Okay, so regular sigma rejection with 1 iteration LNC is faster than no LNC with Linear Fit rejection.
From the statistics of the stack I see a large boost in noise reduction compared to the previous stack ?
HDU1 – NOISE-1 = ‘ 3.27E-04’ / noise level of channel 1
HDU1 – NOISE-2 = ‘ 2.75E-04’ / noise level of channel 2
HDU1 – NOISE-3 = ‘ 4.09E-04’ / noise level of channel 3
HDU1 – SNR-1 = ‘ 1.28E+01’ / Signal to Noise Ratio of channel 1
HDU1 – SNR-2 = ‘ 1.44E+01’ / Signal to Noise Ratio of channel 2
HDU1 – SNR-3 = ‘ 1.45E+01’ / Signal to Noise Ratio of channel 3
HDU1 – medNR-1 = ‘ 8.42E+00’ / median noise reduction, channel 1
HDU1 – medNR-2 = ‘ 8.62E+00’ / median noise reduction, channel 2
HDU1 – medNR-3 = ‘ 8.79E+00’ / median noise reduction, channel 3
HDU1 – medENR-1= ‘ 1.60E+00’ / effective median noise reduction, channel 1
HDU1 – medENR-2= ‘ 1.92E+00’ / effective median noise reduction, channel 2
HDU1 – medENR-3= ‘ 2.86E+00’ / effective median noise reduction, channel 3
HDU1 – refNR-1 = ‘ 8.62E+00’ / reference noise reduction, channel 1
HDU1 – refNR-2 = ‘ 8.77E+00’ / reference noise reduction, channel 2
HDU1 – refNR-3 = ‘ 8.80E+00’ / reference noise reduction, channel 3
HDU1 – refENR-1= ‘ 1.68E+00’ / effective reference noise reduction, channel 1
HDU1 – refENR-2= ‘ 2.04E+00’ / effective reference noise reduction, channel 2
HDU1 – refENR-3= ‘ 2.99E+00’ / effective reference noise reduction, channel 3
HDU1 – LNC-DEG = ‘1st degree LNC’ / Local Normalization Correction degree
HDU1 – LNCRMS-1= ‘ 1.07E-04’ / Local Normalization Correction RMS of channel 1
HDU1 – LNCRMS-2= ‘ 7.28E-05’ / Local Normalization Correction RMS of channel 2
HDU1 – LNCRMS-3= ‘ 8.70E-05’ / Local Normalization Correction RMS of channel 3
HDU1 – LNC-ITER= 1 / Local Normalization Correction iterations
noise reduction has improved from 6,?? to almost 9. So that is a huge improvement, have you noticed this when you compare this stack to the previous stack?
Assuming the old noise reducation was 6,5 and the new one is taken conservatively at 8,5, we have a 8,5/6,5 = 1.3 noise reduction between the stacks. So this stack is 30% less noisy ;-) that’s huge.
The LNC RMS are well below the noise values as well. That is a good sign.