The build quality and general solidity of the new Atik EFW2 motorized USB filter wheel is very impressive! The case is milled from a solid aluminium block, the filter disk is sturdy and the motor selected for long-term reliability.
With exchangeable filter disks and large 54mm apertures on both sides the EFW2 can easily support sensors up to full frame (35mm) format. Atik cameras screw flush onto the wheel and will rotate without an additional adapter. Total extra backfocus required is only 22mm.
The new Atik Off Axis Guider fits directly to the Atik EFW2 Motorized filter wheel.
Features a moving prism to enable selection of the best quality stars within the corrected field of view, while maintaining the ability to use sensor sizes up to full-frame 35mm and a silky-smooth helical fine-focus mechanism with three extension rings enables a range of cameras and autoguiders to reach focus.