170º 2.5mm CS Lens for ASI178MM, 178MC, & 185MC - LENS-2.5

This ZWO 2.5mm C-type lens produces a nearly 170-degree field of view and works well as an all-sky camera when used in conjunction with cameras that have a 1/2" sensor, such as the ASI178MM, ASI178MC, and ASI185MC. It's perfect for getting all-sky images of the Milky Way, auroral activity, and meteor showers. The wide-angle fisheye design enables extreme wide-field astrophotography with minimal vignetting on compatible ZWO cameras.