The books of S. Balachandra Rao might be helpful for starting out in this challenging field.

Rao, S. Balachandra. 1998. Indian Mathematics and Astronomy: Some Landmarks. 2 rev. ed. Bangalore: Jnana Deep Publications.
Rao, S. Balachandra. 2000. Ancient Indian Astronomy. Planetary Positions and Eclipses. Delhi: B. R. Publishing Corporation. https://doi.org/10.5281/zenodo.8419417.
Rao, S. Balachandra. 2000. Indian Astronomy: An Introduction. Hyderabad etc.: Universities Press.
Rao, S. Balachandra. 2015. Indian Astronomy: Concepts and Procedures. Mumbai: Nehru Centre. (" an inclusive and more comprehensive sequel to my earlier titles")

perhaps more via worldcat.

Best,

Dominik

On Tue, 31 Oct 2023 at 11:02, James Hegarty via INDOLOGY <indology@list.indology.info> wrote:

Dear Colleagues,

I am trying to find my way into this unfamiliar field and would appreciate any suggestions (of primary or secondary sources).

Greetings from a somewhat wet Wales.

Best,

James Hegarty
Cardiff University

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