Performance and validation of a suborbital FUV spatial heterodyne spectro-polarimeter optimized for wide-field observations of interplanetary hydrogen

The HYdrogen Polarimetric Explorer (HYPE) is a sounding rocket experiment designed to obtained spectro-polarimetric measurements of diffuse ultraviolet astrophysical objects at high resolving power. HYPE consists of a spatial heterodyne spectrometer and a diamond Brewster - LiF half wave polarimeter and is optimized for study of solar scattering from interplanetary hydrogen penetrating the solar system. We report on the calibration and performance of HYPE in preparation for a first flight of the experiment.