The high-resolution colour camera on Resourcesat-1, 2 and 2A. It sees details of about 5.8 m in three bands and can be turned sideways to revisit a place every five days.
LISS-IV images the ground in three bands, green, red and near-infrared, at about 5.8 m resolution.
The camera uses a three-mirror telescope and a line of 12,288 detectors for each band. A prism splits the light so that each band falls on its own detector line.
The whole camera sits on a platform that can tilt up to 26° to either side of the track. By leaning sideways the satellite can look at the same place again after five days, instead of waiting for the 24-day orbit cycle.
It has two modes. In multispectral mode it sends all three bands. In mono mode it sends a single band over the full width.
On Resourcesat-1 (2003) the multispectral strip was about 23.9 km wide. Resourcesat-2 (2011) widened it to 70 km and improved the data from 7-bit to 10-bit. Resourcesat-2A (2016) carries the same camera.