William Optics 4" Rack & Pinion Focuser

[Luke Bellani]

Hi,
I bought this beautiful focuser a few years ago to upgrade one of my scopes but never got around to doing it.

It's brand new and too good to be sitting around in its box so I decided to sell it.

I have no idea what it would cost to buy today but I'll be happy to sell it for $350. This is a bargain for this focuser.

It is the same focuser as on my WO FLT132 scope.
I don't think you can actually buy it on its own these days.

It includes a 10:1 ratio knob as well as a thermometer on the other knob and a micrometre display.

The item is located in Ringwood, Victoria.

I would prefer local pickup but I will ship it if buyer pays for the postage.
It's quite heavy.

If interested, please call 0409 001 929 to discuss.

Thanks for looking
Cheers,
Luke

[Max Vondel]

Do you have any information on the flange that attaches to the telescope?
Diameter, thread etc?
THX

[Luke Bellani]

Hi,
The focuser attaches to the body of the scope by sliding over an adaptor and is secured by 3 grub screws as can be seen in the photos.

The grub screws would locate in a groove to allow the focuser to rotate and is then secured via the knurled screw.

The inside diameter of the focuser body is 102.5mm and the outside diameter of the focuser tube is 90mm.

Thank you for your interest.
Cheers,
Luke