[论文解读] 70 years of spectroscopy of the photosphere and the solar chromosphere at the Pic du Midi Observatory (1956-2026)

Jean-Marie Malherbe|arXiv (Cornell University)|Feb 24, 2026

Solar and Space Plasma Dynamics被引用 0

一句话总结

简要直述：该论文提供了皮克尔居里天文台对日心太阳光谱学七十年的历史回顾，强调用于观测光球、色球和日冕的专用仪器、穹顶与分光仪的发展。

ABSTRACT

Observations of the solar corona at the Pic du Midi began with Bernard Lyot and his spectro coronagraph installed on the multi-purpose equatorial mount of the Baillaud cupola. It was not until 1956 that domes and instruments specifically dedicated to observations of the photosphere and the solar chromosphere appeared. On the occasion of the International Geophysical Year, a solar spectroscopy laboratory was created to the west of the Pic du Midi, based on two spectrographs of 4 m and 9 m focal length. In 1961 the turret dome appeared to the east of the Pic, later equipped with an 8 m spectrograph. Around 1965, the Baillaud dome finally specialized in the corona with a new table and new spectrographs. At the same time, a revolution in infrastructure took place at the Pic in a few years, which we present as well as the solar spectrographs and their goal.

研究动机与目标

• Document the historical development of solar spectroscopy at the Pic du Midi Observatory.
• Describe the infrastructure and instrument evolution dedicated to photosphere, chromosphere, and corona observations.
• Highlight key milestones in spectrograph technology and observatory reorganization.
• Explain how changes aligned with the International Geophysical Year and subsequent solar studies.

提出的方法

• Historical narrative compiling the timeline of equipment and observatories at Pic du Midi.
• Description of spectrographs with 4 m, 9 m focal length, and later 8 m instruments.
• Discussion of dome architecture changes and their impact on solar observations.
• Relation of instrumentation upgrades to solar spectroscopy goals (photosphere, chromosphere, corona).
• Synthesis of the organizational and infrastructural changes that accompanied instrument upgrades.

实验结果

研究问题

• RQ1 What are the major milestones in the instrumentation of solar spectroscopy at Pic du Midi from 1956 to 2026?
• RQ2 How did dome design and spectrograph upgrades influence observations of the photosphere, chromosphere, and corona?
• RQ3 What role did international collaborations and events (e.g., International Geophysical Year) play in shaping the observatory’s solar spectroscopy program?
• RQ4 How did the Pic du Midi infrastructure evolve to support advancing solar spectral studies?

主要发现

• The Pic du Midi solar program evolved from early coronagraph observations to dedicated photosphere and chromosphere spectroscopy starting in 1956.
• A solar spectroscopy laboratory was created near the observatory for IGY-era work, supported by 4 m and 9 m focal-length spectrographs.
• A turret dome and an 8 m spectrograph were added to broaden observational capabilities around 1961 and beyond.
• The Baillaud dome was repurposed to specialize in corona observations with updated instrumentation.
• Major infrastructural changes accompanied a revolution in solar spectroscopic capabilities in the ensuing years.
• The paper documents a coherent narrative of how instrumentation, domes, and laboratory spaces collectively advanced solar spectroscopy at Pic du Midi.