Not being able to find a focuser I wanted for my Esprit 120, that came off instantly

[Ukastronomer (Jeremy)]

Not being able to find a focuser I wanted for my Esprit 120, that came off instantly and went on instantly I decided to make one. I did not want one that was permanently engaged with the scope. Also I refuse to spend £200+

I bought another Skywatcher electronic focuser, a piece of 3mm alloy bar and a 2.5” by 6” round bar.

I won't go into detail as I have taken photographs, what amazed me was the final luck when I attached the vacuum cleaner drive belt it fitted 100% and I had NOT measured at any stage for it to.

The knob attached to the motor has TWO grub screw holes, 3mm which is why the other holes are offset.

I am NOT an engineer as you can see but have enjoyed this. Took a day

The good thing is that the whole unit can easily be swapped over to the other side of the scopes focuser

[xelasnave]

Only engineers have a tap and die set ☺

I like what you have done.

You know I pulled the remote vacuum cleaner apart and an old printer to find a belt but nothing.

The mouse matt works ok...I have been using my focuser set up inspired by your good self and it works great..it only has to move a rotation or two....There is a knack to using it as it reaches focus and then pulls back a little which works out real handy.
Nice work and I hope you get to use it in the field at some stage.
Alex

[Ukastronomer (Jeremy)]

Originally Posted by xelasnave

Only engineers have a tap and die set ☺

I like what you have done.

You know I pulled the remote vacuum cleaner apart and an old printer to find a belt but nothing.

The mouse matt works ok...I have been using my focuser set up inspired by your good self and it works great..it only has to move a rotation or two....There is a knack to using it as it reaches focus and then pulls back a little which works out real handy.
Nice work and I hope you get to use it in the field at some stage.
Alex

Thanks


Years ago someone threw out a Henry cleaner, I took it in, the ONLY fault was where the welded on plug had over time caused a brake in the wire inside the cable, new plug and it lasted me TEN years

[Sunfish (Ray)]

Good work.