This document specifies the structure of the Siril Catalog Format, designed to support efficient storage and querying of nested HEALpixel based astronomical catalogs such as Gaia DR3. The format includes a fixed length header, an index for rapid look-up, and structured data records optimized for space and speed. The document also outlines recommended search strategies for utilizing the format effectively.
Cite
@article{arxiv.2501.12466,
title = {Specification for the Siril HEALpixel Catalog Format},
author = {Adrian J. E. Knagg-Baugh and Ian Cass and Cécile Melis and Cyril Richard},
journal= {arXiv preprint arXiv:2501.12466},
year = {2025}
}