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[[File:Siril_Comparison.png|700px]]
The images above picture the result in Siril using the Histogram Equalization rendering mode. Note the improvement of the signal-to-noise ratio regarding the result given for one frame in the previous [[Siril:Tutorial_preprocessing|step]] (take a look to the sigma value). The increase in SNR is of <math>38/3.9 =  9.7 \approx \sqrt{119} = 10.9</math>

Revision as of 23:51, 27 October 2014

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Message definition (Siril:Tutorial stacking)
The images above picture the result in Siril using the Auto-Stretch rendering mode. Note the improvement of the signal-to-noise ratio regarding the result given for one frame in the previous [[Siril:Tutorial_preprocessing|step]] (take a look to the sigma value). The increase in SNR is of <math>21/5.1 =  4.11 \approx \sqrt{12} = 3.46</math> and you should try to improve this result adjusting <math>\sigma_{low}</math> and <math>\sigma_{high}</math>.

The images above picture the result in Siril using the Histogram Equalization rendering mode. Note the improvement of the signal-to-noise ratio regarding the result given for one frame in the previous step (take a look to the sigma value). The increase in SNR is of [math]\displaystyle{ 38/3.9 = 9.7 \approx \sqrt{119} = 10.9 }[/math]

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