I am trying to do a project to simulate MODIS (NASAS' telescope addon). I have a flir one which helps me replicate the thermal camera but i need also a co2 camera. I know its possible with a ir camera with a 4um filter but my camera apparently works from de 8-15um range which is out. I though maybe another gases just to simulate but i cant find anything. Not even a 14um filter or something like that. Got any ideas? Thanks!