Quote:
Originally Posted by Satchmo
Yes , I thought the high profile puts more load on the rear of the cell which looks fairly thin. Experiments with silicon always have to be carefully monitored. If you are not getting nice round extra focal rings at high power you may be compromising resolution on your images.
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Hi Mark
I initially started off with an 18mm backplate, but then changed to the 12mm as the load is widely distributed and not concentrated. Moreover, the mirror weighs only 2kg's so the backplate remains stiff even at 12mm.
with the redesigned cell however, I'll be using 18mm ply and the support points will only be around 5mm from the backplate against the current 30mm or so.
since my primary interest is DSO imaging, would it make much of a difference as opposed to high power planetary imaging?