Jia-Jia Wu

Slit-referenced auto-guiding system for the spectrograph of the SiTian Pilot-Node Telescope

Long-exposure spectroscopic observations require the target to remain accurately aligned with the center of the spectrograph slit throughout the exposure. Telescope tracking errors, structural flexure, and environmental disturbances can cause slow image drift on the focal plane. This drift reduces slit throughput and d...