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A problem I sometimes seem to run into is not finding a guide star when looking at deep sky objects where no other star is in site. This especially happens with long focal length guidescopes. Longer focal length does give more accurate tracking but you need a more sensitive camera.
I am thinking of mounting 2 guide scopes at slightly different angles in the hope that maybe 1 has a guide star in its FOV.
Has anyone tried this before?
John.
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