Focuser orientation...Which way?

Getting ready to put my focuser on the upper cage and wondered which way the orientation should be. What are some of the Pros and Cons for the focuser to be installed either the knob ends running the length of the scope or knob ends running the width of the scope? I have only used the first method mentioned.

Thanks,

Tim Hornbeck

Hi Tim. First word of advice: it's your scope, and that's what's so great about making your own, you can make it any way you want, no right or wrong.

In my case I was planning on doing mine with the knobs in line with the tube's optical axis, but once I got to mounting it, I changed my mind and am now doing it perpendicular to the optical axis (what you called width-wise).

My reasoning was that my focuser is close to the bottom ring and when in the first orientation the bottom knob is too close to the ring to make it comfortable. Actually both hover above the focuser board and you can't really get your whole finger or thumb under it. But the situation is fixed by putting it perpendicular since the knobs both hang over the ends of the focuser board if you follow, and there is plenty of room on both knobs to get your fingers all the way around.

I suppose a good ergonomic compromise is to do it at 45*...maybe you can consider that, since on average your scope will be pointed at 45 (more than at zenith or horizon anyway) and at that position the knob's axis would be parallel to the ground (ie. straight). Both of the other two orientations would be tilted at that common angle.

Experiment with what works for you ergonomically and if it's unique, then all the better, or if you are happier with the 'feel' of one over the other just go for it. Are you perchance thinking of a feather touch? They rotate and you can change it at will. Just make it usable and comfortable for YOU and enjoy.

All the best,
TomL