A good reason to have one, (perhaps not a 2")I have a Meade 1.25" flip mirror in my guide scope, guide cam inline with the scope, reticule ep on the other end. flip the mirror, look through the reticule while adjusting the guide rings to find a suitable guide star, line it up on the crosshairs, flip the mirror back, Hey-presto! guide star in the cameras FOV...
Cant complain about that.. Also turns the guide scope into my finder scope when im trying to put a target into the FOV of the main imaging scope.
Handy little item to have. but at around $200.. theres got to be a cheaper way to do it..
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