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<DIV><FONT face=Arial size=2>Dear list members,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>according to Misell (1978) there are three
conditions for scanning a micrograph of a 2D crystal
optimally.</FONT></DIV>
<DIV><FONT face=Arial size=2>(integral no. of unit cells along at least one side
of the image, integral number of pixels in at least one</FONT></DIV>
<DIV><FONT face=Arial size=2>unit cell vector, at least one unit cell vector
alined with scan)</FONT></DIV>
<DIV><FONT face=Arial size=2>Unfortunately Misell doesn't give a reference and,
in my view, doesn't show it convincingly either.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Does anybody know of a source for these
conditions.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Philip</FONT></DIV></BODY></HTML>