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So do you just remove both filters and dont put anything back in there place? Leave the sensor open to dust etc?
And how is the focusing with lenses affected? I image mainly with a refractor but will do some widefield with lenses occasionally.
And how do you manage if you do a Ha narrowband exposure. Do you still need an ir filter with a ha filter? If so how do you get both filters installed between scope, focal reducer / flattener and camera?
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