Hi all,
On Vincent request, here somes pics of the USB_Focus focuser on my APM 107/100 apo.



I've got the Riccardi reducer/flattener 0.75x, about 1Kg
I'll buy a Moravaian G2-8300 CCD with an external filter wheel and a custom-made extension tube (SkyMeca), about 2Kg
I hope the USB_Focus focuser (external 12v) can move this weight ... :)