basic sanity check: do we see the source where expected?
<center>
<a href="beam.eps"><img src="beam.gif"></a>
<a href="scanflux.eps"><img src="scanflux.gif"></a>
</center>
<hr>

finally, we got the basic orientation right:
<center>
<a href="track.eps"><img src="track.gif"></a>
</center>
<hr>

... but there still are some problems with roatation:
<center>
<a href="rotation75.eps"><img src="rotation75.gif"></a>
<a href="rotation.eps"><img src="rotation.gif"></a>
<a href="relative.eps"><img src="relative.gif"></a>
</center>
<hr>

trying to find the exact nature of the problem:
<center>
<a href="angles.eps"><img src="angles.gif"></a>
</center>