What seems good on paper can miss little things although Hubble was not a design flaw but a spec of paint stuffing up certain references.
I know from being in a dark site stray star light creeps in and maybe that could be a problem up there although working with in another part of the spectrum , maybe it seems inconsequential but they are the things that get you. and besides with out more shielding is does not look like a real scope
Big binos way to go.
alex