I see that people are able to use Envi for CRISM analysis but I would prefer to use ERDAS as this is what my course has provided. The CRISM data appears to download as .img files and when I view these in ERDAS it says there are no bands in the information. Other systems, such as Jmars or PlanetServer don't meet my needs as I need to crop and buffer the data later in ArcGIS. When I search the problem "analysing CRISM data" the search brings me back to these systems. Can anyone give me advice on CRISM in ERDAS or point me in the direction of materials?