Design and performance characterization of H-band MCT camera: insights from pixel-level gain measurements
Infrared astronomical equipment is pivotal in advancing our understanding of the universe, particularly through ground-based observations, which remain the primary mode of astronomical study. In this paper, we introduce the development and performance characterization of an H-band Mercury Cadmium Te...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2025-08-01
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| Series: | Frontiers in Astronomy and Space Sciences |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fspas.2025.1617581/full |
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| Summary: | Infrared astronomical equipment is pivotal in advancing our understanding of the universe, particularly through ground-based observations, which remain the primary mode of astronomical study. In this paper, we introduce the development and performance characterization of an H-band Mercury Cadmium Telluride (MCT) infrared camera designed for astronomical observations. We computed the photon transfer curve (PTC) for each pixel and fitted these curves to derive pixel-level gain. The results reveal a spatial non-uniformity of detector pixel-level gain, which correlates with changes in field of view (FOV). By employing FOV compensation, we achieved more uniform gain distribution. This testing approach allows for a more accurate performance evaluation of scientific-grade astronomical cameras, providing a robust foundation for subsequent astronomical image analysis and benefiting the field of infrared astronomy. |
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| ISSN: | 2296-987X |