First time posting on this forum. I recently purchased a new GSO based 200mmF5 Reflector and I am waiting on a new EQ mount. Planning to use my M6ii at a later stage but as planning on visual for the first 6 months or so. I note that it comes with a 35mm extension for optical use. Do I still use this when using a 1.25inch x2 barlow ? They both raise it 35mm for focusing I assume. As a trivial side note the dust cap was difficult to take off and now I cant get it back on fully. Do peeps just file the nibs down ?
Thanks and looking forward to spending some time on this forum.