Пример #1
0
    def test_slalib_hip_fk52appradec(self):
        """convert(x, s1=6, s2=11) + PM => SLALIB sla_map HIP."""
        tab = get_sla("slalib_hip_map.txt")

        v6l = []
        for r, d, pa, pd, px in zip(self.hip_tab['raj2'],
                                    self.hip_tab['decj2'], self.hip_tab['pma'],
                                    self.hip_tab['pmd'], self.hip_tab['px']):
            r = tpm.d2r(r)
            d = tpm.d2r(d)
            # Milli-arcsec / Jul. yr to arcsec per Jul. century.
            pma = pa / math.cos(d) / 1000.0 * 100.0
            pmd = pd / 1000.0 * 100.0
            px /= 1000.0  # mili-arcsec to arc-sec.
            v6 = tpm.cat2v6(r, d, pma, pmd, px, 0.0, tpm.CJ)
            v6l.append(v6)

        utc = tpm.gcal2j(2010, 1, 1) - 0.5  # midnight
        tt = tpm.utc2tdb(utc)

        v6o = convert.proper_motion(v6l, tt, tpm.J2000)
        v6o = convert.convertv6(v6o,
                                s1=6,
                                s2=11,
                                epoch=tt,
                                equinox=tpm.J2000,
                                utc=utc,
                                delta_at=tpm.delta_AT(utc))

        cat = (tpm.v62cat(v, tpm.CJ) for v in v6o)

        l = len(v6o)

        for v, s, i in zip(cat, tab, range(l)):
            ra = math.degrees(tpm.r2r(v['alpha']))
            dec = math.degrees(v['delta'])

            ra_diff = abs(ra - s[0]) * 3600.0
            dec_diff = abs(dec - s[1]) * 3600.0
            self.assertTrue(ra_diff <= 0.33)
            self.assertTrue(dec_diff <= 0.03)
Пример #2
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    def test_slalib_hip_fk52appradec(self):
        """convert(x, s1=6, s2=11) + PM => SLALIB sla_map HIP."""
        tab = get_sla("slalib_hip_map.txt")

        v6l = []
        for r, d, pa, pd, px in zip(self.hip_tab['raj2'],
                                    self.hip_tab['decj2'],
                                    self.hip_tab['pma'],
                                    self.hip_tab['pmd'],
                                    self.hip_tab['px']):
            r = tpm.d2r(r)
            d = tpm.d2r(d)
            # Milli-arcsec / Jul. yr to arcsec per Jul. century.
            pma = pa / math.cos(d) / 1000.0 * 100.0
            pmd = pd / 1000.0 * 100.0
            px /= 1000.0  # mili-arcsec to arc-sec.
            v6 = tpm.cat2v6(r, d, pma, pmd, px, 0.0, tpm.CJ)
            v6l.append(v6)

        utc = tpm.gcal2j(2010, 1, 1) - 0.5  # midnight
        tt = tpm.utc2tdb(utc)

        v6o = convert.proper_motion(v6l, tt, tpm.J2000)
        v6o = convert.convertv6(v6o, s1=6, s2=11, epoch=tt,
                                equinox=tpm.J2000,
                                utc=utc, delta_at=tpm.delta_AT(utc))

        cat = (tpm.v62cat(v, tpm.CJ) for v in v6o)

        l = len(v6o)

        for v, s, i in zip(cat, tab, range(l)):
            ra = math.degrees(tpm.r2r(v['alpha']))
            dec = math.degrees(v['delta'])

            ra_diff = abs(ra - s[0]) * 3600.0
            dec_diff = abs(dec - s[1]) * 3600.0
            self.assertTrue(ra_diff <= 0.33)
            self.assertTrue(dec_diff <= 0.03)
Пример #3
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 def verify(t, t_norm):
     g = tpm.gcal2j(**t)
     self.assertAlmostEqual(g, t_norm)
Пример #4
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 def verify(t, t_norm):
     g = tpm.gcal2j(**t)
     self.assertAlmostEqual(g, t_norm)
Пример #5
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# I want to run these without having to install PyTPM.
sys.path.append("..")
from pytpm import tpm, convert

# Load HIPPAROCS data and output from running SLALIB map.
hip_tab = get_hipdata()
tab = np.loadtxt(os.path.join(testdatadir, "slalib_hip_map.txt"))
rv = np.zeros_like(hip_tab['px'])

# Create V6C array from catalog data.
v6l = convert.cat2v6(hip_tab['raj2'], hip_tab['decj2'], hip_tab['pma'],
                     hip_tab['pmd'], hip_tab['px'], rv, tpm.CJ)

