MICROWAVE KINETIC INDUCTANCE DETECTORS OR MKIDS HAVE PROVEN TO BE A POWERFUL AND HIGHLY MULTIPLEXABLE TECHNOLOGY FOR ENERGYRESOLVED PHOTON COUNTING FROM THE NEAR-IR THROUGH X-RAY. THIS PROPOSED INVESTIGATION BUILDS ON PREVIOUS ROSES-APRA WORK TAKING THE NEWLY DEVELOPED TITANIUM NITRIDE OPTICAL LUMPED ELEMENT (OLE) MKIDS AND SCALING THEM TO MUCH LARGER ARRAYS WHILEIMPROVING ENERGY RESOLUTION DETECTOR EFFICIENCY AND UNIFORMITY SIGNIFICANTLY. AT THE END OF THE INVESTIGATION WE HOPE TO DEMONSTRATE A SCIENCE GRADE ARRAY WITH 50 000 PIXELS AN ENERGY RESOLUTION R>60 AT 400 NM AND A DETECTOR EFFICIENCY OF OVER 70%. THIS ARRAY WOULD BE VERY USEFUL FOR MANY SCIENCE APPLICATIONS SUCH AS NEXT-GENERATION CORONAGRAPHIC PLANET FINDING STUDIES IN HIGH REDSHIFT GALAXY FORMATION AND SPACE ASTROPHYSICS IN THE UV. THIS DEVELOPMENT IS AN IMPORTANT STEP TOWARDS THE LONG-TERM GOAL OF SCALING THE TECHNOLOGY TO MEGAPIXEL ARRAYS.