The Naval Research Laboratory has built five UV spectrographs for the Air Force Defense Meteorological Satellite Program. These sensors, known as the Special Sensor UV Limb Imager, will provide limb observation of airglow emissions from 75 to 750 km over the spectral range of 800 to 1700 angstroms. Each spectrograph employs an imaging detector with a micro-channel plate intensifier and a wedge and strip anode. The detectors are windowless and require a hermetically sealed door mechanisms to prevent water vapor from destroying the Cesium Iodide photocathode. Although the first of these sensors will not be launched until 2001, they are being maintained for flight readiness at NRL. An ongoing effort at NRL is to determine the senor deficiencies and investigate possible improvements. Since the performance of the spectrograph is strongly dependent on the quality of the detector, NRL has identified the refurbishment of the detector as the highest priority to improve the overall capabilities of the sensor. The goals of the refurbishment was to improve the detector imaging quality, counting efficiency, resolution, background uniformity, long term vacuum storage, and serviceability.