Hawkeye
Hawkeye Combination Cloud Particle Probe

The Hawkeye Combination Cloud Particle Probe is an in situ airborne combination probe developed by SPEC, Inc. It was originally developed to be flown on NASA’s Global Hawk Uncrewed Aerial Vehicle (UAV). Hawkeye consists of four probes: the Fast Cloud Droplet Probe (FCDP), a 10-micron channel 2D-S Probe, a 50-micron channel 2D-S Probe, and a Cloud Particle Imager (CPI). Hawkeye provides imagery of cloud particles and measurements of particle size distribution and particle concentration. The FDCP has a size range of 1.5 to 50 μm and a resolution of 3 μm. The 10-micron channel 2D-S probe has a size range of 10 to 1280 μm, while the 50-micron channel 2D-S has a size range of 50 to 6400 μm. The CPI has a resolution of 2.3 μm, a size range of 2.3 to 2300 μm, and a frame rate of up to 400 frames per second.