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HTML ファイル生成日時: 2024/11/24 14:07:03.493 (台灣標準時)
astroplan を使って、月齢を調べるには以下のようにすればよいようでござる。
#!/usr/pkg/bin/python3.9 # # Time-stamp: <2022/07/03 11:58:44 (CST) daisuke> # # importing argparse module import argparse # importing numpy module import numpy # importing astropy module import astropy.units import astropy.time import astropy.coordinates # importing astroplan module import astroplan # units unit_m = astropy.units.m unit_rad = astropy.units.rad unit_deg = astropy.units.deg # constructing parser object desc = "finding moonrise/moonset time" parser = argparse.ArgumentParser (description=desc) # adding arguments parser.add_argument ('-l', '--longitude', default='+121d11m12s', \ help='longitude of observing site in format "+121d11m12s"') parser.add_argument ('-b', '--latitude', default='+24d58m12s', \ help='latitude of observing site in format "+24d58m12s"') parser.add_argument ('-a', '--altitude', type=float, default=151.6, \ help='altitude above sea-level in metre') parser.add_argument ('-t', '--datetime', default='2000-01-01T12:00:00.000', \ help='date/time in UT in "YYYY-MM-DDThh:mm:ss.sss" format') # command-line argument analysis args = parser.parse_args () # input parameters site_lon = args.longitude site_lat = args.latitude site_alt = args.altitude * unit_m datetime_str = args.datetime # printing input parameters print ("#") print ("# input parameters") print ("#") print ("# Location:") print ("# longitude =", site_lon) print ("# latitude =", site_lat) print ("# altitude =", site_alt) print ("# Date/Time:") print ("# date/time (UT) =", datetime_str) print ("#") # location object location = astropy.coordinates.EarthLocation.from_geodetic \ (site_lon, site_lat, site_alt) # observer object observer = astroplan.Observer (location=location, name="observer", \ timezone="UTC") # time object datetime = astropy.time.Time (datetime_str, scale='utc') # illumination illumination = observer.moon_illumination (datetime) # moon phase phase = observer.moon_phase (datetime) print ("Moon on %s" % datetime) print (" illumination = %f" % illumination) print (" moon phase = %s = %s" \ % (phase, phase / numpy.pi * 180.0 / unit_rad * unit_deg) )
実行してみると、以下のようになるでござる。
% ./astroplan_sample_11.py -h usage: astroplan_sample_11.py [-h] [-l LONGITUDE] [-b LATITUDE] [-a ALTITUDE] [-t DATETIME] finding moonrise/moonset time optional arguments: -h, --help show this help message and exit -l LONGITUDE, --longitude LONGITUDE longitude of observing site in format "+121d11m12s" -b LATITUDE, --latitude LATITUDE latitude of observing site in format "+24d58m12s" -a ALTITUDE, --altitude ALTITUDE altitude above sea-level in metre -t DATETIME, --datetime DATETIME date/time in UT in "YYYY-MM-DDThh:mm:ss.sss" format % ./astroplan_sample_11.py -t 2022-06-29T16:00:00 # # input parameters # # Location: # longitude = +121d11m12s # latitude = +24d58m12s # altitude = 151.6 m # Date/Time: # date/time (UT) = 2022-06-29T16:00:00 # Moon on 2022-06-29T16:00:00.000 illumination = 0.003958 moon phase = 3.015691855831205 rad = 172.78641565110277 deg % ./astroplan_sample_11.py -t 2022-07-03T16:00:00 # # input parameters # # Location: # longitude = +121d11m12s # latitude = +24d58m12s # altitude = 151.6 m # Date/Time: # date/time (UT) = 2022-07-03T16:00:00 # Moon on 2022-07-03T16:00:00.000 illumination = 0.180964 moon phase = 2.262788807999506 rad = 129.64824862781006 deg % ./astroplan_sample_11.py -t 2022-07-13T16:00:00 # # input parameters # # Location: # longitude = +121d11m12s # latitude = +24d58m12s # altitude = 151.6 m # Date/Time: # date/time (UT) = 2022-07-13T16:00:00 # Moon on 2022-07-13T16:00:00.000 illumination = 0.998382 moon phase = 0.08048014233055935 rad = 4.611172490153212 deg