def compare_file(self, hor_file, obj):
hor = read_horizons(hor_file)
for i, date in enumerate(hor['date']):
t = dataclasses.make_I3Time(date)
if obj == 'sun':
d = astro.I3GetSunDirection(t)
elif obj == 'moon':
d = astro.I3GetMoonDirection(t)
el = 90 - math.degrees(d.zenith)
az = (90 -
math.degrees(d.azimuth + astro.ICECUBE_LONGITUDE)) % 360.
eq = astro.I3GetEquatorialFromDirection(d, t)
ra = math.degrees(eq.ra)
dec = math.degrees(eq.dec)
gal = astro.I3GetGalacticFromEquatorial(eq)
l = math.degrees(gal.l)
b = math.degrees(gal.b)
#print el - hor['el'][i], az - hor['az'][i], ra - hor['ra'][i], dec - hor['dec'][i],l - hor['l'][i],b -hor['b'][i]
assert (abs(el - hor['el'][i]) < 0.003)
assert (azimuth_distance(az, hor['az'][i]) < 1.0)
assert (abs(ra - hor['ra'][i]) < 0.005)
assert (abs(dec - hor['dec'][i]) < 0.004)
assert (abs(l - hor['l'][i]) < 0.02)
assert (abs(b - hor['b'][i]) < 0.01)
def test_eqn_of_time(self):
for n in range(3000):
i3time = dataclasses.make_I3Time(
datetime(2010, 1, 1, 12) + timedelta(n))
sun = astro.I3GetSunDirection(i3time)
deltat = -(90 -
sun.azimuth / I3Units.degree) * 4 #convert to minutes
assert (abs(deltat - equation_of_time(n)) < 0.3)
def calculate_background_pdf(frame):
# print("Computing PDF")
time = frame.Get("I3EventHeader").start_time
t_y = int(str(time)[0:4])
sun_direction = astro.I3GetSunDirection(time)
sun_zenith = sun_direction.zenith
sun_azimuth = sun_direction.zenith
reco_neutrino = frame.Get("IC86_Dunkman_L6_PegLeg_MultiNest8D_NumuCC")
reco_zenith = reco_neutrino.dir.zenith
reco_energy = reco_neutrino.energy
#if year >= 2015:
if t_y >= 2015:
reco_energy *= 1.04
counter = 0
for pair in energy_range_list:
if reco_energy >= pair[0] and reco_energy <= pair[1]:
for j in xrange(0, 30):
random_azimuth = gRandom.Uniform(0, 2 * pi)
solar_angle = calculate_angle(reco_zenith, random_azimuth,
sun_zenith,
sun_azimuth) * 180 / pi
bg_hist_list[counter].Fill(solar_angle)
counter += 1
time.set_mod_julian_time_double(56819.20444852863)
#calculate the position of the moon
moon_direction = astro.I3GetMoonDirection(time)
print(
"At {} the moon will be at zenith={:8.4f} deg, azimuth={:7.4f} deg".format(
str(time),
moon_direction.zenith / I3Units.degree,
moon_direction.azimuth / I3Units.degree,
))
print
#calculate the position of the sun
sun_direction = astro.I3GetSunDirection(time)
print(
"At {} the Sun will be at zenith={:8.4f} deg, azimuth={:7.4f} deg".format(
str(time),
sun_direction.zenith / I3Units.degree,
sun_direction.azimuth / I3Units.degree,
))
print
#This is where the crab lives on the sky
crab_position = astro.I3Equatorial(83.63308 * I3Units.degree,
22.01450 * I3Units.degree)
print(
"The Crab Nebula is located at RA = {:8.4f} deg, Dec ={:+7.4f} deg (J2000)"
.format(
from matplotlib.ticker import FormatStrFormatter
from icecube.icetray import I3Units
from icecube import astro,dataclasses
days = range(367)
sun_azimuth =[]
sun_elevation = []
day = []
for n in days:
d = datetime(2000,1,1,12)+timedelta(n-1)
day.append(d)
i3time = dataclasses.make_I3Time(d)
sun = astro.I3GetSunDirection(i3time)
sun_azimuth.append(90 - sun.azimuth/I3Units.degree)
sun_elevation.append(90 - sun.zenith/I3Units.degree)
plt.plot_date(day,
-4*plt.array(sun_azimuth)*plt.cos(plt.radians(sun_elevation)),
ls='-',marker=None
)
plt.title("Equation of Time")
plt.ylabel("Sundial Faster [minutes]")
plt.figure()
plt.plot_date(day,sun_elevation,ls='-',marker=None)
plt.ylabel("Sun Elevation")
plt.title("Sun Elevation")
from matplotlib.ticker import MultipleLocator, FormatStrFormatter
from matplotlib.dates import WeekdayLocator, SU, DateFormatter, HourLocator
from datetime import datetime, timedelta
from icecube.icetray import I3Units
from icecube import dataclasses, astro
i3time = dataclasses.I3Time()
i3time.set_utc_cal_date(2017, 9, 22, 0, 0, 0, 0.0) # atumnal equinox
dstr = i3time.get_utc_string("%d %B %Y")
i3_sun_zenith = []
i3_sun_azimuth = []
times = []
N = 10000
for n in range(N + 1):
sun_dir = astro.I3GetSunDirection(i3time)
i3_sun_zenith.append(sun_dir.zenith / I3Units.degree)
i3_sun_azimuth.append(sun_dir.azimuth / I3Units.degree)
times.append(i3time.date_time)
i3time += I3Units.day / N
fig, (ax1, ax2) = plt.subplots(2, sharex=True)
ax1.set_title("IceCube Coordinates for the Sun " + dstr)
ax1.plot_date(times, i3_sun_zenith, marker=None, ls='-', label="I3")
ax1.yaxis.set_major_locator(MultipleLocator(0.1))
ax1.yaxis.set_major_formatter(FormatStrFormatter(u'%4.1f\u00b0'))
ax1.set_ylabel("Zenith")
ax1.set_ylim(min(i3_sun_zenith), max(i3_sun_zenith))
ax2.plot_date(times, i3_sun_azimuth, marker=None, ls='-', label="I3")
ax2.set_ylabel("Azimuth")