Speaker
Yihan Song
(National Astronomical Observatories, Chinese Academy of Sciences)
Description
LAMOST’s double revolving fiber positioning is vital for efficient spectroscopy, with accuracy requirements of 0.″2. Traditionally, closed-loop control relies on back-illumination at fiber ends, but this study proposes a front-illumination method using focal plane images. It eliminates internal spectrograph lighting, reducing light pollution and avoiding extra photography. An AI model, trained on images of the white ceramic head at the focal plane unit (FPU), accurately measures fiber positions. Tests achieve 0.″13 precision, meeting LAMOST’s standards. The method is compatible with existing control systems, offering seamless integration and improved operational efficiency for large-scale astronomical surveys.
| Affiliation of the submitter | National Astronomical Observatories, Chinese Academy of Sciences |
|---|---|
| Attendance | in-person |
Primary author
Yihan Song
(National Astronomical Observatories, Chinese Academy of Sciences)
