It has two major tasks, as an imager from 0.6 to 5 micron wavelength, and as a wavefront sensor to keep the 18-section mirrors functioning as one.[1][2] In other words, it is a camera and is also used to provide information to align the 18 segments of the primary mirror.[3] It is an infrared camera with ten mercury-cadmium-telluride (HgCdTe) detector arrays, and each array has an array of 2048x2048 pixels.[1][2] The camera has a field of view of 2.2x2.2 arc minutes with an angular resolution of 0.07 arcsec at 2 microns.[1] NIRCam is also equipped with coronagraphs, which helps to collect data on exoplanets near stars.