Variable Night Sky Projector

OVERVIEW

Hoffman Engineering’s LM-33-80A is a compact night sky projector system. The unit is calibrated to project four preset levels of Night Sky Illumination (Full Moon, Quarter Moon, Starlight and Overcast).

The unit also has an additional “USER” position that allows for custom levels to be set for unique testing requirements. Internal filters provide a close match to the Spectral Energy Distribution of the Night Sky Spectra. The systems lightweight, compact format makes it an invaluable tool for NVIS evaluations and training. The LM-33-80A, when used with our LM-33-402M (USAF 1951 Medium Resolution Bar Chart), is the ideal choice when performing the MIL-STD-3009 System Level Visual Acuity Test. Calibration Data is supplied in both NVIS Irradiance and NVIS Lux.

NSN: 6920-01-534-7288

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