usnognc

This module provides a class for interfacing with the USNO GNC (Guidance Navigation and Control) star catalog.

The GNC catalog provides high-precision astrometric data based on GAIA DR3, Hipparcos, and USNO’s bright star catalog for navigation applications.

Classes

USNOGNC

This class provides an interface to the USNO GNC (Guidance, Navigation, and Control) star catalog.

Methods

query_catalog

Query the GNC catalog for stars within a specified region and magnitude range.

Functions

download_gnc

Download the USNO GNC catalog from the official source.