Quote:
Originally Posted by Trido
How hard is it to mate a Dob with a GEM?
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Easy if the mirror cell holds the mirror in place irrespective of the orientation of the tube or how it rotates. Some sling types don't .... DANGER!!!.
If the mirror cell is pretty basic ,and lots are, the mirror glued to a bit of plywood or particle-board, it'll be OK.
Better mirror cells give better support and better mirror ventilation.
If the mirror his held firmly in all orientations then all you need dovetail bar to suit the GEM and tube rings to hold the tube and hey presto dob becomes a equatorial (GEM) mounted newtonian and suddenly you can lots of cleavour things (like deep space imaging with exposures).