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• npix_min: minimum number of pixels that pass the "low threshold" cut
• npix_max: maximum number of pixels that pass the "low threshold" cut
• amax_thr: pixel value must be greater than this high threshold to start a peak
• atot_thr: to be considered a peak the sum of all pixels in a peak must be greater than this value
• son_min: required signal-over-noise (where noise region is typically evaluated with radius/dr parameters).  set this to zero to disable the signal-over-noise cut.

All peak finders have a few algorithm-dependent parameters

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