Compute the ICRS Right Ascension (ra) and Declination (dec) coordinates for the entire Galactic Plane.

compute-galactic-plane-coordinates.py

"""Compute ra and dec for the Galactic Plane.

This script computes the ICRS Right Ascension (ra) and Declination (dec)
coordinates for the entire Galactic Plane and writes them to a csv file.
"""
import numpy as np
import pandas as pd
from astropy.coordinates import SkyCoord

galactic_longitudes = np.arange(start=0, stop=360, step=0.1)
galactic_latitudes = [0] * len(galactic_longitudes)
icrs = SkyCoord(galactic_longitudes, galactic_latitudes,
                unit="deg", frame="galactic").icrs
df = pd.DataFrame({'glon': galactic_longitudes,
                   'glat': galactic_latitudes,
                   'ra': icrs.ra,
                   'dec': icrs.dec})
df[['glon', 'glat', 'ra', 'dec']].to_csv('galactic-plane-coordinates-icrs.csv',
                                         index=False, float_format='%.14f')

galactic-plane-coordinates-icrs.csv