CONV NORM
# 9x9 convolution mask of a mexican-hat for images with FWHM~4.0 pixels.
-0.002250 -0.007092 -0.015640 -0.024467 -0.028187 -0.024467 -0.015640 -0.007092 -0.002250 
-0.007092 -0.021141 -0.041403 -0.054742 -0.057388 -0.054742 -0.041403 -0.021141 -0.007092 
-0.015640 -0.041403 -0.057494 -0.024939 0.008058 -0.024939 -0.057494 -0.041403 -0.015640 
-0.024467 -0.054742 -0.024939 0.145167 0.271470 0.145167 -0.024939 -0.054742 -0.024467 
-0.028187 -0.057388 0.008058 0.271470 0.459236 0.271470 0.008058 -0.057388 -0.028187 
-0.024467 -0.054742 -0.024939 0.145167 0.271470 0.145167 -0.024939 -0.054742 -0.024467 
-0.015640 -0.041403 -0.057494 -0.024939 0.008058 -0.024939 -0.057494 -0.041403 -0.015640 
-0.007092 -0.021141 -0.041403 -0.054742 -0.057388 -0.054742 -0.041403 -0.021141 -0.007092 
-0.002250 -0.007092 -0.015640 -0.024467 -0.028187 -0.024467 -0.015640 -0.007092 -0.002250