M51 HDR

Shotdate 07-03-2011

Camera: Nikon D3x

Optics: Celestron 9.25" Edge HD

Guiding: LVI AutoGuider 2

Mount: Sky-Watcher HEQ6 Pro

 

Revisited version: www.flickr.com/photos/14721988@N02/6976343764/in/set-7215...

 

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Stacked in DeepSkyStacker 3.3.2

 

19 frames 300 seconds (ISO: 800) - total exposure: 1 hr 20 mn 11 s

 

RGB Channels Background Calibration: Yes

Per Channel Background Calibration: No

Method: Kappa-Sigma (K = 2.00, Iterations = 5)

 

Offset: 120 frames exposure: 1/8000 s

Method: Kappa-Sigma (K = 2.00, Iterations = 5)

 

Dark: 10 frames exposure: 5 mn 7 s

Method: Kappa-Sigma (K = 2.00, Iterations = 5)

 

Flat: 40 frames exposure: 1/4 s

Method: Kappa-Sigma (K = 2.00, Iterations = 5)

 

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Processed in PixInsight 1.6

 

Reworked with histograms, cloned the image and repeated the histogram up to 5 times, and merged as HDR using the HDR function of PI, used some curves and mask to process after that.

Done