Quote:
Originally Posted by Paul Haese
There are a number which fit the bill Glen. The Feather Touch is the most affordable and robust but does take up a lot of back focus. I wouldn't use a standard Moonlite, they just don't have the strength to hold heavy loads still. Second on my list is the Atlas, great focuser but costs a fair bit and has a very shallow draw tube which can cause problems for adapter calculation. Then there is the Moonlite Nitecrawler; also a great focuser and has the added feature of rotation. That costs even more but if you need accurate rotation this is the focuser of preference in my opinion. Draw tube length is modest but longer than 10mm. Very happy with this focuser.
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A good list with great explanations. I would also add Optec - these focusers seem to be even more robust that FTF, in particular in regards to the way these focusers are motorised, and there are a few options to choose from, from Optec LEO to Gemini.