The True-Technology supaslim manual filter wheel features a low profile 21mm thick body, a smooth action with adjustable tension and a neat system that allows quick access to the filter disk without disturbing the camera or telescope.

This new premium-quality USB filter from Starlight Xpress is unique in that it does not require a separate power supply when used with USB control - the high performance DC gear-motor 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 Atik Electronic Filter Wheel provides motorized filter changes and a USB interface which enables computer control via a stand-alone program or ASCOM.