouswavelettransform (masked, L channel extracted post-histogram extraction)
  • ACDNR (masked, L channel extracted post-histogram extraction)
    atrouswavelettransform (blurring the image)

Processing the luminance image:

  • atrouswavelettransform (masked, duplicate image, STF autostretch)
  • multiscalemediantransform (masked, duplicate image, STF autostretch)
  • Histrogram Transformation
  • atrouswavelettransform (masked, cloned image with auto clip shadows/highlights)
  • ACDNR (masked, cloned image with auto clip shadows/highlights)

Putting the images together:

  • LRGBCombination, saturation initial tweak.
  • Curves, increase contrast, bring out details

IC434 – The Horsehead Nebula

ic434-lrgb-final

Seventeen 5-minute light frames, calibrated, registered, stacked, and post-processed using PixInsight. I have tried and failed to capture the Horsehead nebula before, so I’m glad to finally tick this one off!

Date taken: 13/03/2015
Location: Adelaide, South Australia
Camera: Canon 450d w/ IR filter removed, GSO coma corrector
ISO800
Mount: HEQ5PRO
Scope: GSO 8″ f/5 Newtonian
Autoguider: Orion Starshoot AG
Imaging: BackyardEOS w/ PHD dithering
Guiding: PHD2
50 bias frames, 20 dark frames, 50 flat frames.
Total integration time: 85 minutes

Pre-Processing details:

  • BatchPreProcessing, calibration only
  • BatchDebayer
  • Star Alignment
  • Image integration (using Winsorized Sigma Clipping)
  • Automatic Background extraction
  • Dynamic Crop to remove some of the dodgy edges
  • Automatic Background extraction to remove any remaining unwanted gradients
  • Extracted luminance from the RGB for later on

Processing the RGB Image:

  • Background Neutralisation
  • Colour Calibration
  • scnr to remove the green tinge
  • atrouswavelettransform (masked, duplicate image, STF autostretch)
  • multiscalemediantransform (masked, duplicate image, STF autostretch)
  • Histrogram Transformation
  • atrouswavelettransform (masked, L channel extracted post-histogram extraction)
  • ACDNR (masked, L channel extracted post-histogram extraction)
    atrouswavelettransform (blurring the image)

Processing the luminance image:

  • atrouswavelettransform (masked, duplicate image, STF autostretch)
  • multiscalemediantransform (masked, duplicate image, STF autostretch)
  • Histrogram Transformation
  • atrouswavelettransform (masked, cloned image with auto clip shadows/highlights)
  • ACDNR (masked, cloned image with auto clip shadows/highlights)

Putting the images together:

  • LRGBCombination, saturation initial tweak.
  • Curves, increase contrast, bring out details
  • Rotated 90°

First Orion Nebula (M42) shot with my gear

Orion is a super easy target for beginners, and it is instantly recognisable in the night sky. This shot was taken without any guiding so I threw away quite a few exposures before I got something I was happy with.

This is a stack of nine 30 second exposures between ISO 400 and 800. The processing was done using DeepSkyStacker.

Orion-stretch

After stretching the image quite a bit, much more detail is revealed!

oldhardware

This is how my gear was set up taking these images – no autoguiding at this point!