# UTC and TDB for mid-night of 2010/1/1.
utc = tpm.gcal2j(2010, 1, 1) - 0.5  # midnight
tt = tpm.utc2tdb(utc)

# Apply proper motion from J2000 to date.
v6o = convert.proper_motion(v6l, tt, tpm.J2000)

# Convert from mean equinox J2000 to true equinox and epoch of date.
v6o = convert.convertv6(v6o, s1=6, s2=11, utc=utc)

# Convert to Numpy rec-array.
cat = convert.v62cat(v6o, tpm.CJ)
cat = cat2array(cat)

ra_diff = np.degrees(cat['alpha']) - tab[:, 0]
ra_diff = np.abs(ra_diff) * 3600.0
dec_diff = np.degrees(cat['delta']) - tab[:, 1]
Пример #6
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# Normalize "alpha" angles to 0 - 360.0
az_sla = np.array([i if i >= 0 else i + 360.0 for i in tab[:, 0]])
zd_sla = tab[:, 1]
ha_sla = np.array([i if i >= 0 else i + 360.0 for i in tab[:, 2]])
dec_sla = tab[:, 3]
ra_sla = np.array([i if i >= 0 else i + 360.0 for i in tab[:, 4]])

# Dummy radial velocity.
rv = np.zeros_like(hip_tab['px'])

# Create array of TPM V6C vectors.
v6l = convert.cat2v6(hip_tab['raj2'], hip_tab['decj2'], hip_tab['pma'],
                     hip_tab['pmd'], hip_tab['px'], rv, tpm.CJ)

# Time for the observations.
utc = tpm.gcal2j(2010, 1, 1) - 0.5  # midnight
tt = tpm.utc2tdb(utc)

# Convert J2000 RA, DEC to Az, EL and ZD at given UTC.
v6o = convert.proper_motion(v6l, tt, tpm.J2000)
v619 = convert.convertv6(v6o, s1=6, s2=19, utc=utc)
cat19 = convert.v62cat(v619, tpm.CJ)
cat19 = cat2array(cat19)

az = np.degrees(cat19['alpha'])
el = np.degrees(cat19['delta'])
zd = 90.0 - el
# Keep only those objects with ZD < 75.0 degrees.
indx = np.where(zd < 75.0)

# Difference in AZ and ZD, using TPM and SLALIB.
Пример #7
0
    def test_slalib_hip_fk52obs(self):
        """convert(x, s1=6, s2=19) (+ s2=20) + PM => SLALIB sla_aop HIP."""
        tab = get_sla("slalib_hip_aop.txt")
        az_sla = []
        zd_sla = []
        ha_sla = []
        dec_sla = []
        ra_sla = []
        for i in tab:
            # Convert longitude values to 0 - 360
            az_sla.append(i[0] if i[0] >= 0 else i[0] + 360.0)
            zd_sla.append(i[1])
            ha_sla.append(i[2] if i[2] >= 0 else i[2] + 360.0)
            dec_sla.append(i[3])
            ra_sla.append(i[4] if i[4] >= 0 else i[4] + 360.0)

        v6l = []
        for r, d, pa, pd, px in zip(self.hip_tab['raj2'],
                                    self.hip_tab['decj2'], self.hip_tab['pma'],
                                    self.hip_tab['pmd'], self.hip_tab['px']):
            r = tpm.d2r(r)
            d = tpm.d2r(d)
            # Milli-arcsec / Jul. yr to arcsec per Jul. century.
            pma = pa / math.cos(d) / 1000.0 * 100.0
            pmd = pd / 1000.0 * 100.0
            px /= 1000.0  # mili-arcsec to arc-sec.
            v6 = tpm.cat2v6(r, d, pma, pmd, px, 0.0, tpm.CJ)
            v6l.append(v6)

        utc = tpm.gcal2j(2010, 1, 1) - 0.5  # midnight
        tt = tpm.utc2tdb(utc)

        # Convert to Az-EL.
        v6o = convert.proper_motion(v6l, tt, tpm.J2000)
        v6o = convert.convertv6(v6o, s1=6, s2=19, utc=utc)

        cat = (tpm.v62cat(v, tpm.CJ) for v in v6o)

        az = []
        zd = []
        for i in cat:
            az.append(tpm.r2d(i['alpha']))
            zd.append(90.0 - tpm.r2d(i['delta']))

        # Convert Az-El to HA-Dec.
        v6o = convert.convertv6(v6o, s1=19, s2=20, utc=utc)

        cat = (tpm.v62cat(v, tpm.CJ) for v in v6o)

