THE UNIVERSITY OF WISCONSIN (UW) SPACE SCIENCE AND ENGINEERING CENTER (SSEC) IS REQUESTING GRANT FUNDING FROM NASA LARC TO ENHANCE THE UW-DEVELOPED CLARREO IR PATHFINDER. TWO IMPORTANT BUT MODEST-IN-SCOPE TASKS HAVE BEEN IDENTIFIED THAT WOULD IMPROVE THE TECHNICALPERFORMANCE OF THE UW SSEC CLARREO IR PROTOTYPE WHILE REDUCING THE TECHNICAL AND SCHEDULE RISK FOR FUTURE FLIGHT MISSION(S). THE IR PATHFINDER HAS BEEN ELEVATED TO TRL-6 THROUGH NASA ESTO FUNDING (REVERCOMB 2013A 2013B). THE DEVELOPMENT OF THE CLARREO IR PROTOTYPE CULMINATED IN END-TO-END PERFORMANCE TESTING UNDER VACUUM AND UNDER THE EXPECTED ON-ORBIT THERMAL PERTURBATIONS WHERE THE REQUIRED CLARREO IR RADIOMETRIC PERFORMANCE REQUIREMENT OF 0.1K (K-3) WAS SUCCESSFULLY DEMONSTRATED. THE FIRST PROPOSED TASK IS TO INTEGRATE THE HARVARD UNIVERSITY DEVELOPED QUANTUM CASCADE LASER (QCL) INTO THE IR PATHFINDER IN A FLIGHT-LIKE CONFIGURATION AND DEMONSTRATE MEASUREMENTS OF INSTRUMENT LINE SHAPE AND BLACKBODY EMISSIVITY. HARVARD ELEVATED THE QCL FOR MAKING THESE MEASUREMENTS TO TRL-6 UNDER ESTO FUNDING USING THEIR CALIBRATED FTS INSTRUMENT. IN PREVIOUSLY FUNDED WORK AT UW THESE MEASUREMENTS HAVE BEEN CONDUCTED WITH THE IR PROTOTYPE USING A LABORATORY GRADE LASER AND TEMPORARY FIXTURES FOR COUPLING TO THE INSTRUMENT. THE PROPOSED WORK WILL USE A FLIGHT-LIKE LASER (THE QCL) INTEGRATED INTO THE IR PATHFINDER OPTICAL SYSTEM IN A FLIGHT-LIKE CONFIGURATION. THE SECOND PROPOSED TASK IS TO DEMONSTRATE ENHANCED BLACKBODY EMISSIVITY OUT TO 50 MICRONS BY DOPING AEROGLAZE Z306 PAINT WITH GRAPHENE NANO-PLATELETS. CURRENTLY THE REQUIRED EMISSIVITY OF 0.998 IS MET ONLY OUT TO 25 MICRONS.