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Motorised focuser
Around US$500 seems an awful lot of money when you can buy the Oz$99 SkyWatcher device that does the same thing.
I fitted one to my TSA120 and it has worked perfectly for some six months now. Very smooth movement but a little slow when racking inwards with a heavy eyepeice but that's no bad thing really. It is battery powered but they have lasted the six month so far.
Try it, it's only a hundred, before you commit to 5/6 times the price.
Mamba
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