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Kavasji Naegamvala, also known as Kavasji Dadabhai Naegamvala (1857-1938) (FRAS) was an astrophysicist and the director of the Takhtasingji Observatory. Naegamvala's work included observations of nebulae, solar flash spectrum, and the transit of Mercury on 9 May 1891. He joined the British Astronomical Association expedition to Norway, in 1896, to observe a total solar eclipse. His independently organized, and conducted, expedition to Jeur, in western India, to observe the solar chromosphere and corona, during the 1898 eclipse, broke a psychological barrier to the entry of Indian scientists to the study of astronomy.

Narayana Ayyar was an Indian astronomer at the Kodaikanal Solar Observatory, contributing significantly to solar research, particularly in sunspots and solar magnetic fields. Established in 1899, the observatory has played a vital role in advancing solar physics in India and globally, enriching our understanding of solar activity.