You could always use the 'unknown' sensor. What you need are the spectral response files from the sensor. These need to be built into ENVI spectral libraries that look similar to those in the \filt_func directory of the ENVI installation. There is a tech tip that has a filter function in ENVI .sli format for AVNIR-2 here: http://www.ittvis.com/ser...echtip.asp?ttid=4273 KOMPSAT-2 actually has a filter function in this directory. It is just not listed as a sensor in FLAASH, so you could use unknown MSI and enter the rest of the parameters.