        # Find LAST.
        tstate = tpm.TSTATE()
        tpm.tpm_data(tstate, tpm.TPM_INIT)
        tstate.utc = utc
        tstate.delta_ut = tpm.delta_UT(utc)
        tstate.delta_at = tpm.delta_AT(utc)
        tstate.lon = tpm.d2r(-111.598333)
        tstate.lat = tpm.d2r(31.956389)
        tpm.tpm_data(tstate, tpm.TPM_ALL)
        last = tpm.r2d(tstate.last)

        ha = []
        dec = []
        ra = []
        for i in cat:
            ha.append(tpm.r2d(i['alpha']))
            dec.append(tpm.r2d(i['delta']))
            # RA = LAST - HA and convert to 0 - 360.
            x = last - tpm.r2d(i['alpha'])
            ra.append(x if x >= 0 else x + 360.0)

        for i in range(len(az)):
            # Test only the coordinates with ZD < 75.0.
            if zd[i] < 75.0:
                self.assertTrue(abs(az[i] - az_sla[i]) * 3600.0 <= 0.25)
                self.assertTrue(abs(zd[i] - zd_sla[i]) * 3600.0 <= 0.04)
                self.assertTrue(abs(ha[i] - ha_sla[i]) * 3600.0 <= 0.28)
                self.assertTrue(abs(dec[i] - dec_sla[i]) * 3600.0 <= 0.04)
                self.assertTrue(abs(ra[i] - ra_sla[i]) * 3600.0 <= 0.33)
Пример #8
0
    def test_slalib_hip_fk52obs(self):
        """convert(x, s1=6, s2=19) (+ s2=20) + PM => SLALIB sla_aop HIP."""
        tab = get_sla("slalib_hip_aop.txt")
        az_sla = []
        zd_sla = []
        ha_sla = []
        dec_sla = []
        ra_sla = []
        for i in tab:
            # Convert longitude values to 0 - 360
            az_sla.append(i[0] if i[0] >= 0 else i[0] + 360.0)
            zd_sla.append(i[1])
            ha_sla.append(i[2] if i[2] >= 0 else i[2] + 360.0)
            dec_sla.append(i[3])
            ra_sla.append(i[4] if i[4] >= 0 else i[4] + 360.0)

        v6l = []
        for r, d, pa, pd, px in zip(self.hip_tab['raj2'],
                                    self.hip_tab['decj2'],
                                    self.hip_tab['pma'],
                                    self.hip_tab['pmd'],
                                    self.hip_tab['px']):
            r = tpm.d2r(r)
            d = tpm.d2r(d)
            # Milli-arcsec / Jul. yr to arcsec per Jul. century.
            pma = pa / math.cos(d) / 1000.0 * 100.0
            pmd = pd / 1000.0 * 100.0
            px /= 1000.0  # mili-arcsec to arc-sec.
            v6 = tpm.cat2v6(r, d, pma, pmd, px, 0.0, tpm.CJ)
            v6l.append(v6)

        utc = tpm.gcal2j(2010, 1, 1) - 0.5  # midnight
        tt = tpm.utc2tdb(utc)

        # Convert to Az-EL.
        v6o = convert.proper_motion(v6l, tt, tpm.J2000)
        v6o = convert.convertv6(v6o, s1=6, s2=19, utc=utc)

        cat = (tpm.v62cat(v, tpm.CJ) for v in v6o)

        az = []
        zd = []
        for i in cat:
            az.append(tpm.r2d(i['alpha']))
            zd.append(90.0 - tpm.r2d(i['delta']))

        # Convert Az-El to HA-Dec.
        v6o = convert.convertv6(v6o, s1=19, s2=20, utc=utc)

        cat = (tpm.v62cat(v, tpm.CJ) for v in v6o)

        # Find LAST.
        tstate = tpm.TSTATE()
        tpm.tpm_data(tstate, tpm.TPM_INIT)
        tstate.utc = utc
        tstate.delta_ut = tpm.delta_UT(utc)
        tstate.delta_at = tpm.delta_AT(utc)
        tstate.lon = tpm.d2r(-111.598333)
        tstate.lat = tpm.d2r(31.956389)
        tpm.tpm_data(tstate, tpm.TPM_ALL)
        last = tpm.r2d(tstate.last)

        ha = []
        dec = []
        ra = []
        for i in cat:
            ha.append(tpm.r2d(i['alpha']))
            dec.append(tpm.r2d(i['delta']))
            # RA = LAST - HA and convert to 0 - 360.
            x = last - tpm.r2d(i['alpha'])
            ra.append(x if x >= 0  else x + 360.0)

        for i in range(len(az)):
            # Test only the coordinates with ZD < 75.0.
            if zd[i] < 75.0:
                self.assertTrue(abs(az[i] - az_sla[i]) * 3600.0 <= 0.25)
                self.assertTrue(abs(zd[i] - zd_sla[i]) * 3600.0 <= 0.04)
                self.assertTrue(abs(ha[i] - ha_sla[i]) * 3600.0 <= 0.28)
                self.assertTrue(abs(dec[i] - dec_sla[i]) * 3600.0 <= 0.04)
                self.assertTrue(abs(ra[i] - ra_sla[i]) * 3600.0 <= 0.33)