The FLIR simple “open loop” heated Blackbody for TAU FFC and Gain setup…..
https://www.flir.com/products/285-0029-02_12-v-blackbody-for-gain-cal/?vertical=lwir&segment=oemI will upload pictures of the units interior…. It is very simple to copy
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FLIR’s comment on their 4” “Blackbody”……..
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“Are there any considerations to using FLIR 4-inch blackbody sources?
Blackbody sources offered by FLIR are low-cost uniform temperature sources, and not intended for generating high-precision, highly stable temperatures. The source offered by FLIR is not a true blackbody and is not recommended for any sort of quantitative measurements.
It is a fairly uniform system to assist in performing flat field corrections (FFCs) and lens gain calibration processes with FLIR's OEM camera modules such as Tau2, Quark2, and Boson.
For optimal calibration of Flir Cores, it is recommended to use temperature controlled, high emissivity sources. SBIR and CI Systems offer a range of blackbodies for radiometric calibration, 2-point calibrations, MTF testing, and characterization.
It is important to use 2 blackbody sources instead of 1 in many cases. Waiting for a blackbody to slew in temperature during a lens calibration or 2-point calibration is not recommended and has a negative impact on calibration quality.”
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Fraser