I cannot confirm your report that larger images do not do the convolution to different gaussians - I only tried a simple 1 field 3 widths and that worked as planned. I will e-mail $QOOP/QCLEAN.FOR, $HLPFIL/IMAGR.HLP, $QPGOOP/IMAGR.FOR in 3 e-mails. cp these to the right places COMRPL $QOOP/QCLEAN COMLNK $QPGOOP/IMAGR Eric