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Peter,
I have a Meade truss Dob. Advantage is it's portability for transporting in a vehicle when disassembled (in your case, collapsed). Also, easier to carry assembled by holding a truss and the base of the scope. Provided you don't intend viewing under a street light or flood lit backyard, I haven't found any problems with stray light. And as yet, haven't needed a shroud to stop dew on the primary.
Only disadvantage is you have to collimate every time you move the scope but you soon get quick at this. Takes me less than 3 minutes usually.
Regards, Rob.
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