View Instrument

Instrument Type: imager, Operational Mode: crosstrack, Collection Type: pushbroom, Other Information: The OMPS consists of two sensors, a nadir sensor and a limb sensor. The nadir sensor uses a wide field-of-view pushbroom telescope to feed two separate spectrometers. The nadir total column spectrometer (mapper) measures the scene radiance between 300 to 380 nanometer (nm) with a resolution of 1 nm sampled at 0.42 nm and a 24-hour ground revisit time. Measurements from this spectrometer are used to generate total column ozone data with better than 50 x 50 kilometer (km) resolution at nadir. The nadir profile spectrometer measures between 250 and 310 nm with the same spectral sampling, in a single ground pixel of 250 x 250 km. The limb sensor measures the along-track limb scattered solar radiance with 1 km vertical sampling in the spectral range of 290 to 1000 nm. Three vertical slits sample the limb at 250 km cross-track intervals to provide for better than 7-day ground revisit times. The three slits are imaged onto a single charge-coupled device (CCD) (identical to both nadir CCDs).