AstrometricSolution

class astropop.astrometry.AstrometricSolution(header, correspondences=None)

Bases: object

Store astrometric solution.

Parameters:

header: `~astropy.io.fits.Header` (optional)

Astrometric solved fits header. WCS will be extrated from it.

correspondences: `~astropy.table.Table` (optional)

A table containing the matched correspondences between the (x, y) positions and the matched (ra, dec) catalog coordinates.

Attributes Summary

correspondences	Correspondece Table between image stars and astrometry.net index objects.
header	Header containing the astrometric solution.
wcs	World Coordinate System WCS solution.

Attributes Documentation

correspondences

Correspondece Table between image stars and astrometry.net index objects.

This property is not so smart. It just returns a copy of the table passed as input. If this is an astrometry.net correspondences table, it will have the following columns:

• field_x and field_y

  Image coordinates of each star in the solved image.

• index_x and index_y

  X and Y coordinates of matched stars in the index file used to solve the image.

• field_ra and field_dec

  Physical RA and DEC solved coordinates of each star in the image.

• index_ra and index_dec

  Physical RA and DEC of the matched star in the index file used to solve the image.

header

Header containing the astrometric solution.

wcs

World Coordinate System WCS solution.