The Starlight Instruments BA30FL flat base may be used to mount a 3-inch Feather Touch focuser to the upper cage assembly of a truss tube Dobsonian telescope. Flat base with leveling screws for 3.0" diameter Feather Touch focuser This base threads into our tube adapter ring that comes standard on the 3.0" Feather Touch focuser (A30-1903-1) which has M109x1 threads Base comes complete with all mounting hardware. Mounting hole pattern of 4.0" to center. Outside dimension of base is 4.75" |
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