Star Sensor Calibration Using Fine Guidance Sensor Information for Installation Errors

Gao, Jing; Zhang, Yang; Gao, Jingmin; Zhang, Kebei; Feng, Qingjuan; Guo, Miao

doi:10.1088/1742-6596/1971/1/012015

Cited by 3 publications

(1 citation statement)

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“…Furthermore, the FGS can also contribute to the calibration of engineering parameters of the spacecraft in orbit. For instance, it can be used to correct installation errors of star sensors (Gao et al 2021).…”

Section: The Fine Guidance Sensormentioning

confidence: 99%

All-sky Guide Star Catalog for CSST

Feng,

Cao,

Lam

et al. 2024

Res. Astron. Astrophys.

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The China Space Station Telescope (CSST) is a 2-meter space telescope with multiple back-end instruments. The Fine Guidance Sensor (FGS) is an essential subsystem of the CSST Precision Image Stability System (PISS) to ensure the required absolute pointing accuracy and line-of-sight stabilization. In this study, we construct the Main Guide Star Catalog for FGS. To accomplish this, we utilize the information about the FGS and object information from the Gaia Data Release 3. We provide an FGS instrument magnitude and exclude variables, binaries, and high proper motion stars from the catalog to ensure uniform FGS guidance capabilities. Subsequently, we generate a HEALPix index, which provides a hierarchical tessellation of the celestial sphere, and employ the Voronoi algorithm to achieve a homogeneous distribution of stars across the catalog. This distribution ensures adequate coverage and sampling of the sky. The performance of the CSST guide star catalog was assessed by simulating the field of view of the FGS according to the CSST mock survey strategy catalog. The analysis of the results indicates that this catalog provides adequate coverage and accuracy. The catalog’s performance meets the FGS requirements, ensuring the functioning of the FGS and its guidance capabilities.

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Section: The Fine Guidance Sensormentioning

confidence: 99%