CAS500-2 is the second of two similar South Korean Earth observation satellites. These spacecraft feature the AEISS-C imaging system with a ground resolution of 0.5 m in panchromatic mode and 2 m in color mode. CAS500-4 is a wide area Earth-observation satellite with a wide-area electro-optical camera (swath width of 120 km and resolution of 5 m) to be mainly used by the Rural Development Administration and the Korea Forest Service for observing crops, agricultural water resources and forest resources.