View Instrument

Instrument Type: imager, Operational Mode: crosstrack, Collection Type: whiskbroom, Other Information: VIIRS uses a rotating telescope to image the earth, deep space, and two calibration sources. The limits of the field of regard are at +/-56.06 degrees, covering a swath width of 3040km. Each complete scan takes 1.7864 seconds, with the earth scanning portion taking 0.55 seconds. VIIRS employs 4 Focal Plane Assemblies (FPA) to hold 21 spectral bands plus one Day-Night Band (DNB), a high sensitivity, large dynamic range, visible panchromatic band. The DNB and 16 M bands have moderate resolution of 740m at nadir, while the 5 I imagery bands have a resolution of 340m at nadir. The visible and near infrared (VISNIR) FPA has 9 bands with central wavelengths between 412 nm and 865 nm. The shortwave and midwave infrared (SWMWIR) FPA has 8 bands with central wavelengths between 1.24 um and 4.05 um. The long-wave infrared (LWIR) FPA has 4 bands with central wavelengths between 8.55 um and 12 um. The DNB FPA shares the same optical focal plane as the VISNIR, and the DNB has a central wavelength of 700 nm.