Thread: [WITHDRAWN] Final price drop: Astronomik T-thread 12nm OIII, SII filters
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  #3  
Old 29-07-2016, 12:08 PM
furgle (Adam)
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Join Date: Feb 2016
Location: Brisbane
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A T2 or T-mount or T-thread has a width of 42mm with a thread pitch of 0.75mm.