Warm front chase in north central Illinois on June 22, documenting three EF-1 tornadoes on a messy line of HP supercells and an incredible cloud to ground lightning barrage.
Demonstrating the magnitude of focus error for various lenses. The NV specific lenses exhibit the greatest focus error while the CCTV lenses showed the least. Environmental Light Source: Cloud Reflected HP Sodium Vapor Introduced Light Source: 447nm (Blue) Laser Illuminator Video Capture Equipment Used: 1 x Photonis XP6 (NTENS) Image Intensifier P22 Phosphor
SNR – 32.8
Resolution – 70lp/mm
Luminance Gain – 17310 cd/m^2/lx ~ 54353 fL/fc
EBI – .18 µlx ~ 1.8 x 10^-11 phot 1 x Samsung NX Mini Camera 1 x Litton 0.667x Relay Lens P/N 206812-100 Photonis SHD3 Photonis XD4 Photonis XH72 Photonis XR5 Photonos XP6 Night Vision Image Intensifier L3 Night Vision ITT Night Vision Harris Night Vision Exelis Night Vision DEP Night Vision Photonis Night Vision INTENS AN/PVS-14