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Hello all!

I just installed this Lacerta 1:10 Micro Transmission focuser on my 8” Skywatcher Dobsonian. It is a direct replacement for the stock focuser and works extremely well. I was surprised at how easy it was to install! Ordered it from 365Astronomy and got fast shipping.

 

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Hi Greg,

I have used one of these in the past, and they are a very fine addition, easily fitted as you say, and at little cost.

 

clear skies:smiley:

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Have it on my dob as well - made quite of difference.

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It is geared so that it takes multiple turns of the micro focuser to rotate the "normal" focuser knob once. Usually the ratio is around the 10:1 mark. This gives you finer focus control. Faster focal ratio telescopes and shorter focal length eyepieces or astrophotographers benefit most from the addition. 

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44 minutes ago, A_N_other_beginner said:

Newbie question that Google hasn't helped answer - what is a micro-focuser, and how does it help?

It allows for "fine tuning" of the focuser.

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I wanted one, and was scared to take my focusser apart, they are also reasonably costly and I kept missing out on the sales of secondhand Lacerta's on SGL so I went for this option for fine control IMG_4112a.jpg

 

As you can see it's just a big knob that my Bro made for me on his lathe from a block of metal, but although it isn't as good as the Lacerta might be it certainly gives me better control than I had previously

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