DIY Autofocus

[Llamanaut]

Anyone had a go at making an auto-focusser? The one where you can eliminate scope shake by getting a motor to focus at the push of a button?

[beamish]

Yup !

made one of these, quite easy too

Homemade Electric Telescope Focuser

[Llamanaut]

cheers karlo, i'll have a good look at that

[Abernus]

I have made one as well based on the above, I am just working on a guide atm. I will post once it's uploaded.

[Rob1961]

I made one up last Summer - the servo was from a car model shop - it was about £9 and the other electronics were from Maplins. I hit a stumbling block with the drive belt from the motor to the focusser on a 127mm Skywatcher Mak - either no movement or massive slippage. I ended up using a drawer knob (£2) with the centre drilled out to fit over the focusser - 22mm is spot on with the rubber cover remaining on the focusser knob. The electronics fitted in a small sandwich box from a £1 shop.