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I have temp compensation on both scopes fitted with robo focus and it is a real pain to get the focus slope set correctly and the temp sensor is not on the focuser but mounted in the bottom of the control box. It is a lot easier to run focus max at the start of your imaging, get a couple of good V curves and use it during your session. It seems a lot more accurate and an auto focus takes about 28 seconds using Maxim and focus max with robofocus. I think I would also stick with the Al tube as the CF in this case is expensive and somewhat of a gimmick. Looks good but serves no real purpose.
Please don't argue about this statement, just my thoughts and what I would do. By the way Robofocus is only $500 at the moment and a second motor is about $132.
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