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I have a tri-knob Moonlite focuser on the Mary Rose (1:10 on one side, 1 on the other), and am very very happy with its performance. It has a very smooth motion, and snaps into focus without effort. Most people who have a play with the Mary Rose comment on how comfortable it is to use.
It is at the same time very robust/ solidly built, and so copes with lots of weight, which is a great help when brandishing Terminaglers, Paracorrs and the like.
It is well worth the extra expense in my opinion to get a higher quality focuser. Nothing is more frustrating than a rough focuser that causes the tube to vibrate, or which will not come to a fine focus without a lot of effort.
Austastronomer's Feathertouch focuser is indeed a treat, and I can understand why he is so emphatic in its praise. I understand it is able to be adjusted with a grub screw to sit at whatever angle you most prefer. That may be something that may appeal to some people.
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