Calibration method for the optical system of infrared CMOS-theodolite in astronomical measurement
The all-day astronomical measurement system, which integrates a theodolite with an infrared sensor, offers substantial advantages in miniaturization, automation, speed, measurement accuracy, and efficiency, enabling comprehensive all-day astronomical observations. High-precision instrument calibration is a core prerequisite for obtaining accurate astronomical measurement results, which directly determines the reliability and effectiveness of the system’s observation data. How
Researchers have developed a new calibration method for an infrared CMOS-theodolite system designed for all-day astronomical measurements. Existing calibration techniques are insufficient due to the system's removed eyepiece, narrow field of view, and low-resolution sensor. The novel approach uses the theodolite's angle data and a two-face measurement strategy to determine key optical parameters. This method has demonstrated its ability to achieve stable and precise calibration, crucial for accurate astronomical data collection.
This advancement is significant because it enables more accurate and reliable astronomical measurements, even in challenging conditions, potentially improving our understanding of celestial objects and phenomena.
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