Diviner calibration

AbstractThis paper describes the methods to calbrate LRO's Diviner Lunar Radiometer Experiment. Like many radiometers, Diviner is sensitive to instrument temperature changes along the orbit of LRO. Regularly executed calibration blocks include instrument pointings to space and towards internal blackbodies at a known temperature. Data from these blocks serve to determine current offsets and current DN to radiance conversion value. A ground calibration campaign served to determine conversion tables over temperature.

General idea

a.k.a. the elevator pitch:

  1. 1.

    In regular intervals, Diviner looks at space, to define the counts for zero radiation, defining a \(counts_{space}\) with an error \(\sigma_{space}\).

  2. 2.

    Around the same time the instrument also points at an internal blackbody source at a measured temperature, defining a \(counts_{BB}\left(T_{BB}\right)\) with errors of \(\sigma_{sensor}\) and