New Horizons Linear Etalon Imaging Spectral Array (LEISA) Pluto Cruise Raw Data, Version 1.0

This collection contains a set of raw images in .FIT format for the New Horizons Linear Etalon Imaging Spectral Array (LEISA) instrument during the PLUTO CRUISE mission phase. LEISA is an infrared imaging spectrometer. The two-dimensional (2-D) detector is a 256x256-pixel array. Spectral separation is done with a wedged optical etalon filter, which comprises high (2.1-2.25 micron) and low (1.25-2.5 micron) spectral resolution segments. The optics and filter arrangement configure one detector dimension as spatial at constant wavelength and the other dimension as both spectral and spatial. Multiple frames (images) may be taken in sequence, while scanning the Field Of View (FOV) in the spatial+spectral dimension, such that each pixel-sized piece of the observed target will be observed at all wavelengths across multiple frames. The resulting data products in this data set are three-dimensional image cubes, which dimensions are spatial, spatial+spectral, and spatial+time and which shall be convolved into spatial, spatial, and spectral image cubes at a later date. Activities in this included calibration observations using Vega and Arcturus as targets, as well as observations of the Sun in the Solar Illumination Assembly. These data were migrated from the PDS3 dataset: NH-X-LEISA-2-PLUTOCRUISE-V1.0. Labels were redesigned during migration using the .FIT header and PDS3 .LBL files, but the data files are unchanged from their PDS3 version.