Starlight Xpress motorized USB filter wheel - 7x 1.25" filters

Starlight Xpress motorized filter wheel for 7x 1.25" filters (M28.5 threaded) - T2 Connection on both sides

The USB filter wheel introduces many new features to a useful imaging accessory. It is unique in that it does not require a separate power supply when used with USB control - the high performance DC gearmotor runs entirely from the USB supply and consumes less than 100mA. It is also capable of operation from a serial input, or from a switched hand controller, both of which power the wheel from a small dry battery.

The wheel is light and slim, with an easy change system of thumbscrews to swap filter disks without tools. A variety of threaded adaptors is available - T thread, SCT thread and Takahashi 72mm thread at the moment. The adaptors can be swapped by using a small screwdriver to release three stainless screws and lifting off the adaptor flange. Each flange can be rotated to any angle before locking down, so that you can orient the wheel and camera into the optimum position.

The wheel is quiet in operation and the Hall-Effect 3 bit encoded positioning gives absolute filter locations (not serially sequential) so you can easily swap between any filters without accidentally losing the wheel position.

An internal view with the cover removed, showing the optional 5 x 48mm filter disk with one filter in place. The USB connector is visible at lower left and the Serial/Manual connector is at the lower right.
Weight: approx. 700 g

Connecting threads:

The filter wheel has T2 (M42x0,75mm)

telescope site - female
camera site - male
When used with the optional hand control SXFWHC (see accessories below) it´s possible to work without a computer. The hand control contains a pack of 4x AAA cells to power the wheel, so no additional USB connection is needed.

Technical drawing