Division by zero warning in sea.py
/home/bacon/Soft/python/mpdaf/lib/mpdaf/sdetect/sea.py:368: RuntimeWarning: divide by zero encountered in true_divide newvar = np.nansum(psf, axis=(1, 2)) / d
/home/bacon/Soft/python/mpdaf/lib/mpdaf/sdetect/sea.py:368: RuntimeWarning: divide by zero encountered in true_divide newvar = np.nansum(psf, axis=(1, 2)) / d