Delete zodiacal.py

csst_mci_sim/zodiacal.py

-import numpy as np
-import julian
-from datetime import datetime
-from astropy.time import Time
-from astropy.coordinates import get_sun
-from astropy.coordinates import SkyCoord
-import pandas as pd
-from astropy import units as u
-
-from scipy import interpolate
-
-def zodiacal(ra, dec, time, path):
-    """
-        For given RA, DEC and TIME, return the interpolated zodical spectrum in Leinert-1998.
-
-    :param ra: RA in unit of degree, ICRS frame
-    :param dec: DEC in unit of degree, ICRS frame
-    :param time: the specified string that in ISO format i.e., yyyy-mm-dd.
-    :param path: the relative file path
-    :return:
-        wave_A: wavelength of the zodical spectrum
-        
-        spec_erg: flux of the zodical spectrum, in unit of erg/s/cm^2/A/sr
-
-    """
-
-    # get solar position
-    dt = datetime.fromisoformat(time)
-    jd = julian.to_jd(dt, fmt='jd')
-    
-    ###jd = time2jd(dt)
-    t = Time(jd, format='jd', scale='utc')
-
-    astro_sun = get_sun(t)
-    ra_sun, dec_sun = astro_sun.gcrs.ra.deg, astro_sun.gcrs.dec.deg
-
-    radec_sun = SkyCoord(ra=ra_sun*u.degree, dec=dec_sun*u.degree, frame='gcrs')
-    lb_sun = radec_sun.transform_to('geocentrictrueecliptic')
-
-    # get offsets between the target and sun.
-    radec_obj = SkyCoord(ra=ra*u.degree, dec=dec*u.degree, frame='icrs')
-    lb_obj = radec_obj.transform_to('geocentrictrueecliptic')
-
-    beta = abs(lb_obj.lat.degree)
-    lamda = abs(lb_obj.lon.degree - lb_sun.lon.degree)
-
-    # interpolated zodical surface brightness at 0.5 um
-    zodi = pd.read_csv(path+'MCI_inputData/refs/zodi_map.dat', sep='\s+', header=None, comment='#')
-    beta_angle = np.array([0, 5, 10, 15, 20, 25, 30, 45, 60, 75])
-    lamda_angle = np.array([0, 5, 10, 15, 20, 25, 30, 35, 40, 45,
-                          60, 75, 90, 105, 120, 135, 150, 165, 180])
-    xx, yy = np.meshgrid(beta_angle, lamda_angle)
-    f = interpolate.interp2d(xx, yy, zodi, kind='linear')
-    zodi_obj = f(beta, lamda)       # 10^�? W m�? sr�? um�?
-
-    # read the zodical spectrum in the ecliptic
-    cat_spec = pd.read_csv(path+'MCI_inputData/refs/solar_spec.dat', sep='\s+', header=None, comment='#')
-    wave = cat_spec[0].values       # A
-    spec0 = cat_spec[1].values      # 10^-8 W m^�? sr^�? μm^�?
-    zodi_norm = 252                 # 10^-8 W m^�? sr^�? μm^�?
-
-    spec = spec0 * (zodi_obj / zodi_norm) * 1e-8  # W m^�? sr^�? μm^�?
-
-    # convert to the commonly used unit of MJy/sr, erg/s/cm^2/A/sr
-    wave_A = wave                                               # A
-    #spec_mjy = spec * 0.1 * wave_A**2 / 3e18 * 1e23 * 1e-6      # MJy/sr
-    spec_erg = spec * 0.1                                       # erg/s/cm^2/A/sr
-    spec_erg2 = spec_erg / 4.25452e10                           # erg/s/cm^2/A/arcsec^2
-    
-    return wave_A, spec_erg2
-
-
-###############################
-# path='/home/yan/MCI/'
-# wave0, zodi0=zodiacal(10.0, 20.0, '2024-04-04', path)