Before I put my diode in it's holder, I would like to know if anyone can tell me how I should put the diode such that the axis with the biggest divergence (fast axis???) is horizontal.
The thing is that once the diodes are in the case it is most of the time difficult to rotate or remove them again. (unless Dave's holders don't have that problem).
The reason why I want the widest axis horizontal is because the correction optics I have lying around are glued to their holder.