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FWIW : My rig is tear down and mono.
If you would like to do NB imaging you will want a mono camera - not sure if there are any here getting success with OSC/NB but it would be painfull I am sure.
Also an automated filter wheel is essential - before I got that it was too much like hard work changing filters lost the focus and guiding and framing and also meant I was having to visit the scope every 30 mins or so all night. Now I have a script driven system (AA4) that can slew to a target, start guiding and the run the LRGB or Ha, Oiii sequences and this is supervised from the lounge beer in hand.......it is more complicated and sometimes causes me grief but works well and knocks the socks of what I was using before (an unmodded 20D), I would like a bigger sensor though - but that is another story....
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