20 September 1989 Update On The Low Background IR Calibration Facility At The National Institute Of Standards And Technology (Formerly NBS)
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Abstract
Details will be given about the recently completed facility for the calibration of infrared sources in a low background environment. The basic components of the facility are a large (60cm diameter by 152cm long) stainless steel vacuum chamber housed in a soft-wall cleanroom. A low background environment inside the chamber is achieved by cooling internal cryoshields to temperatures less than 20K using a closed cycle helium refrigerator. Sources of up to 30cm on a side can be inserted into the chamber for calibration. Total radiant power from the blackbodies is measured with an Absolute Cryogenic Radiometer. Plans will be discussed for future enhancement of the system allowing for measurement of spectral and angular distribution of the emitted radiation and possible experiments which could utilize the full capabilities of this system.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. C. Ebner, A. C. Parr, C. C. Hoyt, "Update On The Low Background IR Calibration Facility At The National Institute Of Standards And Technology (Formerly NBS)", Proc. SPIE 1110, Imaging Infrared: Scene Simulation, Modeling, and Real Image Tracking, (20 September 1989); doi: 10.1117/12.960735; https://doi.org/10.1117/12.960735
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KEYWORDS
Receivers

Calibration

Black bodies

Radiometry

Helium

Infrared radiation

Cryogenics

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