USNOGNC.query_catalog

giant.catalogs.usnognc:

USNOGNC.query_catalog(ids=None, min_ra=0, max_ra=360, min_dec=-90, max_dec=90, min_mag=-4, max_mag=20, search_center=None, search_radius=None, new_epoch=None)[source]

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

Parameters:

  • ra – Right ascension of search center in degrees

  • dec – Declination of search center in degrees

  • radius – Search radius in degrees

  • max_mag (float) – Maximum magnitude (faintest stars)

  • min_mag (float) – Minimum magnitude (brightest stars)

  • epoch – Target epoch for coordinates (default 2000.0)

  • ids (Iterable[tuple[int, int]] | None)

  • min_ra (float)

  • max_ra (float)

  • min_dec (float)

  • max_dec (float)

  • search_center (Sequence[float] | ndarray[tuple[Any, ...], dtype[float64]] | None)

  • search_radius (float | None)

  • new_epoch (datetime | float | None)

Returns:

DataFrame with star data in GIANT format

Return type:

DataFrame